On Mon, Aug 06, 2001 at 08:13:29AM -0500, Kathy Bieltz wrote:
> I had a similar problem. I modified the
> /etc/xinetd.d/wu-ftpd file and changed
> log_on_success += DURATION USERID
> log_on_failure += USERID
> to
> log_on_success += DURATION HOST
> log_on_failure += HOST
> Ross Ferson wrote:
> > When logging in to my ftp server, from any outside IP (meaning a
> > real ip from outside my network) I log in immediately. No delay at all.
> > But if I try to log into it from an internal IP (10.10.10.* scheme)
> > there is a huge delay. Even if I log in, and then disconnect and
> > reconnect, the delay is still there. I have added a hostname to
> > /etc/hosts but this has not helped. I was thinking it was a delay while
> > the machine tries to resolve my ip and that hosts addition would take
> > care of this but obviously I am wrong. I am using RH 7.1, WU-FTP (stock)
> > etc... Ideas?
Kathy's edit addresses the problem of the ftp client's host silently
dropping auth (ident, port 113) requests and appears valid. xinetd would
wait for the auth response and then timeout.
Another possible source of delay that I have experienced with ftp is where
there is no reverse DNS service for the ftp client's IP address. In this
case, the wu ftp daemon in.ftpd (as opposed to xinetd) will introduce a
delay, which I've seen range from 3 to 30 seconds. (The delay seems to
be consistent for any given case). I've been unable to find any ftpd
option to suppress the reverse DNS lookup.
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