SSH reverse proxy?

ginda · 08-13-2014, 07:23 AM

Hi all

Servers - SERVER1, SERVER2, SERVER3, SERVER4, SERVER5
OS - Centos 6
Service - SSH port 22

I have 5 servers on my LAN and the network has one external static IP address which points to SERVER1.

mydomain.com -> SERVER1

I can ssh to SERVER1 from home fine, but would like to also ssh directly onto SERVER2,3,4 & 5.

server2.mydomain.com -> local IP Address
server3.mydomain.com -> local IP Address
server4.mydomain.com -> local IP Address
server5.mydomain.com -> local IP Address

Can someone please recommend a way I can achieve this? We cannot setup a VPN and we cannot change the sshd port for each server.

Thanks in advance

smallpond · 08-13-2014, 07:55 AM

Using iptables pick four ports and forward them to the servers. Set the servers sshd to listen on its port.

Doug G · 08-13-2014, 03:25 PM

You can try creating a port forward over the connection to server 1 using some arbitrary port forwarded to the target server LAN ip on port 22, something like

-L 12345:192.168.1.20:22

Then open an instance of your ssh client on the workstation to port 12345.