sanju_linux_9 wrote: > Hi, > All of a sudden I cannot access a RHEL installed server through ssh > using "Putty" tool. The error window is being displayed saying "The > server has unexpectedly closed the network connection". But using > another network gateway, I can do the ssh to the server. > > Can anybody tell me what can be the reason? >
What do you mean, precisely, by 'But using another network gateway'? Apparently, sshd is up and accepting logins, so I would guess that the problem is not with sshd, but with some other facet of the network. If you have a packet filter (iptables or whatever) up and running, you might have a rule that permits logins from some IP addys, but not from others. I have just this sort of situation set up on my LAN, so that my OpenBSD packet filter will permit logins from the 192.168.1.x range, but not from the public IP in the 70.142.248.x range that the world sees and can use for accessing websites and the sendmail MTA on my server. Because I am the only one who is supposed to be logging in on ssh, and I am logging in from local machines only, this is a good way to keep the rabble out. There are probably a lot of other ways, that might cause your inability to log in. I would look at whatever changes I had made most recently, first, since the problem appeared 'all of a sudden'. -- -wittig http://www.robertwittig.com/ http://robertwittig.net/ http://robertwittig.org/ . To unsubscribe from this list, please email [EMAIL PROTECTED] & you will be removed. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/LINUX_Newbies/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/LINUX_Newbies/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
