Date: Fri, 3 Jan 1997 23:14:07 -0600 From: joed@ksu.edu (Joe Diehl) To: freebsd-hackers@FreeBSD.ORG Subject: network errors with ftp, scp, and irc's dcc Message-ID: <Mutt.19970103231407.joed@marvin.ksu.edu>
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Greetings, I seem to be running into a few problems on my machine at home... I've been having problems only under 2.2-ALPHA though I havn't been able to link the problems to FreeBSD. I still havn't but I'm running out of ideas. Essentially if I ftp from my home machine to vega.cis.ksu.edu or cbs.ksu.ksu.edu and try to put a file, the connection is established but no data is sent. If i ftp to fox.ksu.ksu.edu I can put a file just fine. I also cannot scp from my home machine to either of the above machines nor can I do a dcc send from home to these machines. The reverse direction works just fine. Ie vega% scp marvin:foo . (this works) marvin% scp foo vega: (this fails) Setup an ftp to a remote machine where I tired to put a file and grabbed bits and pieces out of tcpdump: 22:46:25.691003 ts64.slip.ksu.edu.1046 > fubar.ksu.ksu.edu.ident: P 1:6(5) ack 1 win 17520 (DF) 22:46:25.920620 fubar.ksu.ksu.edu.ident > ts64.slip.ksu.edu.1046: . ack 6 win 8760 (DF) 22:46:25.920802 ts64.slip.ksu.edu.1046 > fubar.ksu.ksu.edu.ident: P 6:11(5) ack 1 win 17520 (DF) 22:46:26.110462 fubar.ksu.ksu.edu.ident > ts64.slip.ksu.edu.1046: . ack 11 win 8760 (DF) 22:46:26.750552 fubar.ksu.ksu.edu.ident > ts64.slip.ksu.edu.1046: P 1:34(33) ack 11 win 8760 (DF) 22:46:26.752426 ts64.slip.ksu.edu.1046 > fubar.ksu.ksu.edu.ident: F 11:11(0) ack 34 win 17520 (DF) 22:46:26.759977 fubar.ksu.ksu.edu.ident > ts64.slip.ksu.edu.1046: F 34:34(0) ack 11 win 8760 (DF) 22:46:26.760172 ts64.slip.ksu.edu.1046 > fubar.ksu.ksu.edu.ident: F 11:11(0) ack 35 win 17520 (DF) 22:46:26.920460 fubar.ksu.ksu.edu.ident > ts64.slip.ksu.edu.1046: . ack 12 win 8760 (DF) 22:46:26.920802 fubar.ksu.ksu.edu.ident > ts64.slip.ksu.edu.1046: . ack 12 win 8760 (DF) 22:48:42.073540 ts64.slip.ksu.edu.40012 > fubar.ksu.ksu.edu.ftp-data: P 1:1025(1024) ack 1 win 17520 (DF) [tos 0x8] 22:48:42.076650 ts64.slip.ksu.edu.40012 > fubar.ksu.ksu.edu.ftp-data: . 1025:2485(1460) ack 1 win 17520 (DF) [tos 0x8] 22:48:42.150151 ts64.slip.ksu.edu.1047 > fubar.ksu.ksu.edu.ftp: . ack 423 win 17520 (DF) [tos 0x10] 22:48:44.950279 ts64.slip.ksu.edu.40012 > fubar.ksu.ksu.edu.ftp-data: . 1:1461(1460) ack 1 win 17520 (DF) [tos 0x8] 22:48:50.950280 ts64.slip.ksu.edu.40012 > fubar.ksu.ksu.edu.ftp-data: . 1:1461(1460) ack 1 win 17520 (DF) [tos 0x8] 22:49:02.950252 ts64.slip.ksu.edu.40012 > fubar.ksu.ksu.edu.ftp-data: . 1:1461(1460) ack 1 win 17520 (DF) [tos 0x8] 22:49:10.950381 ts64.slip.ksu.edu.40010 > fubar.ksu.ksu.edu.ftp-data: . 1:1461(1460) ack 1 win 17520 (DF) [tos 0x8] 22:50:14.950348 ts64.slip.ksu.edu.40012 > fubar.ksu.ksu.edu.ftp-data: . 1:1461(1460) ack 1 win 17520 (DF) [tos 0x8] 22:50:14.950535 ts64.slip.ksu.edu.40010 > fubar.ksu.ksu.edu.ftp-data: . 1:1461(1460) ack 1 win 17520 (DF) [tos 0x8] I do have a more complete log from the other end (that was filtering out to just this connection instead of picking out segments from a tcpdump of my ppp link ;) if anyone is interested. These machines all work for everyone else and there are no errors being sent to their /var/adm/messages files. I have to think it's on my end, but I'm completely stumped as to what it could be it's my fault. Since it is a network base issue here's my interface settings and routing table: joed@marvin:~% netstat -nr Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 129.130.231.12 UGSc 84 1 tun0 127.0.0.1 127.0.0.1 UH 1 335 lo0 129.130.231.12 129.130.231.64 UH 84 0 tun0 129.130.231.64 127.0.0.1 UH 0 0 lo0 172.16.25/24 link#2 UC 0 0 joed@marvin:~% ifconfig -a lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500 ix0: flags=843<UP,BROADCAST,RUNNING,SIMPLEX> mtu 1500 inet 172.16.25.1 netmask 0xffffff00 broadcast 127.16.25.1 ether 00:aa:00:3d:bb:21 tun0: flags=8151<UP,POINTOPOINT,RUNNING,PROMISC,MULTICAST> mtu 1500 inet 129.130.231.64 --> 129.130.231.12 netmask 0xffffff00 sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552 lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 inet 127.0.0.1 netmask 0xff000000 I'm wonder if this is related to the syn flood protections in FreeBSD-2.2, as I do know for sure my network worked like a charm with FreeBSD-2.1.5. Any thoughts? Joe Diehl <joed@ksu.edu>
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