Information - Proxy

Hii

People talk so much about Spoofing IP & all.. I am trying to give a basic idea of this.

NOTE - I m not teaching any hacking in this tutorial. This is a brief info of Proxy,.

Just wanted beginners to have an idea about what proxies are…

1.0 What is a proxy server
1.1 Why use one
1.2 How to find one
1.3 How to configure one in your browser
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1.0 What is a proxy server

Proxy Server is a firewall and cache server. It allows and entire
network of computers to access the internet(http or ftp)with a single
IP. Let’s say we have 3 computers in some small network in Malaysia
going through a proxy server:

1 -> 2 -> 3 -> PROXY SERVER -> THE WEB SITE

Now assume you are at home with an Internet access through your ISP,
this is what your connection looks like :

Your PC -> Your ISP -> THE WEB SITE

Ok, now…. If the proxy server in the network above allows other
users to go through it we can to this :

1 -> 2 -> 3 -> PROXY SERVER -> THE WEB SITE
|
|
Your PC -> Your ISP

As you can see in the above diagram we can go through that proxy
server and hide our real IP ! “THE WEB SITE” will only see the proxies
IP of the network you are going through..

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1.1 Why use one

That was mentioned before, to hide your REAL IP. But, some of the
proxies can give out/forward your real IP to the site you are
connecting to and do infact log their users.Hmmm, well there is a
problem that was discovered while attempting a phf exploit on a site.
As it turns out, proxy servers with the Squid Cache forward you real
IP upon a request, but to my knowledge some do not log their users.
Here are two sites for testing proxies :

http://www.tamos.com/bin/proxy.cgi

http://kyticr.kuicr.kyoto-u.ac.jp/cgi-bin/phf?Qalias=x%0a/bin/cat%20/etc/passwd

If you see your IP in any of the two URL’s -> your proxy sucks, get a
new one.

edited:
If this sites do not work , visit any site that gives you your ip like
www.whatismyip.com etc.
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1.2 How to find one

Ez way : Visit wwwboard related to hacking/cracking/warez/phreaking
and look at the IP’s of the parties that post there and write them
down. (many of them will spoof their IP)

Ez way2: ask others

Harder : Domain Scan for open ports 8080,3128.

V Hard : ping host.com:8080 or 3128

edited:
google “proxy list” and similar keywords and you will find a number of
sites listing proxies some for free and some paid.
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1.3 How to configure one in your browser

In I.E :

View -> Internet Options -> Connection

Now type in the IP of the proxy and try connecting to it through port
8080,80,3128

Netscape (from memory):

Preferences -> Network -> Proxy tab

Same as in I.E

edited:
Mozilla Firefox:

Tools–>Options–>general–>Connection setting
there select manual proxy configuration.
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