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http tunnelling





kv
At my work, I am behind proxy which allows only http/https connections. All other ports are blocked. I read about http tunnelling/socks etc. I tried configuring putty to be run as http tunnel. However, the tunnel software does not seem to connect. If I have to run a tunnel client, should the destination server be running a tunner server or something like that? To connect through ssh is not possible since port 22 is also blocked. Help!
badai
u need another computer on the Internet to act as server, not the same computer behind proxy.
Hogwarts
kv wrote:
To connect through ssh is not possible since port 22 is also blocked. Help!


Reconfigure SSHD to run on port 443, i.e. HTTPS. The data for both protocols is encrypted and would therefore look the same to the proxy.
Jaan
You can set up a tunnel on your home internet connection if it's fast enough (most will give an adequate speed).... I forget exactly how to do this, but its worth a try before going over to the online tunnels you have to pay for.
kv
Ok, I was kindof thinking that just a ssh client is enough for creating a tunnel. Apparently I was wrong. There should be a sshd running somewhere which allows port forwarding. I can't setup one at home computer since the speed is horrible and I won't be keeping it up all time. Are there any ssh shell account providers which listen at port 443 and free? I googled a bit, but not much luck.
Hogwarts
Probably not. You'll likely need to look into getting a (definitely Linux) virtual server or dedicated server Sad

SSHD doesn't allow port-forwarding of such, it's just an SSH server that can be reconfigured to run on a different port. You'll need root-access if you want to reconfigure it, however.
thnn
There is also the option of using HTTP-Tunnel
I have found this to be intermittent though, and often cause timeouts while trying to access things. My understanding of how this works is you configure your programs to use it as a proxy, and it routes all your traffic as HTTP traffic to their own servers. However if your workplace has blocked these server it may not work. I believe they still offer a free version.
albuferque
You can get a free shell from one of these:

http://on-net.info/shell-accounts/

Getting one may take some time.
Hogwarts
albuferque wrote:
You can get a free shell from one of these:

http://on-net.info/shell-accounts/


He's looking for one he can use using only port 80/443. Read the first post Sad
coreymanshack
You can host a php like proxy if all you are doing is viewing blocked web pages.
kv
coreymanshack wrote:
You can host a php like proxy if all you are doing is viewing blocked web pages.


No, it is not the webpages, but the other services which are not available through http/https on port 80/443 -- like pop/smtp/telnet/etc/etc that I want to use from behind firewall which allows only http/https on port 80/443.
coreymanshack
talk to your system administrator?
pumpin
I'll say u check for some other tunnelling softwares with some kinda installation wizard. Google fo "Your-freedom" it has an easy installation wizard Wink
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