Re: Weird connection problem - Netfilter?

[Andrew Greenburg]

At 04:42 PM 4/30/2002 -0400, you wrote:
> On Tue, Apr 30, 2002 at 03:34:34PM -0500, Andrew Greenburg wrote:
>
> > >> >DNS??
> > >>
> > >> Well, I've been trying to connect by IP address.
> > >
> > >No, I think what Ramin meant was "reverse DNS".
> > >
> > >Maybe the server is trying to do a reverse lookup on your IP address 
> to see
> > >if it can put a hostname into its logfiles ?
> >
> > Could be, but I administer one of the boxes, and I haven't changed 
> anything
> > to that effect on it.
> >
> > I did see the identd requests come across when initiating an FTP
> > connection, but I'm getting these connection lapses when connecting to
> > services that don't trigger an identd request (including http).
>
> Try to do the same packet sniffing for DNS. Actually, what is the IP of the
> client? You should be able to resolve that to a DNS name (at least from the
> server machine).

Well, the reverse DNS isn't there (and never has been). However, today is 
the first time that it has ever caused me problems. There may have been a 
change to one of our ISP's DNS servers, though. I'll look into it.

--
 Andrew M. Greenburg                   |   agreenbu   @  in-span   .   net
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