This router is a Netgear WNDR3700v4, and for now, I keep the default settings.
Inside the LAN, there is my host 'vvv', with this IP:192.168.2.4
In order to connect to this box through ssh from the outside, I have forwarded its port 22 to the router port 8924.
So, from an outside computer, I get:
When I try the same from another box inside the local network:
With my previous router I didn't have this problem. I've been looking in the manual, but I do not see any specific setting or solution to allow inside computers use the same ports as outside computers do, for ssh.
Could you give me a hint here? What to read? What to look for?
Thanks for reading this.

Sounds like a loopback problem. Some routers/modems block loopback connections (connecting to your own WAN IP from inside the LAN). You should check if there's an option to enable/disable this, but if not, you may be out of luck.

BTW - I hope you changed the URL, IP, username, and port numbers in your post, otherwise everybody in the world now knows how to hit the ssh server on your box, AND a valid username to use.

1 members found this post helpful.

Thanks for your prompt answer.
I'll keep looking and playing with it.
BTW all my posts are carefully sanitized

Set an entry to resolve your domain name to the local IP in either your local DNS or your hosts file.

Thank you, descendant_command.
I followed your advise, and the result is exactly the same

You'll need to connect to port 22, unless you've set sshd to listen on 8924 as well.

I have a Netgear WNDR3700v3 and can ssh from inside the LAN using my external IP address so unless there is a big difference in firmware there should not be a loopback problem. I forward the same port number but that should not be a problem either.

You have not posted enough information but are you using keys or typing in a password? Is the local and outside computer the same except for "location". If different, have you verified that both are configured the same?

I assume you can ssh from within the LAN i.e. using its local IP address and port 22 from the same box that fails using your external URL.

HI there

You specified the forwarding port in both examples, surely one must be port 22 and the other one 8924 ?
From outside port 22, which then goes inside on port 8924
So when you inside the network, use port 8924

??

Thank you for the replies.
The line on my original post is part of a script that I use in every case (the client computer is a laptop). It used to work on both locations (inside the LAN and away from it). Now it does not.
@michaelk, the fact that you have no problems using the outside port when you are inside strongly suggests that my issue has to do with the router configs. I will take a further look; I must have missed something...