On Mon, 2006-05-15 at 20:39, Don Russell wrote: > >> What is doing the "reverse lookup"? And can I just turn that off? It > >> doesn't seem to make much sense to me that I add complexity in the > >> form of a dns server that does little more than convert the ip > >> address brom binary form to printable characters. I'd rather just > >> skip the reverse lookup altogether. > >> > >> Am I missing some fundamental philosophy here? What's the point of > >> reverse look ups in such cases? > >> > > > > Sshd does this so it can apply the tcp-wrappers rules from > > /etc/hosts.allow and /etc/hosts.deny. > > > > Set "UseDNS no" option in /etc/ssh/sshd_config to disable this. > > Since /etc/hosts.allow and /etc/hosts.deny contain only comments, this > seems like a good idea. > I now have "UseDNS no".... working great. :-) That solved 50% of my > current problem set.... sounds like there is a similar solution for my > smtp server... DNS is just kind of fundamental for internet services. Most things do have options to turn the lookups off but everything will do it in its own way. -- Les Mikesell lesmikesell@xxxxxxxxx
