ssh X-forwarding and remote forwarding behind proxy

Thread Tools Search this Thread
Special Forums Cybersecurity ssh X-forwarding and remote forwarding behind proxy
# 1  
Old 10-24-2008
ssh X-forwarding and remote forwarding behind proxy

from my workplace we use a proxy to connect to the outside world, including external ssh servers.
The problem is that the server is seeing the connection coming from the proxy and knows nothing about the client behind it. The ssh connection itself works fine, but x-forwarding does not work as expected. In my opinion this is because the server is trying to use the display of the proxy and not the one of the client.
Same issue with remote port forwarding, when someone uses the remote port I think the ssh server forwards the request to the proxy and not to the real client.

I have found two workarounds to solve the x-forwarding issue:
-create a VPN between the client and the server, and do the x-forwarding inside the VPN (which is similar to a LAN)
-install a VNC server on the ssh server, a VNC client on the ssh client and do a local port forwarding, then connect to localhost:xxxx

I'm sure the VPN solution will fix the remote forwarding as well, but... is there a way to get around these issues without using other software, maybe some kind of environment variables to set in OpenSSH?
# 2  
Old 10-29-2008
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Ssh agent forwarding in script did not work

Sorry for the wrong question. (2 Replies)
Discussion started by: hce
2 Replies

2. Shell Programming and Scripting

SSH forwarding based on ports

Hi guys, I'm trying to set up an Ubuntu VPN server that will forward an ssh connection automatically as a proxy to two separate LAN hosts. What I'm looking at doing is making SSH listen on two ports (if that is possible) and get some kind of script, preferably something in bash, that will listen... (2 Replies)
Discussion started by: 3therk1ll
2 Replies

3. IP Networking

Ftp over SSH port forwarding

Hi, I'm trying to connect ftp over ssh port forwarding to a sever(UnixC) behind FireWall(F/W). here's my env and question. UnixA(SSH Client) ----F/W ---- UnixB(SSH Svr) ---- UnixC (FTP, 21) UnixA wants to connect ftp service of UnixC via SSH port forwarding on UnixB. Unix A,... (3 Replies)
Discussion started by: hanyunq
3 Replies

4. Cybersecurity

X forwarding vs Remote DISPLAY

Hello, I have a question about X forwarding. I was told that we can't X forwarding anymore, do to a security checklist. Example: bitlord@server1# ssh -X server2 So we have to use the DISPLAY variable now. I thought this was less secure? Example: bitlord@server1# xhost + server2 server1... (0 Replies)
Discussion started by: bitlord
0 Replies

5. UNIX for Advanced & Expert Users

SSH X forwarding question

Hi, Local PC - Ubuntu 11.04 desktop Remote PC - Debian 6.0 desktop My problem is 2 desktops, remote and local, are displayed on the same workplace on local PC. It would be quite confusing. Is there any way to display each desktop on one workplace(on its own workplace) OR displaying both... (0 Replies)
Discussion started by: satimis
0 Replies

6. AIX

Forwarding AIX syslog/errorlog to remote SQL DB

Due to a project I'm currently tasked with I'm spending my time trying to find a way to forward the syslog to a remote, in this case Red Hat, server and squeezing it into a SQL DB. Rsyslog is doing this job quite nicely for most of our test-servers, but I couldn't find any reliable information on... (1 Reply)
Discussion started by: Skleindl
1 Replies

7. UNIX for Dummies Questions & Answers

SSH port forwarding/tunneling

So this seems like something that should be simple...but I can't quite seem to get it up and running. I have a machine, .107 with a GUI on port 8443. The problem is that I can't connect directly to .107 from my laptop. Now I have another machine, .69 that can connect to .107. So shouldn't I be able... (4 Replies)
Discussion started by: DeCoTwc
4 Replies

8. Shell Programming and Scripting

SSH Tunnel Forwarding with no shell

Hi Experts, I am trying to have the SSH tunnel Remote forwarding command in a shell script. I should be able to do 2 tasks, but unable to get that going. 1) I have 3 servers Server 1, Server 2, Server 3. I have my Database running on Server 1 and my script running on Server 2 which should... (0 Replies)
Discussion started by: Scriptingglitch
0 Replies

9. UNIX for Advanced & Expert Users

Problem with OpenSSH Remote Port Forwarding with Bind_address

As in the ssh(1) man page: -R bind_address:]port:host:hostport .......By default, the listening socket on the server will be bound to the loopback interface only. This may be overridden by specifying a bind_address. An empty bind_address, or the address `*', indicates... (2 Replies)
Discussion started by: ahmad.zuhd
2 Replies

10. OS X (Apple)

ssh forwarding to X11

Hi, I have issues with running graphical interfaces on my computer being remotely logged into a network via the -X option of ssh. My .cshrc shows DISPLAY=hostname:0 and I think there should be a different number instead of the 0. I changed the ssh_config file already to 'X11 forwarding yes', which... (0 Replies)
Discussion started by: ginese
0 Replies
Login or Register to Ask a Question

Featured Tech Videos