topic Re: Network/ssh issue in Operating System - Linux

Network/ssh issue

Prashant Zanwar_4 — Wed, 24 Nov 2004 11:18:03 GMT

I got one user sitting at offshore who cannot connect to server at my place -- NC USA.

He has ssh client for windows. It just pops that using port 22..authentication method profile name..and nothing happens further..no password prompt nothing..

He tries the other server which say somethign like below:

"server responded No further authentication methods available"

I have tried some 10,000 lines of the ssh.log which doesnt have any entry for him.

So i doubt if he is allowed for this through firewall. I cant check the firewall as it's a different team.

What else i shall be checking.

I am going to check the other servers log now..

Thanks and regards
Prashant

Re: Network/ssh issue

Prashant Zanwar_4 — Wed, 24 Nov 2004 11:31:18 GMT

Nov 24 07:07:20 hertz sshd[2633]: Failed none for illegal user cthyagar from 10.76.168.112 port 3513 ssh2
Nov 24 07:07:20 hertz sshd[2633]: Failed none for illegal user cthyagar from 10.76.168.112 port 3513 ssh2
Nov 24 08:19:27 hertz sshd[8642]: Failed rhosts-rsa for illegal user cthyagar from 64.102.122.157 port 1023 ruser root
Nov 24 08:19:27 hertz sshd[8642]: Failed rsa for illegal user cthyagar from 64.102.122.157 port 1023

These are error messages from other server. Can someone figure out, what is it?

I have asked user to check client settings and network setting too..

For above seems straightforward that user is illegal to connect to this server.

Let me know if anyone has got any other clues..
Cheers
Prashant

Re: Network/ssh issue

Huc_1 — Wed, 24 Nov 2004 12:05:09 GMT

Just a suggestion perhaps you could ask the user to enable log on is ssh client, as you dont manage firewall is suppose you can not run ethereal on the target node or are you allowed this on your host ?, not sure this would help much, you probably just see what you already know from logs.

keep us inform on progress have a bit of time will try and help, yhay is if I am able

Jean-Pierre

Re: Network/ssh issue

RAC_1 — Wed, 24 Nov 2004 12:59:29 GMT

On server do as follows.

sshd -ddd -p "some_other_port"
Ask user to log on now. Post the output.

Anil

Re: Network/ssh issue

Manuel Wolfshant — Wed, 24 Nov 2004 23:38:25 GMT

illegal user has nothing to do with the authentication mechanisms. reverify the username used to connect, and if that particular user is allowed to connect via ssh.

Re: Network/ssh issue

Ross Minkov — Thu, 25 Nov 2004 10:03:24 GMT

Have the user to try to connect using:
ssh -vvv ...

-v Verbose mode. Causes ssh to print debugging messages about its progress. This is helpful in debugging connection, authentication, and configuration problems. Multiple -v options increases the verbosity. Maximum is 3.

HTH,
Ross