Re: xinetd and hosts.allow
From: Aaron Konstam (akonstam_at_trinity.edu)
Date: Sat, 17 Apr 2004 18:35:01 -0500 To: For users of Fedora Core releases <firstname.lastname@example.org>
On Sat, Apr 17, 2004 at 11:35:50AM -0400, Jay Daniels wrote:
> I cannot get xinetd and tcp wrappers hosts.allow and hosts.deny to work.
> # hosts.allow This file describes the names of the hosts which are
> # allowed to use the local INET services, as decided
> # by the '/usr/sbin/tcpd' server.
> ALL: LOCAL, 192.168.2.0/255.255.255.0, darkforce.darktech.org, my_static_ip_here
The LOCAL should not be there.
> # allow ssh connection from dialup@myisp disabled until resolved.
> #sshd: 22.214.171.124/255.255.255.0
> ALL: ALL
> I have tried several combination in hosts.allow and restarted xinetd,
> but when I have the above lines uncommented I cannot send any mail via
> smtp port 25 from localhost!
> Any ideas?
> This may all be redundant since the firewall is suppose to block
> specified connections to these ports, but I was thinking tcp wrappers
> would add to the security?
> Also, I am still unclear how to edit /etc/hosts and my hosts file may
> have something to do with it.
> $ cat /etc/hosts
> # Do not remove the following line, or various programs
> # that require network functionality will fail.
> 127.0.0.1 localhost.localdomain localhost
> 192.168.2.1 darkforce.darktech.org darkforce #me
> 192.168.2.12 darkstar.darktech.org darkstar #my laptop
> 126.96.36.199 cobra.python-hosting.com cobra #my hosting
> Should I have my gateway ip address in place of the 188.8.131.52? How
> does tcp wrappers distinguish between eth0 and eth1?
> Note that I can leave hosts.allow and hosts.deny blank and all is
> well, I can send mail from localhost, etc.
> Is this even necessary if my firewall is working properly by allowing
> connections from my local net and blocking certain connections from my
> inet interface?
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-- ------------------------------------------- Aaron Konstam Computer Science Trinity University One Trinity Place. San Antonio, TX 78212-7200 telephone: (210)-999-7484 email:email@example.com -- fedora-list mailing list firstname.lastname@example.org To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list