yes. this is very possible and fairly trivial for any programmer who knows how to write networking code. cliff rayman genwax.com Mailing Lists wrote: > Hi! > > Back where I work, we are using a firewall the blocks everything coming in, > and gives internal users permission to use the www, ftp, pop and mail > ports. (no icq, no aol, no nothing else). > > But I overheard one of my users bragging that it bypassed the firewall > using two linux machines doing port redirection. > > I did a little research on this and the most plausible way I found is that > he is running a linux inside the firewall which grabs everyhing on a > certain port (let's say the icq server port), then forward it through port > 80 to another linux box outside the firewall which make the actual call to > the icq server on the right port. Is that possible? Is there any other > alternatives he can be using? > > btw, I don't know what the firewall used is, I'm the sysadm for my > division, but we are using the corporate firewall. > > Thanks!
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 13:59:08 PDT