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- **********
-
- HOW TO BYPASS '403' BANS
-
- -----------
- October 13 1998
- Written by J.C.
- Legion Of Magic
- http://our.url.would.be.here.but.unfortunately.it.is.not.for.reasons.too.long.to
- .explain.damn.damn.damn
- -----------
-
-
- -----------
- This text is for educational and informational purposes only.
-
-
- So, you're at school or college or work, ready to catch up with the latest in
- the underground,
- but you can't visit a particular domain -- because it's banned by the
- school/college/work proxy.
- Try the following to work around the proxy.
-
- This text is based around the 2600 site (www.2600.com).
-
- Bypassing the proxy is easy for visiting 2600. 2600 registered '2600.net' and
- '2600.org' in addition
- to the normal '2600.com'. 2600.net and 2600.org both mirror the main 2600.com
- site. A lot of proxies
- only have 2600.com in their list of banned domains. Going to 2600.net or
- 2600.org overcomes this
- problem.
-
- If a domain is banned, getting to the same content using a different top-level
- domain name (TLDN)
- is reliant on:
-
- 1. The list of banned domains not covering all possible TLDNs (e.g. not having
- all of 2600.com,
- 2600.net, 2600.org banned.) Having a disorganized sysadmin helps.
-
- 2. Having the desired, non-banned domain actually registered in the first place!
- It would be no good
- trying to access 2600.net if it didn't exist.
-
- 3. Having the non-banned, registered domain mirroring the banned domain, and not
- merely providing a
- link to the banned domain in the index.html of the unbanned domain, e.g. if
- 2600.net and 2600.org
- merely provided in their index.html pages a hyperlink to 2600.com, when the link
- is clicked, the
- proxy would detect packets coming from 2600.com and kill the connection with an
- error 403.
-
- If all three of the criteria are fulfilled then the forbidden material should be
- accessible.
-
- However, say if the domain you wanted to visit didn't fulfil guideline 1 and the
- site was only
- registered in one TLDN (e.g. hackersclub.com, and that one domain was banned.)
- If your proxy does
- not ban connecting to websites by IP (i.e. you can type in an IP in Navigator's
- URL field and you
- can visit that site,) there is a way around the lack of a different TLDN. If you
- have access to an
- IRC client, log on to an IRC server (just about any IRC server worth its salt
- should work) and type
-
- /dns apple.com
-
- Substitute the banned domain for 'apple.com'.
-
- The site's IP should come up in the IRC client's console. Type that IP into
- Navigator's URL field.
- If your proxy has banned a domain *name* but not a ban on the IP of the domain
- (and allows connecting
- by IP) then the connection shouldn't be killed.
-
- If you don't have access to an IRC client on the terminal you are using, then
- search the hard drive
- for 'nslookup' or similar. On Unix the nslookup tool is named 'nslookup' (duh),
- on the Mac OS or
- Windows try searching for the program 'AgNetTools', since it includes an
- nslookup tool.
-
- Nslookup is fairly straightforward to use. Simply type in the domain and get the
- IP back.
-
- If there's no nslookup or IRC client on your hard drive, try looking for a
- website with nslookup
- running as a cgi. I don't know for sure but www.cyberarmy.com may help.
-
- You can try that IP-substituting scheme instead of going through steps 1-3.
-
-
- Personal Shoutouts (the other kind of PS):
- Hi to [warlock] (Don't give up [warlock], keep the faith goddamnit...), ShAmAn,
- Braxus, kM for hosting muh first text and friends at #hackersclub that I have
- neglected/am too
- lazy to mention...
-