Multiple Session using port 1081 in one box using SSH

Question

I am setting Linux Hopping Station to another different servers.

My current config to connect to another servers is using different port to connect.

e.g

ssh -D 1080 -p 22 [email protected]

ssh -D 1081 -p 22 [email protected]

Now what I would like to have to share the same port from the same box.

ssh -D 1080 -p 22 [email protected]

ssh -D 1080 -p 22 [email protected]

But when I share it, I will get below error:

bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 1080 Could not request local forwarding.

How could I configure the same port? help. thank you.

I want to share the same port because this is needed when configuring firewall in Citrix Firewall on other machine, not needed to many many ports and keep changing when changing connection.

thank you.

Answer 1

You can only do that if you have two different IP addresses on that machine. If it's only for local usage, you can use the 127.0.0.1/8 address space like in:

ssh -D 127.0.0.1:1080 -p 22 [email protected] ssh -D 127.0.0.2:1080 -p 22 [email protected] 

Best of luck,
João Miguel Neves