SSH and no public IP

mikolaj.sowinski · 11-25-2008, 11:42 AM

Hi!

Sorry if that problem was discussed before, but I'm really not very familiar with the terminology ( I'm now exploring advantages of SSH

) and I don't even now how to precisely express what I need.

I've got server that has NO PUBLIC IP address ( server <-> linksys router <-> local LAN ( no port forwarding possibility

) <-> Internet ).

My question is if it's possible to connect to my server from outside local LAN network? Maybe using SSH account ( for example on SDF? )?

klearview · 11-25-2008, 01:46 PM

Easily done using SSH reverse port forwarding. Read the howto here:

http://lericson.se/docs/reverse-port...rding-openssh/

lseelbac · 11-25-2008, 02:08 PM

If I'm reading your network "diagram" correctly, the solution above *might* work. What is the relationship between the local LAN and the internet? Private addressing? Router/firewall? It sounds like your linksys is sitting on some type of corporate network and that makes this dicey at best.

mikolaj.sowinski · 11-25-2008, 03:52 PM

LAN is my local ISP where everybody has own IP in the local network ( so my router has one ).

billymayday · 11-25-2008, 03:58 PM

Are you saying your router has a public IP or a private IP?

If it's a public IP, you should be able to forward port 22 on the router to the server and just ssh in.

mikolaj.sowinski · 11-25-2008, 05:00 PM

I mean that my router is "behind" LAN ( I can log in from computer in my ISP's network, but not from outside local LAN ), so I think that it's a private IP ( as far as I understand this term ).

billymayday · 11-25-2008, 05:11 PM

It the router's ISP facing IP start with 10., 172.16. or 192.168, then it's private.

mikolaj.sowinski · 11-26-2008, 10:53 AM

Yes, it begins with 192.168

I tired the solution mentioned by klearview, but I always get a warning:

Quote:

Warning: remote port forwarding failed for listen port 13337

The command was:

Quote:

ssh -N -f -R 13337:localhost:22 <my_username>@sdf.lonestar.org