Here are various ways you can bypass a block while at school and things.
Keyword Filter
If your blocker has a Keyword Filter just try typing the address with
..The https makes it hard to scan because the website goes through a server scanning for bad words and the https makes it hard to scan.
You can also find out what words are blocked by going here:
If it blocks ports well I have no clue on how to bypass it.
But you can do the following to figure out if a port is blocked. Most censors blocks the ports 80, 1080, 3128 and 8080, because these are the common proxy ports. Because all of the proxies on common ports are useless for you, you have to find proxies that are listening on an uncommon port. These are very difficult to find.
You can easily test which ports are blocked on your connection. Just open the DOS-prompt, type telnet login.icq.com 80 and hit enter. The number is the port you want to test. If you get some wired symbols in return everything is ok, if it says "timeout" or something similar, that port is blocked by your ISP. Here are the most important ports for us:
20+21 - FTP (file transfer)
22 - SSH (secure remote access)
23 - telnet (remote access) and also Wingates (special kind of proxies)
25 - SMTP (send email)
53 - DNS (resolves an URL to an IP)
80 - HTTP (normal web browsing) and also a proxy
110 - POP3 (receive email)
443 - SSL (secure HTTPS connections)
1080 - Socks proxy
3128 - Squid proxy
8000 - Junkbuster proxy
8080 - a proxy
I am not sure how to bypass a DNS blocker that blocks the websites. Other than typing in the websites IP. If you want to get the websites IP address do the following this only works for windows XP
1. Press start on the taskbar.
2. Choose Run...
3. Type in cmd.
4. Press enter or "ok"
5. Then type in the command prompt type: ping
(Example: ping )It then gives you the IP address. Then enter it in the address bar of your browser. This MIGHT work.
Here is info on different programs that block websites.
3.5 Censorware on the client (child protection e.t.c)
Normally the censorship is implemented on servers from the ISP or government, but in some schools, private homes and some companies the blocking software is installed on every PC.
More info:
3.5.1 NetNanny
More info:
3.5.2 CyberSitter
More info:
3.5.3 AOL Parental Control
More info:
3.5.4 CyberPatrol
More info:
3.5.5. SurfControl
More info:
3.6 Censorware on the server (inside of networks)
These are programs that are mostly installed on servers in schools, libraries, companies or countries with a little Internet population.
3.6.1 Bess/N2H2
Bess is a proxy filter that is often used in schools/universities and companies. It can easily bypassed with Webproxies.
More info:
3.6.2 DansGuardian
It's a Open Source Webfilter. Free for non-commercial use and thus it is widely spread in universities, schools and libraries. It works as a Proxy with URL and keyword filtering (and also with the PICS-Standard). It's often used on an IPCop machine; however, the author from DansGuardian doesn't like it.
More Info:
3.6.3 WebSense
More Info:
3.6.4 WebWasher
More Info:
3.6.5 SmartFilter
More Info:
3.6.6 squidGuard
More Info:
That?s all the information I gathered.
This is all. I hope it helps some of you.
I didn't know a lot this is mostly from tutorials all over the internet.
If anything is wrong I am sorry.
Hope it helps,
-Marcus AKA Mystixs
