topic ssh filtered in Operating System - Linux

ssh filtered

Jean-Christophe Valiere — Mon, 21 Jun 2004 03:28:47 GMT

Hello,

My Server is a RH 2.1AS. It was running very nicely since about 2 months and today when I tried to connect from ssh on it, Nmap tells me that the ssh port is 'filtered'.I know what that means, but I'm looking for informations about which IP are allowed to connect to with ssh.
What is curious is that the compaqdiag port is filtered too and I can't access the machine from the RLO.
Does somebody already have this problem ?

Thanks.

Re: ssh filtered

Sergejs Svitnevs — Mon, 21 Jun 2004 04:43:43 GMT

Nmap docs:
"Filtered means that a firewall, filter, or other network obstacle is covering the port and preventing nmap from determining whether the port is open."
Nmap is not getting an answer for 22 and 2301 ports.

Are you using a router with access lists or firewall on the network?
Could these services be blocked by your local firewall?

Regards,
Sergejs

Re: ssh filtered

Jean-Christophe Valiere — Mon, 21 Jun 2004 07:43:47 GMT

The Network Configuration is OK because I got 2 servers in the same vlan with the same configuration (except IP of coure).
The probleme is that I would be sure not to loose any log information by rebooting the server as I need to kwnow why this 2 port changed their state to 'filtered'

Thanks.