Hi Steven, Thank you very much for your help. You are right. I think it was the firewall problem. I remember during the Redhat 7.2 installation, for the firewall, I selected " Medium" (sorry, it was not "default"). Now, how can I shut down the firewall? Thanks alot! Hailong
>On Mon, 6 Jan 2003, Hailong Li wrote: > >> Hi there, >> My computer --- computer 1 is redhat 7.2. I can ssh from computer 1 to another >> linux computer --- computer 2. But I can not ssh from computer 2 to computer >> 1. I checked computer 1, sshd is on. When I installed Redhat 7.2 on computer >> 1, for Firewall, I selected "Default". Was there anything wrong about it? > > First of all, test if the ssh problem is caused by the firewall. >Temporarily shut it down and see if ssh to computer 1 works again. Then >turn it back on. If you're running ipchains, "service ipchains stop" and >"service ipchains start" brings your firewall down and back up. If >"ipchains -L" shows something, ipchains is running. > I don't know what "Default" did during installation, but there >probably was something wrong with it. You can replace your current >firewall by running "gnome-lokkit", and in the course of answering its >questions, enable access to the ssh service. I believe it will install an >ipchains firewall. After you've used gnome-lokkit, which is designed for >beginners in linux, you may want to consider learning how to build >firewalls for yourself. Start with "man iptables" because by 7.2 ipchains >was becoming obsolete. Then look on the web for iptables documentation -- >for example >http://www.netfilter.org/documentation/tutorials/blueflux/iptables-tutorial.html > > >-- >Steven Yellin > > > >_______________________________________________ >Seawolf-list mailing list >[EMAIL PROTECTED] >https://listman.redhat.com/mailman/listinfo/seawolf-list > _______________________________________________ Seawolf-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/seawolf-list
