Turned out to be a mis-configuration of /etc/ssh/sshd_config.

Thanks!!


On 2024-10-21 23:22, Rusty Carruth via PLUG-discuss wrote:
> The other questions are all great, but can you ssh from the server to 
> itself as the desired user?  That is, ssh theSSHdude@localhost , which 
> should hopefully rule out network issues ;-)
> 
> I'll also mention that I had a weird issue with SSH where I could ssh 
> from machine A to machine B, but not from B to A!  THAT turned out to 
> be a netmask issue!  And ChatGPT ALMOST got the answer. You could try 
> your favorite AI to see if it can help, but be sure to give it more 
> info than you think you should - I should have given it the output of 
> ifconfig on both computers and it probably would have caught it....
> 
> On 10/21/24 18:46, Keith Smith via PLUG-discuss wrote:
>> Hi,
>> 
>> I am a little stuck.
>> 
>> I am trying to configure a user that will allow me to log into an 
>> Ubuntu 24.04lts server via SSH.
>> 
>> I created a line : "AllowUsers default" in /etc/ssh/sshd_config
>> 
>> Then sudo systemctl restart ssh
>> 
>> Try to login and get "client_loop: send disconnect: Broken pipe"
>> 
>> sudo tail /var/log/faillog returns nothing.
>> 
>> I can SSH into the server from my Kubuntu desktop under the default 
>> user created during server o/s install
>> 
>> A search says it is probably a network issue.  Does not make sense 
>> given I can SSH in using another user.
>> 
>> Any thoughts are much appreciated.
>> 
>> Keith
>> 
>> 
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