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Re: Delay when logginng in to FC5 via ssh



Les Mikesell wrote:
On Mon, 2006-05-15 at 17:15, Don Russell wrote:

So, I conclude that ssh is trying to determine the host name of the machine connecting to it, based on the connecting machine's IP address.

[...]

The problem is, it is not practical to code all my private addresses in /etc/hosts. The network clients use dhcp so of course their addresses may change.

The reverse lookup doesn't really have to match the host's
own idea of it's hostname - it just has to return something
that you can log.  One approach is to run your own nameserver
that is primary for your private ranges (no sense in bothering
the root servers for them...).  Then if you don't want to
set up the DHCP  server to give out IP addresses tied to
MAC addresses you can you use names like dchp-ip-number for
the names you return.


That's an interesting idea.... but... :-)

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?

Don


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