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I am using openbsd 3.0 for firewall/nat in front of my lan, and have
configured ftp-proxy as indicated in the man pages. This was all working
great until a few days ago. Now, I can't get an ftp client to get past the
initial connection. The status message I'm getting is "Socket connected.
Waiting for welcome message." It hangs at that point until I kill it. I
have not changed anything on the openbsd box, nor on my client. The
settings on the ftp client do not seem to affect anything, whether I set it
to active or passive, or turn proxy use on or off. I had been using active
mode with proxy with no problems.
I also turned on tcpdump to monitor pflog, but nothing was being blocked,
so I don't think the problem is in pf.conf. Just to be sure, I reset
pf.conf to pass in/out all, but this did not help.
I believe the problem is in ftp-proxy somewhere because I temporarily
configured my client machine with an outside ip address (bypassing openbsd)
and ftp worked fine.
If anyone has a suggestion about what might be wrong, please email to me
directly as I am not on the openbsd mailing list.
Thanks very much.