Hi Everyone


Is it possible to putty to bypass the isa Firewall


Let me tell you my network configuration first


i have internet access through only ISA server, that too with port number 80


Even i cant broswse or access internet with my gateway


only through Internet explorer i can able access the internet


So what i want is, through putty i can bypass the traffic with port 80 and then i can


able to access the other host for telnet,ping and other protocols etc ?????????????????


For example telnet yahoo.com 80 ?????????????????????????

If you do a quick Google you'll see several HOWTOs explaining how to do this sort of thing. Make sure that you talk with your network administrator before doing this, though, because you might be breaking rules which could get you fired, etc. Do NOT bypass any network restrictions unless you've been given a green light from upper levels. If you explain to them why you need certain (currently restricted) tools to work you shouldn't have a problem getting authorization for this. They might even lift your restrictions so that you don't need Putty at all. Having said that, this doesn't sound like a GNU/Linux question so far, and it might be moved to General unless the discussion turns more GNU/Linux-specific.

Even i am a network administrator

i will put trail proxy server and i will try this

Its is only for learning experience

Then you'd need to make the remote SSH daemon listen on port 80.

can you be somewhat clear please

SSH daemons listen on port 22 by default. So if your outgoing connections are only allowed to have destination port 80 then you have a problem. In some cases, the problem can be solved by changing the port on which the remote SSH daemon is listening on to 80. BTW, it's kinda weird to only allow 80 (HTTP) and not 443 (HTTPS) don't you think?

Hi Thanks for your reply

Even https is also allowed

So is it possible to set in putty allow through the proxy

server ???????????????

It sounds like only port 80 is allowed through the firewall and you also go through a web proxy. You might try looking at the proxy setting in IE and see if you need to apply these setting in Firefox.

Yes, people use SSH in situations like this all the time. There's even tools like Corkscrew and Proxytunnel which are designed to let you use SSH through a proxy. In any case, at the very least you'll have to make sure your SSH daemon is listening on an allowed port.

Thanks for your reply atleast now i can able to reach you my need

http://i80.photobucket.com/albums/j1...untitled-1.jpg

let me try Corkscrew and Proxytunnel also