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0.0 Intro
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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0.0 Intro
| Well, finally
I decided to take 15 minutes out of my life and write a paper on proxy
servers. I have answered tons of mail,posts etc on how to hide your
IP while exploring the Internet . So here it is... some BASIC info
on proxies...... |
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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
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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. |
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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 |
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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 |
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Any questions/comments/corrections/ -> c1ph3r@hotmail.com
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