Hi, On Tue, Dec 8, 2009 at 17:24, Constantine Shulyupin <co...@linuxdriver.co.il > wrote:
> Hi colleagues, > > I have: servers (HTTP, FTP, RTSP and other) behind firewall and a > client PC. The client wishes to connect to severer. But firewall > doesn't allows him to connect to server. > > The server knows the clients IP and can open a connection. > Unfortunately I can't set up tunneling/VPN on client because of system > administration limitation. > > Theoretically, I can rewrite inetd to make connection to client and > rewrite FTP client to listen for connection from server or code custom > protocol. > for simple protocols (http, scp) you can use reverse port forwarding feature of ssh: Run on the server following: ssh -R 9922:127.0.0.1:22 a...@client.somecompany.com Causes ssh to login into a...@client.somecompany.com, listen for connections on port 9922 on the remote machine and forward them to 127.0.0.1:22 (back to the server) Then you will be able to ssh into the server from the client by ssh'ing into port 9922 on the client. -- Arie
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