English Articles

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Another good tip for successful web experience..injoy it!



Choosing A Good Domain Name


Choosing a domain name for your site is one of the most important steps towards creating the perfect internet presence. If you run an on-line business, picking a name that will be marketable and achieve success in search engine placement is paramount. Many factors must be considered when choosing a good domain name. This article summarizes all the different things to consider before making that final registration step!


Short and Sweet

Domain names can be really long or really short (1 - 67 characters). In general, it is far better to choose a domain name that is short in length. The shorter your domain name, the easier it will be for people remember. Remembering a domain name is very important from a marketability perspective. As visitors reach your site and enjoy using it, they will likely tell people about it. And those people may tell others, etc. As with any business, word of mouth is the most powerful marketing tool to drive traffic to your site (and it's free too!). If your site is long and difficult to pronounce, people will not remember the name of the site and unless they bookmark the link, they may never return.


Consider Alternatives

Unless a visitor reaches your site through a bookmark or a link from another site, they have typed in your domain name. Most people on the internet are terrible typists and misspell words constantly. If your domain name is easy to misspell, you should think about alternate domain names to purchase. For example, if your site will be called "MikesTools.com", you should also consider buying "MikeTools.com" and "MikeTool.com". You should also secure the different top level domain names besides the one you will use for marketing purposes ("MikesTools.net", "MikesTools.org", etc.) You should also check to see if there are existing sites based on the misspelled version of the domain name you are considering. "MikesTools.com" may be available, but "MikesTool.com" may be home to a graphic pornography site. You would hate for a visitor to walk away thinking you were hosting something they did not expect.

Also consider domain names that may not include the name of your company, but rather what your company provides. For example, if the name of your company is Mike's Tools, you may want to consider domain names that target what you sell. For example: "buyhammers.com" or "hammer-and-nail.com". Even though these example alternative domain names do not include the name of your company, it provides an avenue for visitors from your target markets. Remember that you can own multiple domain names, all of which can point to a single domain. For example, you could register "buyhammers.com", "hammer-and-nail.com", and "mikestools.com" and have "buyhammers.com" and "hammer-and-nail.com" point to "mikestools.com".


Hyphens: Your Friend and Enemy

Domain name availability has become more and more scant over the years. Many single word domain names have been scooped up which it makes it more and more difficult to find a domain name that you like and is available. When selecting a domain name, you have the option of including hyphens as part of the name. Hyphens help because it allows you to clearly separate multiple words in a domain name, making it less likely that a person will accidentally misspell the name. For example, people are more likely to misspell "domainnamecenter.com" than they are "domain-name-center.com". Having words crunched together makes it hard on the eyes, increasing the likelihood of a misspelling. On the other hand, hyphens make your domain name longer. The longer the domain name, the easier it is for people to forget it altogether. Also, if someone recommends a site to someone else, they may forget to mention that each word in the domain name is separated by a hyphen. If do you choose to leverage hyphens, limit the number of words between the hyphens to three. Another advantage to using hyphens is that search engines are able to pick up each unique word in the domain name as key words, thus helping to make your site more visible in search engine results.


Dot What?

There are many top level domain names available today including .com, .net, .org, and .biz. In most cases, the more unusual the top level domain, the more available domain names are available. However, the .com top level domain is far and away the most commonly used domain on the internet, driven by the fact that it was the first domain extension put to use commercially and has received incredible media attention. If you cannot lay your hands on a .com domain name, look for a .net domain name, which is the second most commercially popular domain name extension.


Long Arm of the Law

Be very careful not to register domain names that include trademarked names. Although internet domain name law disputes are tricky and have few cases in existence, the risk of a legal battle is not a risk worth taking. Even if you believe your domain name is untouchable by a business that has trademarked a name, do not take the chance: the cost of litigation is extremely high and unless you have deep pockets you will not likely have the resources to defend yourself in a court of law. Even stay away from domain names in which part of the name is trademarked: the risks are the same.


Search Engines and Directories

All search engines and directories are different. Each has a unique process for being part of the results or directory listing and each has a different way of sorting and listing domain names. Search engines and directories are the most important on-line marketing channel, so consider how your domain name choice affects site placement before you register the domain. Most directories simply list links to home pages in alphabetical order. If possible, choose a domain name with a letter of the alphabet near the beginning ("a" or "b"). For example, "aardvark-pest-control.com" will come way above "joes-pest-control.com". However, check the directories before you choose a domain name. You may find that the directories you would like be in are already cluttered with domain names beginning with the letter "a". Search engines scan websites and sort results based on key words. Key words are words that a person visiting a search engine actually search on. Having key words as part of your domain name can help you get better results.

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I hope this insight wii provide a good use for those who want to do business on the web..



Choosing An Internet Merchant Account


Surf to Google and perform a search on "Internet Merchant Account". The results are staggering (472,000 results!) If you have created a web based business and need to accept credit card payments, your choices are limitless. Before you partner with a provider, take time to understand the different components of internet credit card processing, and know what to look for in a merchant provider.


How It Works

Accepting credit card payments through your web site actually requires multiple components. Between a paying customer and your bank account, three layers exist:

Payment Gateway - This is the code that will transmit a customer's order to and from an internet merchant account provider. The payment gateway provides you the ability to accept customer billing information (credit card number, credit card type, expiration date, and payment amount) and the necessary validation steps that must be followed before the credit card is actually billed.

Internet Merchant Account - A Merchant Account is an account with a financial institution or bank, which enables you to accept credit card payments from your clients. The payment gateway actually transmits the billing information to the internet merchant account provider. Unfortunately, most local banks do not provide internet merchant account capability.

The main reason why most local financial institutions or banks do not want to provide online merchant accounts is because transactions conducted over the Internet are totally different from face to face transactions where a signature is required to authorize the purchase. This makes online transactions prone to credit card fraud. Fraud protection should be one of your primary considerations when choosing an internet merchant account provider.

Web Site - Regardless of which merchant provider and gateway service you choose, your web site will need to integrate with your service providers. Most providers include detailed web integration instructions.


How Much Does It Cost ?

Understanding the total costs of your merchant provider can be tricky. Remember my Google example - there are more merchant account providers than there are people looking for internet merchant accounts so ask questions and be picky! Typically, an internet merchant account will have three types of costs:

- Up Front Application Fees
- On Going Fixed Fee
- Discount Rate
- Fixed Transaction Fee
- Termination Fees
- Miscellaneous Fees

Let us discuss each type of cost:

* Up Front Application Fees

Many internet merchant accounts will require an up front application fee. This fee, supposedly, is to cover their costs for processing your application. In case you choose not to open an internet merchant account, they still cover their initial costs. Although common, many providers waive these fees and I recommend that you choose a provider that does not require an up front fee.

* On Going Fixed Fee

Most all internet merchant providers require a monthly fixed fee or "statement fee" as it is commonly named, which is simply another way to cover their costs and make money. You will be hard pressed to find a provider that does not require this type of fee on a monthly basis. However, do not choose an internet merchant account that requires more than $10 per month. Additionally, most internet merchant providers require a monthly minimum (usually $25). The bottom line is that you will be paying at least $25 per month (on top of the monthly statement fee) for your account.

* Discount Rate

Usually, the discount rate will be between 2 and 4 percent. The discount rate is the sales commission the provider earns on each sale. For example, if the discount rate offered is 3%, and you receive a sale over your web site for $20, you will owe 60 cents to your internet merchant provider.

* Fixed Transaction Fee

Usually between $0.20 and $0.30, the fixed transaction fee is the fixed fee portion of each sale. Unlike the discount rate, the fixed transaction fee is the same for every transaction. Whether you get a $1 sale or a $100 sale, the transaction fee will be the same.

* Termination Fee

A bit more hidden in the small print, a termination fee can apply if you cancel your merchant account within a specified period of time (usually within one year). But beware, some merchant providers require a three year commitment!

* Miscellaneous Fees

If a customer requests a refund and they want their credit card credited, an internet merchant provider will charge you a separate fee (usually between $10 - $20). Read the contract carefully, as other special fees may apply.


Putting It All Together

Now that the different fees have been explained, let us look at an example set of transactions to help understand what an internet merchant account may cost your business on a monthly basis.

I have created a simple formula to help you calculate your monthly charges:

Total Charges = Statement Fee + Number of Transactions x (Average Sale x Discount Rate + Fixed Transaction Fee) + (Number of Chargebacks x Chargeback Fee)

For example, let us see you sell widgets over the internet. The sales price for each widget is $10. You typically have 100 sales per month and about 5 people request refunds (chargebacks). For this example, let us assume you have signed up with Jones&Jones internet merchant account services and have the following terms:

Discount Rate - %2.5
Statement Fee - $10
Fixed Transaction Fee - $0.30
Chargeback Fee - $15

Using my formula above, your monthly Jones&Jones charges will be:

Total Charges = 10 + 100 x (10 x .025 + 0.3) + (5 x 15) = $140

You can calculate your monthly sales revenue by multiplying your sales volume by your price:

Monthly Sales Revenue = 100 x $10 = $1000

Your internet merchant provider is costing you 14% of your total sales.


Making Your Decision

Before you choose and internet merchant provider, understand all of the cost components. Use your current or projected sales data to forecast what your internet merchant account costs will be. Planning ahead can save you time and money.

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          Closing Open Holes



September 27, 2000
By Ankit Fadia

With the spread of Hackers and Hacking incidents, the time has come, when not only system administrators of servers of big companies, but also people who connect to the Internet by dialing up into their ISP, have to worry about securing their system. It really does not make much difference whether you have a static IP or a dynamic one, if your system is connected to the Internet, then there is every chance of it being attacked.

This manual is aimed at discussing methods of system security analysis and will shed light on as to how to secure your standalone (also a system connected to a LAN) system.

Open Ports: A Threat to Security?

In the Netstat Tutorial we had discussed how the netstat -a command showed the list of open ports on your system. Well, anyhow, before I move on, I would like to quickly recap the important part. So here goes, straight from the netstat tutorial:

Now, the ??a? option is used to display all open connections on the local machine. It also returns the remote system to which we are connected to, the port numbers of the remote system we are connected to (and the local machine) and also the type and state of connection we have with the remote system.

For Example,

C:\windows>netstat -a

Active Connections


 Proto  Local Address          Foreign Address              State
 TCP    ankit:1031            dwarf.box.sk:ftp                      ESTABLISHED
 TCP    ankit:1036            dwarf.box.sk:ftp-data                TIME_WAIT
 TCP    ankit:1043            banners.egroups.com:80    FIN_WAIT_2
 TCP    ankit:1045            mail2.mtnl.net.in:pop3      TIME_WAIT
 TCP    ankit:1052            zztop.boxnetwork.net:80  ESTABLISHED
 TCP    ankit:1053            mail2.mtnl.net.in:pop3      TIME_WAIT
 UDP    ankit:1025            *:*
 UDP    ankit:nbdatagram      *:*


Now, let us take a single line from the above output and see what it stands for:

Proto  Local Address          Foreign Address              State
TCP    ankit:1031                dwarf.box.sk:ftp              ESTABLISHED

Now, the above can be arranged as below:

Protocol: TCP (This can be Transmission Control Protocol or TCP, User Datagram Protocol or UDP or sometimes even, IP or Internet Protocol.)

Local System Name: ankit (This is the name of the local system that you set during the Windows setup.)

Local Port opened and being used by this connection: 1031 

Remote System: dwarf.box.sk (This is the non-numerical form of the system to which we are connected.)

Remote Port: ftp (This is the port number of the remote system dwarf.box.sk to which we are connected.)

State of Connection: ESTABLISHED

?Netstat? with the ??a? argument is normally used, to get a list of open ports on your own system i.e. on the local system. This can be particularly useful to check and see whether your system has a Trojan installed or not. Yes, most good Antiviral software are able to detect the presence of Trojans, but, we are hackers, and need to software to tell us, whether we are infected or not. Besides, it is more fun to do something manually than to simply click on the ?Scan? button and let some software do it.

The following is a list of Trojans and the port numbers which they use, if you Netstat yourself and find any of the following open, then you can be pretty sure, that you are infected.



Port 12345(TCP)                  Netbus
Port 31337(UDP)                Back Orifice

For complete list, refer to the Tutorial on Trojans at: hackingtruths.box.sk/trojans.txt
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Now, the above tutorial resulted in a number of people raising questions like: If the 'netstat -a' command shows open ports on my system, does this mean that anyone can connect to them? Or, How can I close these open ports? How do I know if an open port is a threat to my system's security of not? Well, the answer to all these question would be clear, once you read the below paragraph:

Now, the thing to understand here is that, Port numbers are divided into three ranges:

The Well Known Ports are those from 0 through 1023. This range or ports is bound to the services running on them. By this what I mean is that each port usually has a specific service running on it. You see there is an internationally accepted Port Numbers to Services rule, (refer RFC 1700 Here) which specifies as to on what port number a particular service runs. For Example, By Default or normally FTP runs on Port 21. So if you find that Port 21 is open on a particular system, then it usually means that that particular system uses the FTP Protocol to transfer files. However, please note that some smart system administrators delibrately i.e. to fool lamers run fake services on popular ports. For Example, a system might be running a fake FTP daemon on Port 21. Although you get the same interface like the FTP daemon banner, response numbers etc, however, it actually might be a software logging your prescence and sometimes even tracing you!!!

The Registered Ports are those from 1024 through 49151. This range of port numbers is not bound to any specific service. Actually, Networking utlites like your Browser, Email Client, FTP software opens a random port within this range and starts a communication with the remote server. A port number within this range is the reason why you are able to surf the net or check your email etc.

If you find that when you give the netstat -a command, then a number of ports within this range are open, then you should probably not worry. These ports are simply opened so that you can get your software applications to do what you want them to do. These ports are opened temporarily by various applications to perform tasks. They act as a buffer transfering packets (data) received to the application and vis-a-versa. Once you close the application, then you find that these ports are closed automatically. For Example, when you type www.hotmail.com in your browser, then your browser randomly chooses a Registered Port and uses it as a buffer to communicate with the various remote servers involved.

The Dynamic and/or Private Ports are those from 49152 through 65535. This range is rarely used, and is mostly used by trojans, however some application do tend to use such high range port numbers. For Example,Sun starts their RPC ports at 32768.
So this basically brings us to what to do if you find that Netstat gives you a couple of open ports on your system:

1. Check the Trojan Port List and check if the open port matches with any of the popular ones. If it does then get a trojan Removal and remove the trojan.

2. If it doesn't or if the Trojan Remover says: No trojan found, then see if the open port lies in the registered Ports range. If yes, then you have nothing to worry, so forget about it.

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HACKING TRUTH: A common technique employed by a number of system administrators, is remapping ports. For example, normally the default port for HTTP is 80. However, the system administrator could also remap it to Port 8080. Now, if that is the case, then the homepage hosted at that server would be at:

http://domain.com:8080 instead of
http://domain.com:80

The idea behind Port Remapping is that instead of running a service on a well known port, where it can easily be exploited, it would be better to run it on a not so well known port, as the hacker, would find it more difficult to find that service. He would have to port scan high range of numbers to discover port remapping.

The ports used for remapping are usually pretty easy to remember. They are choosen keeping in mind the default port number at which the service being remapped should be running. For Example, POP by default runs on Port 110. However, if you were to remap it, you would choose any of the following: 1010, 11000, 1111 etc etc

Some sysadmins also like to choose Port numbers in the following manner: 1234,2345,3456,4567 and so on... Yet another reason as to why Port Remapping is done, is that on a Unix System to be able to listen to a port under 1024, you must have root previledges.
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Firewalls

Use of Firewalls is no longer confined to servers or websites or commerical companies. Even if you simply dial up into your ISP or use PPP (Point to Point Protocol) to surf the net, you simply cannot do without a firewall. So what exactly is a firewall?

Well, in non-geek language, a firewall is basically a shield which protects your system from the untrusted non-reliable systems connected to the Internet. It is a software which listens to all ports on your system for any attempts to open a connection and when it detects such an attempt, then it reacts according to the predefined set of rules. So basically, a firewall is something that protects the network(or systen) from the Internet. It is derived from the concept of firewalls used in vehicles which is a barrier made of fire resistant material protecting the vehicle in case of fire.

Now, for a better 'according to the bible' defination of a firewall: A firewall is best described as a software or hardware or both Hardware and Software packet filter that allows only selected packets to pass through from the Internet to your private internal network. A firewall is a system or a group of systems which guard a trusted network( The Internal Private Network from the untrusted network (The Internet.)

NOTE: This was a very brief desciption of what a firewall is, I would not be going into the details of their working in this manual.

Anyway,the term 'Firewalls', (which were generally used by companies for commerical purposes) has evolved into a new term called 'Personal Firewalls'. Now this term is basically used to refer to firewalls installed on a standalone system which may or may not be networked i.e. It usually connects to an ISP. Or in other words a personal firewall is a firewall used for personal use.

Now that you have a basic desciption as to what a firewall is, let us move on to why exactly you need to install a Firewall? Or, how can not installing a firewall pose a threat to the security of your system?

You see, when you are connected to the Internet, then you have millions of other untrusted systems connected to it as well. If somehow someone found out your IP address, then they could do probably anything to your system. They could exploit any vulnerability existing in your system, damage your data, and even use your system to hack into other computers.

Finding out someone'e IP Address is not very difficult. Anybody can find out your IP, through various Chat Services, Instant Messengers (ICQ, MSN, AOL etc), through a common ISP and numerous other ways. Infact finding out the IP Address of a specific person is not always the priority of some hackers.

What I mean to say by that is that there are a number of Scripts and utilities available which scan all IP addresses between a certain range for predefined common vulnerabilities. For Example, Systems with File Sharing Enabled or a system running an OS which is vulnerable to the Ping of Death attack etc etc As soon as a vulnerable system is found, then they use the IP to carry out the attacks.

The most common scanners look for systems with RAT's or Remote Administration Tools installed. They send a packet to common Trojan ports and display whether the victim's system has that Trojan installed or not. The 'Scan Range of IP Addresses' that these programs accept are quite wide and one can easily find a vulnerable system in the matter of minutes or even seconds.

Trojan Horses like Back Orifice provide remote access to your system and can set up a password sniffer. The combination of a back door and a sniffer is a dangerous one: The back door provides future remote access, while the sniffer may reveal important information about you like your other Passwords, Bank Details, Credit Card Numbers, Social Security Number etc If your home system is connected to a local LAN and the attacker manages to install a backdoor on it, then you probably have given the attacker the same access level to your internal network, as you have. This wouls also mean that you will have created a back door into your network that bypasses any firewall that may be guarding the front door.

You may argue with me that as you are using a dial up link to your ISP via PPP, the attacker would be able to access your machine only when you are online. Well, yes that is true, however, not completely true. Yes, it does make access to your system when you reconnect, difficult, as you have a dynamic Internet Protocol Address. But, although this provides a faint hope of protection, routine scanning of the range of IP's in which your IP lies, will more often than not reveal your current Dynamic IP and the back door will provide access to your system.

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HACKING TRUTH: Microsoft Says: War Dialer programs automatically scan for modems by trying every phone number within an exchange. If the modem can only be used for dial-out connections, a War Dialer won't discover it. However, PPP changes the equation, as it provides bidirectional transportmaking any connected system visible to scanners?and attackers.
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So how do I protect myself from such Scans and unsolicitated attacks? Well, this is where Personal Firewalls come in. They just like their name suggests, protect you from unsolicitated connection probes, scans, attacks.

They listen to all ports for any connection requests received (from both legitimate and fake hosts) and sent (by applications like Browser, Email Client etc.) As soon as such an instance is recorded, it pops up a warning asking you what to do or whether to allow the connection to initiate or not. This warning message also contains the IP which is trying to initiate the connection and also the Port Number to which it is trying to connect i.e. the Port to which the packet was sent. It also protects your system from Port Scans, DOS Attacks, Vulnerability attacks etc. So basically it acts as a shield or a buffer which does not allow your system to communicate with the untrusted systems directly.

Most Personal Firewalls have extensive logging facilities which allows you to track down the attackers. Some popular firewalls are:

1.BlackICE Defender : An IDS for PC's. It's available at http://www.networkice.com.

2. ZoneAlarm: The easiest to setup and manage firewall. Get it for free at: www.zonelabs.com

Once you have installed a firewall on your system, you will often get a number of Warnings which might seem to be as if someone is trying to break into your system, however, they are actually bogus messages, which are caused by either your OS itself or due to the process called Allocation of Dynamic IP's. For a details description of these two, read on.

Many people complain that as soon as they dial into their ISP, their firewall says that such and such IP is probing Port X. What causes them?
Well, this is quite common. The cause is that somebody hung up just before you dialed in and your ISP assigned you the same IP address. You are now seeing the remains of communication with the previous person. This is most common when the person to which the IP was assigned earlier was using ICQ or chat programs, was connected to a Game Server or simply turned off his modem before his communication with remote servers was complete.

You might even get a message like: Such and Such IP is trying to initaite a Netbios Session on Port X. This again is extrememly common. The following is an explanation as to why it happens, which I picked up a couple of days ago: NetBIOS requests to UDP port 137 are the most common item you will see in your firewall reject logs. This comes about from a feature in Microsoft's Windows: when a program resolves an IP address into a name, it may send a NetBIOS query to IP address. This is part of the background radiation of the Internet, and is nothing to be concerned about.

What Causes them? On virtually all systems (UNIX, Macintosh, Windows), programs call the function 'gethostbyaddr()' with the desired address. This function will then do the appropriate lookup, and return the name. This function is part of the sockets API. The key thing to remember about gethostbyaddr() is that it is virtual. It doesn't specify how it resolves an address into a name. In practice, it will use all available mechanisms. If we look at UNIX, Windows, and Macintosh systems, we see the following techniques:

DNS in-addr.arpa PTR queries sent to the DNS server
NetBIOS NodeStatus queries sent to the IP address
lookups in the /etc/hosts file
AppleTalk over IP name query sent to the IP address
RPC query sent to the UNIX NIS server
NetBIOS lookup sent to the WINS server

Windows systems do the /etc/hosts, DNS, WINS, and NodeStatus techniques. In more excruciating detail, Microsoft has a generic system component called a naming service. All the protocol stacks in the system (NetBIOS, TCP/IP, Novel IPX, AppleTalk, Banyan, etc.) register the kinds of name resolutions they can perform. Some RPC products will likewise register an NIS naming service. When a program requests to resolve an address, this address gets passed onto the generic naming service. Windows will try each registered name resolution subsystem sequentially until it gets an answer.

(Side note: User's sometimes complained that accessing Windows servers is slow. This is caused by installing unneeded protocol stacks that must timeout first before the real protocol stack is queried for the server name.).

The order in which it performs these resolution steps for IP addresses can be configured under the Windows registry key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider.

Breaking Through Firewalls

Although Firewalls are meant to provide your complete protection from Port Scan probes etc there are several holes existing in popular firewalls, waiting to be exploited. In this issue, I will discuss a hole in ZoneAlarm Version 2.1.10 to 2.0.26, which allows the attacker to port scan the target system (Although normally it should stop such scans.)

If one uses port 67 as the source port of a TCP or UDP scan, ZoneAlarm will let the packet through and will not notify the user. This means, that one can TCP or UDP port scan a ZoneAlarm protected computer as if there were no firewall there IF one uses port 67 as the source port on the packets.

Exploit:
UDP Scan:
You can use NMap to port scan the host with the following command line:

nmap -g67 -P0 -p130-140 -sU 192.168.128.88

(Notice the -g67 which specifies source port).

TCP Scan:
You can use NMap to port scan the host with the following command line:

nmap -g67 -P0 -p130-140 -sS 192.168.128.88

(Notice the -g67 which specifies source port).


Ankit Fadia

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add the open cmd prompt to folder context menus
also drives and My Computer

copy what's in the code area to notepad and save as cmd here.reg

CODE

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Drive\shell\cmd]
@="Command Prompt"

[HKEY_CLASSES_ROOT\Drive\shell\cmd\command]
@="cmd.exe /k \"cd %L\""

[HKEY_CLASSES_ROOT\Directory\shell\cmd]
@="Command Prompt"

[HKEY_CLASSES_ROOT\Directory\shell\cmd\command]
@="cmd.exe /k \"cd %L\""

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\cmd]
@="Command Prompt"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\cmd\command]
@="cmd.exe /k \"cd %L\""

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~~~~~~~~~COMMON FTP ERROR CODES~~~~~~~~~~

# Description

110 Restart marker reply. In this case, the text is exact and not left to the particular implementation; it must read: MARK yyyy = mmmm where yyyy is User-process data stream marker, and mmmm server's equivalent marker (note the spaces between markers and "=").

120 Service ready in nnn minutes.

125 Data connection already open; transfer starting.

150 File status okay; about to open data connection.

200 Command okay.

202 Command not implemented, superfluous at this site.

211 System status, or system help reply.

212 Directory status.

213 File status.

214 Help message.On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user.

215 NAME system type. Where NAME is an official system name from the list in the Assigned Numbers document.

220 Service ready for new user.

221 Service closing control connection.

225 Data connection open; no transfer in progress.

226 Closing data connection. Requested file action successful (for example, file transfer or file abort).

227 Entering Passive Mode (h1,h2,h3,h4,p1,p2).

230 User logged in, proceed. Logged out if appropriate.

250 Requested file action okay, completed.

257 "PATHNAME" created.

331 User name okay, need password.

332 Need account for login.

350 Requested file action pending further information

421 Service not available, closing control connection.This may be a reply to any command if the service knows it must shut down.

425 Can't open data connection.

426 Connection closed; transfer aborted.

450 Requested file action not taken.

451 Requested action aborted. Local error in processing.

452 Requested action not taken. Insufficient storage space in system.File unavailable (e.g., file busy).

500 Syntax error, command unrecognized. This may include errors such as command line too long.

501 Syntax error in parameters or arguments.

502 Command not implemented.

503 Bad sequence of commands.

504 Command not implemented for that parameter.

530 Not logged in.

532 Need account for storing files.

550 Requested action not taken. File unavailable (e.g., file not found, no access).

551 Requested action aborted. Page type unknown.

552 Requested file action aborted. Exceeded storage allocation (for current directory or dataset).

553 Requested action not taken. File name not allowed.

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ADSL - Asymmetric Digital Subscriber Line
AGP - Accelerated Graphics Port
ALI - Acer Labs, Incorporated
ALU - Arithmetic Logic Unit
AMD - Advanced Micro Devices
APC - American Power Conversion
ASCII - American Standard Code for Information Interchange
ASIC - Application Specific Integrated Circuit
ASPI - Advanced SCSI Programming Interface
AT - Advanced Technology
ATI - ATI Technologies Inc.
ATX - Advanced Technology Extended

--- B ---
BFG - BFG Technologies
BIOS - Basic Input Output System
BNC - Barrel Nut Connector

--- C ---
CAS - Column Address Signal
CD - Compact Disk
CDR - Compact Disk Recorder
CDRW - Compact Disk Re-Writer
CD-ROM - Compact Disk - Read Only Memory
CFM - Cubic Feet per Minute (ft�/min)
CMOS - Complementary Metal Oxide Semiconductor
CPU - Central Processing Unit
CTX - CTX Technology Corporation (Commited to Excellence)

--- D ---

DDR - Double Data Rate
DDR-SDRAM - Double Data Rate - Synchronous Dynamic Random Access Memory
DFI - DFI Inc. (Design for Innovation)
DIMM - Dual Inline Memory Module
DRAM - Dynamic Random Access Memory
DPI - Dots Per Inch
DSL - See ASDL
DVD - Digital Versatile Disc
DVD-RAM - Digital Versatile Disk - Random Access Memory

--- E ---
ECC - Error Correction Code
ECS - Elitegroup Computer Systems
EDO - Extended Data Out
EEPROM - Electrically Erasable Programmable Read-Only Memory
EPROM - Erasable Programmable Read-Only Memory
EVGA - EVGA Corporation

--- F ---
FC-PGA - Flip Chip Pin Grid Array
FDC - Floppy Disk Controller
FDD - Floppy Disk Drive
FPS - Frame Per Second
FPU - Floating Point Unit
FSAA - Full Screen Anti-Aliasing
FS - For Sale
FSB - Front Side Bus

--- G ---
GB - Gigabytes
GBps - Gigabytes per second or Gigabits per second
GDI - Graphical Device Interface
GHz - GigaHertz

--- H ---
HDD - Hard Disk Drive
HIS - Hightech Information System Limited
HP - Hewlett-Packard Development Company
HSF - Heatsink-Fan

--- I ---
IBM - International Business Machines Corporation
IC - Integrated Circuit
IDE - Integrated Drive Electronics
IFS- Item for Sale
IRQ - Interrupt Request
ISA - Industry Standard Architecture
ISO - International Standards Organization

--- J ---
JBL - JBL (Jame B. Lansing) Speakers
JVC - JVC Company of America

- K ---
Kbps - Kilobits Per Second
KBps - KiloBytes per second

--- L ---
LG - LG Electronics
LAN - Local Are Network
LCD - Liquid Crystal Display
LDT - Lightning Data Transport
LED - Light Emitting Diode

--- M ---
MAC - Media Access Control
MB � MotherBoard or Megabyte
MBps - Megabytes Per Second
Mbps - Megabits Per Second or Megabits Per Second
MHz - MegaHertz
MIPS - Million Instructions Per Second
MMX - Multi-Media Extensions
MSI - Micro Star International

--- N ---
NAS - Network Attached Storage
NAT - Network Address Translation
NEC - NEC Corporation
NIC - Network Interface Card

--- O ---
OC - Overclock (Over Clock)
OCZ - OCZ Technology
OEM - Original Equipment Manufacturer

--- P ---
PC - Personal Computer
PCB - Printed Circuit Board
PCI - Peripheral Component Interconnect
PDA - Personal Digital Assistant
PCMCIA - Peripheral Component Microchannel Interconnect Architecture
PGA - Professional Graphics Array
PLD - Programmable Logic Device
PM - Private Message / Private Messaging
PnP - Plug 'n Play
PNY - PNY Technology
POST - Power On Self Test
PPPoA - Point-to-Point Protocol over ATM
PPPoE - Point-to-Point Protocol over Ethernet
PQI - PQI Corporation
PSU - Power Supply Unit

--- R ---
RAID - Redundant Array of Inexpensive Disks
RAM - Random Access Memory
RAMDAC - Random Access Memory Digital Analog Convertor
RDRAM - Rambus Dynamic Random Access Memory
ROM - Read Only Memory
RPM - Revolutions Per Minute

--- S ---
SASID - Self-scanned Amorphous Silicon Integrated Display
SCA - SCSI Configured Automatically
SCSI - Small Computer System Interface
SDRAM - Synchronous Dynamic Random Access Memory
SECC - Single Edge Contact Connector
SODIMM - Small Outline Dual Inline Memory Module
SPARC - Scalable Processor ArChitecture
SOHO - Small Office Home Office
SRAM - Static Random Access Memory
SSE - Streaming SIMD Extensions
SVGA - Super Video Graphics Array
S/PDIF - Sony/Philips Digital Interface

--- T ---
TB - Terabytes
TBps - Terabytes per second
Tbps - Terabits per second
TDK - TDK Electronics
TEC - Thermoelectric Cooler
TPC - TipidPC
TWAIN - Technology Without An Important Name

--- U ---
UART - Universal Asynchronous Receiver/Transmitter
USB - Universal Serial Bus
UTP - Unshieled Twisted Pair

--- V ---
VCD - Video CD
VPN - Virtual Private Network

--- W ---
WAN - Wide Area Network
WTB - Want to Buy
WYSIWYG - What You See Is What You Get

--- X ---
XGA - Extended Graphics Array
XFX - XFX Graphics, a Division of Pine
XMS - Extended Memory Specification
XT - Extended Technology

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کد:

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You may not realize it, but your computer and your car have something in common: they both need regular maintenance. No, you don't need to change your computer's oil. But you should be updating your software, keeping your antivirus subscription up to date, and checking for spyware. Read on to learn what you can do to help improve your computer's security.


Getting started

Here are some basics maintenance tasks you can do today to start improving your computer's security. Be sure you make these part of your ongoing maintenance as well.

* Sign up for software update e-mail notices. Many software companies will send you e-mail whenever a software update is available. This is particularly important for your operating system (e.g., Microsoft VV!|VD0VV$® or Macintosh), your antivirus program, and your firewall.
* Register your software. If you still have registration forms for existing software, send them in. And be sure to register new software in the future. This is another way for the software manufacturer to alert you when new updates are available.
* Install software updates immediately.
When you get an update notice, download the update immediately and install it. (Remember, downloading and installing are two separate tasks.)
An ounce of prevention

A few simple steps will help you keep your files safe and clean.

* Step 1: Update your software
* Step 2: Backup your files
* Step 3: Use antivirus software and keep it updated
* Step 4: Change your passwords


Developing ongoing maintenance practices

Now that you've done some ground work, it's time to start moving into longer term maintenance tasks. These are all tasks that you should do today (or as soon as possible) to get started. But for best results, make these a part of a regular maintenance schedule. We recommend setting aside time each week to help keep your computer secure.

* Back up your files. Backing up your files simply means creating a copy of your computer files that you can use in the event the originals are lost. (Accidents can happen.) To learn more read our tips for backing up information.


* Scan your files with up to date antivirus software. Use your antivirus scan tool regularly to search for potential computer viruses and worms. Also, check your antivirus program's user manual to see if you can schedule an automatic scan of your computer. To learn more, read our tips for reducing your virus risk
.
* Change your passwords. Using the same password increases the odds that someone else will discover it. Change all of your passwords regularly (we recommend monthly) to reduce your risk. Also, choose your passwords carefully. To learn more, read our tips for creating stronger passwords
.

Making a schedule

One of the best ways to help protect your computer is to perform maintenance regularly. To help you keep track, we suggest making a regular "appointment" with your computer. Treat it like you would any other appointment. Record it in your datebook or online calendar, and if you cannot make it, reschedule. Remember, you are not only helping to improve your computer, you are also helping to protect your personal information.

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کد:

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Configuring ZoneAlarm Security Settings
(

If you're running ZoneAlarm Pro you will probably have considered that most of the "advanced" settings might as well be in Chinese for all the use they are. User friendly they are not!

If you are not on a LAN (connected to another computer in a network) you can use this guide to give your firewall some real muscle and a new lease of life:

Launch ZoneAlarm Pro and click to highlight the "Firewall" tab on the left hand side . In the pane that appears on the right hand side in the section "Internet Zone Security" set the slider control to "High" Then click the "Custom" button in the same section.

The next settings page is divided into two sections with tabs Internet Zone and Trusted Zone at the top of the page. Under the Internet Zone tab there is a list of settings that can be accessed by scrolling. At the top is the high security settings and the only thing that should check from there is "allow broadcast/multicast". The rest should be unchecked.

Scroll down until you get to the medium security settings area. Check all the boxes in this section until you get to "Block Incomming UDP Ports". When you check that you will be asked to supply a list of ports, and in the field at the bottom of the page enter 1-65535

Then go back to the list and check the box alongside "Block Outgoing UDP Ports" and at the bottom of the page enter 1-19, 22-79, 82-7999, 8082-65535

Repeat this proceedure for the following settings
"Block Incomming TCP Ports": 1-65535
"Block Outgoing TCP Ports": 1-19, 22-79, 82-7999, 8082-65535
Then click "Apply", "Ok" at the bottom of the page.

Back in the right hand "Firewall" pane go next to the yellow "Trusted Zone Security" section and set it to "high" with the slider. Click "Custom" and repeat the above proceedure this time choosing the Trusted Zone tab at the top of the settings page.

These settings will stop all incoming packets @ports 1-65535 and also block all pings, trojans etc... this will also stop all spyware or applications from phoning home from your drive without your knowledge!

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If you are feeling adventurous ...

If you have a PlayStation and a PC, and do not have a pad for the computer, or simply those that there are in the market seem to you too expensive or any you don't like, you have a great option here. It connects your PlayStation pad (anyone) to your PC conserving ALL its functionality thanks to the excellent driver DirectPad.

Advantages

*

It enjoys the ample range of pads that exists mainly for PlayStation and, of its compared price those of PC (speaking in terms quality-price).

*

They work for all pads including the dual-shock pads. Also, with the dual-shock ones you will be able to use both analog controls and the capacity for "vibrating" (Force Feedback) in Windows games that support it (Need Speed III, Incoming, Star Wars Rogue Squadron, Flight Simulator, Forsaken, etc). If you want to see the complete list of games that support the Force Feedback, look here.

*

You will be able to use ALL the buttons of PlayStation pad in your preferred games, altogether 10 if you use digitals or 16 if you use the analog control.

*

You can connect simultaneously up to two pads.

*

With the dual-shock pads you will be able to change between the digital control to analog during any game session.

*

If you already have standard PC pad you will be able to use it simultaneously without losing functionality in either of them (if connecting two joysticks/pads by a Y connector and to the game port, you will only be able to use 2 buttons in each joystick/pad)

*

The assembly is not very complicated.

*

In theory it would have to work with any control system of game for PlayStation (pad of another mark, steering wheel, etc).

Disadvantages

*

You will only be able to use it in Windows games, since driver it is programmed for DirectX.

*

If you want to use the dual-shock you will need an external power supply, or steal power from inside the computer.

*

The connection goes to the parallel port, which means that if you are going to use the printer you change connectors... but it is worth the trouble!

Words before beginning

Following with the preliminaries, I will going to make clear that you do not need any knowledge electronics, although knowing how to solder and know how to handle a multi-meter. If you do not have any idea, or don't want to do it get a friend who knows to help you.


http://www.emulatronia.com/reportajes/directpad/psxeng/index.htm

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کد:

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Convert Stubborn Webpage To .pdf

I have come across some websites that i wanted to save the page for later review. I found that i was having some problems with certain sites. I found a way around it.

what you need:adobe acrobat 6 pro or better
popupcop

there may be a simpler way to do this but i found that this works:

when at a webpage that you want to copy (YOU MUST BE USING IE AND HAVE BOTH POPUPCOP INSTALLED AND ADOBE ACROBAT 6 PRO OR HIGHER, ACROBAT ICON MUST BE IN IE TOOLBAR TO CONVERT TO .PDF), slide popupcops popup intensity bar to the far left, now click on adobe acrobat icon to convert webpage to .pdf document. I have yet to find a webpage where this trick does not work.

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