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ssh and priviledged ports

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4 replies

by ratherbfishing

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Running ssh 1.2.30 on Caldera 2.3 LINUX. After I couldn't connect ssh through a new firewall, I discoverd it was attempting outbound connections at lower than ports 1024. SO far I have seen 1023 and 1022.

I have also been told by people that ssh does not use priviledged ports. Well it is on my system!

Can someone tell me if this is normal behavior? Is there a way to force it to use 1024 and up? and would I want to? I need the info so I can configure the firewall.

Thanks!

4 replies

by mckaytech

By default, the implementation of sshd that I use looks for incoming connections on tcp port 22.

Just to keep folks guessing, you might want to choose some other port for this, but I don't see any reason to mess with the high port range.

paul

by ratherbfishing

Yes, ssh listens on port 22, but then negotiates a port to use with the client, supposedly 1024 or higher. However, for some reason it always wants to use 1023 or lower port on my system. I have seen in news lists a few other folks with this problem, but no clear answers so far.
Thanks for trying!

by ratherbfishing

You are talkng about the port that the server listens on...the default is 22 which is fine. i am talking about the port that is negotiated to use after the initial connection is made. See answer to paul.
Thanks anyway!

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