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Date:      Wed, 23 Jun 1999 22:21:15 -0700
From:      Phil Staub <phils@staub.net>
To:        freebsd-net@freebsd.org
Subject:   problems with ftp
Message-ID:  <19990623222114.A629@staub.net>

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Can anyone suggest a reason that a 3.2-RELEASE box would have problems
establishing an ftp connection *anywhere* (even to my ISP only a modem
hop away), but telnet, mail, http, virtually any other kind of
connection works just fine. I also had this problem in 3.1-RELEASE. In
fact, the problem is one of the reasons I upgraded this evening to
3.2.

I am connected to my ISP (pacifier.com) via a dialup connection with a
dynamically allocated IP address. Another strange thing is that I can
telnet to pacifier and ftp *back* to my home machine just fine.

Before you ask, my firewall configuration is "open":

# ipfw show
00100 1516 174622 allow ip from any to any via lo0
00200    0      0 deny ip from any to 127.0.0.0/8
65000 6717 529654 allow ip from any to any
65535    0      0 deny ip from any to any

I am doing *some* filtering in ppp.conf, but nothing on ports 20 and
21. I am denying inbound and outbound tcp and udp packets on ports 194
and 5190 through 5193 in the in and out filters.

When I attempt an ftp, it eventually times out and says:
	ftp: connect: No route to host

Here is part of the output of tcpdump -e -vv -i tun0:

22:08:41.452569 ip: ip34.van28.pacifier.com.1092 > pacifier.com.ftp: S 307640048:307640048(0) win 16384 <mss 1460> (DF) (ttl 64, id 4398)
22:08:41.549604 ip: vancts12.pacifier.com > ip34.van28.pacifier.com: icmp: host pacifier.com unreachable (ttl 255, id 5268)

I'm really stumped with this one, and I'd appreciate any help anyone
would care to offer.

Thanks,
Phil



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