On Tue, Feb 13, 2001 at 08:27:54AM +0100, Jean-Eric Cuendet wrote:
> I have a machine in DMZ that have no access to our internal DNS. When
> connecting, ssh tries to reverse lookup the address but don't find it...
> The problem is that it takes ~20 seconds until there is a timeout which is
> annoying!
> What's the goal of this? Is it a way to deactivate reverse lookup?
you can try to use
sshd -u0
to switch off DNS lookups for wtmp.
> Other problem:
> I have a line like this:
> Feb 12 11:57:10 garfield sshd[25970]: Did not receive ident string from
> 10.2.4.7.
> every 5 minutes in /var/log/messages. What's the cause?
someone is scanning the machine?
-m
