On Fri, 20 Jul 2001, Denis Croombs wrote:
> I have set-up the firewall on a DNS server to HIGH & only open the UDP port,
> but when I ask www.hackerwatch.org/probe to probe the system it states that
> the following ports are open ! 21,23,25,80,110,139,143,443
> Is this correct and to be expected ?
> How do I close the unwanted ports ?
> how do I make the system more secure (as secure as is reasonable for a DNS
> server)
First guess is that you told it to 'trust' eth0. Otherwise please post the
contents of /etc/sysconfig/ipchains. That list of open ports is quite
extensive... ftp, telnet, smtp, http, pop3, samba, imap, and https. You
could disable some of the unneeded services. Odd that sshd isn't in that
list though...
--
Chris Kloiber, RHCE
Enterprise Support - Red Hat, Inc.
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