Jack LaPlante said: > I'm setting up my nifty new dedicated web server with a firewall > like this: (I'm on RH9, the rpms look like the latest avail ) > > iptables -F > iptables -A INPUT -i lo -j ACCEPT > iptables -A INPUT -m multiport -p tcp --dport www,ssh,sftp,smtp,10000 \ > -j ACCEPT > iptables -A INPUT -j LOG -m limit > iptables -A INPUT -j REJECT > > (an o'reilly setup from the linux security cookbook) > > Now, when I log in via SSH or SFTP, there is a 30 second pause while my > password authorizes. It used to take a second or two. Flush the rules > and the login is up to speed again.
You don't allow inbound 53/udp, so your machine can't use DNS. By default, sshd looks up the name of the connecting machine, and it looks like the DNS lookup takes 30 seconds to time out. > I want to force my clients to use SFTP for all their file transfers but > the delay is going to be annoying. > > Any suggestions to speed up my logins? iptables -A INPUT --source $DNS_SERVER_IP_HERE -p udp --sport 53 -j ACCEPT Assuming I got the syntax right, do that once for each DNS server you have. -- No PGP signature because I'm far from home and sending via webmail. _______________________________________________ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
