Date: Fri, 28 Jan 2000 14:38:59 +1000 (EST) From: Colin Campbell <sgcccdc@citec.qld.gov.au> To: Ryan Thompson <freebsd@sasknow.com> Cc: freebsd-questions@freebsd.org Subject: Re: FTP: 425 Can't build data connection: operation timed out Message-ID: <Pine.LNX.4.10.10001281435360.10829-200000@guru.citec.qld.gov.au> In-Reply-To: <Pine.BSF.4.10.10001272143050.55916-200000@sasknow.com>
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[-- Attachment #1 --]
Hi,
I wrote this litle piece of goods cos I like "snoop". See if this tells
you anything useful. I have to ask this, but are you sure nothing has
changed in the ipfw setup?
--------------------- cut here -------------------------------------------
#! /usr/bin/perl
# $Id: tcplook.pl,v 1.2 1999/10/20 06:26:09 root Exp $
#
use strict;
open (TCPDUMP, "tcpdump -x -s 1500 -l @ARGV |") or die "$!";
my $word;
my $char;
my $count = 0;
while (<TCPDUMP>) {
/^[0-9]/ and do {print "\n", $_; $count = 0; next};
/^\s+/ and do {
s/\s*//;
chomp;
printf "%8d: %-40s ", $count, $_;
for $word (split / /) {
for $char (split(//, pack("H4", $word))) {
if ((ord($char) < 32) or
(ord($char) > 126)) {
print ".";
}
else {
print $char;
}
}
}
print "\n";
};
$count += 16;
}
--------------------- cut here -------------------------------------------
Just run it like you would run tcpdump.
Colin
[-- Attachment #2 --]
21:58:15.220022 www.4907 > wcarchive.cdrom.com.ftp: P 2650612463:2650612529(66) ack 2058698042 win 17520 (DF) [tos 0x10]
21:58:15.256134 www.4910 > wcarchive.cdrom.com.ftp: P 2742694133:2742694143(10) ack 3148606659 win 17520 (DF) [tos 0x10]
21:58:15.628825 wcarchive.cdrom.com.ftp > www.4907: P 1:31(30) ack 66 win 17520 [tos 0x10]
21:58:15.635494 wcarchive.cdrom.com.ftp-data > www.49404: S 3190143704:3190143704(0) win 16384 <mss 1460> [tos 0x8]
21:58:15.635826 www.49404 > wcarchive.cdrom.com.ftp-data: R 0:0(0) ack 3190143705 win 0
21:58:15.659964 www.4907 > wcarchive.cdrom.com.ftp: P 66:72(6) ack 31 win 17520 (DF) [tos 0x10]
21:58:15.994044 wcarchive.cdrom.com.ftp > www.4907: P 31:85(54) ack 66 win 17520 [tos 0x10]
21:58:15.994903 wcarchive.cdrom.com.ftp > www.4907: P 85:115(30) ack 66 win 17520 [tos 0x10]
21:58:16.009706 wcarchive.cdrom.com.ftp > www.4907: . ack 72 win 17514 [tos 0x10]
21:58:16.010273 wcarchive.cdrom.com.ftp-data > www.49405: S 3190748565:3190748565(0) win 16384 <mss 1460> [tos 0x8]
21:58:16.010666 www.49405 > wcarchive.cdrom.com.ftp-data: S 2746235331:2746235331(0) ack 3190748566 win 17520 <mss 1460> (DF)
21:58:16.059915 www.4907 > wcarchive.cdrom.com.ftp: . ack 115 win 17490 (DF) [tos 0x10]
21:58:16.382051 wcarchive.cdrom.com.ftp-data > www.49405: . ack 1 win 17520 [tos 0x8]
21:58:16.382230 wcarchive.cdrom.com.ftp > www.4907: P 115:172(57) ack 72 win 17520 [tos 0x10]
21:58:16.386484 wcarchive.cdrom.com.ftp > www.4907: P 172:196(24) ack 72 win 17520 [tos 0x10]
21:58:16.387619 wcarchive.cdrom.com.ftp-data > www.49405: FP 1:607(606) ack 1 win 17520 [tos 0x8]
21:58:16.387919 www.49405 > wcarchive.cdrom.com.ftp-data: . ack 608 win 16914 (DF)
21:58:16.459922 www.4907 > wcarchive.cdrom.com.ftp: . ack 196 win 17409 (DF) [tos 0x10]
21:58:18.220019 www.4910 > wcarchive.cdrom.com.ftp: P 0:10(10) ack 1 win 17520 (DF) [tos 0x10]
21:58:18.220125 www.4907 > wcarchive.cdrom.com.ftp: P 70:72(2) ack 196 win 17409 (DF) [tos 0x10]
21:58:18.251343 wcarchive.cdrom.com.ftp > www.4910: P 1:59(58) ack 10 win 17520 [tos 0x10]
21:58:18.259977 www.4910 > wcarchive.cdrom.com.ftp: . ack 59 win 17520 (DF) [tos 0x10]
21:58:18.602126 wcarchive.cdrom.com.ftp > www.4907: . ack 72 win 17520 [tos 0x10]
21:58:18.602182 wcarchive.cdrom.com.ftp > www.4910: . ack 10 win 17520 [tos 0x10]
21:58:19.248288 www.4910 > wcarchive.cdrom.com.ftp: P 10:20(10) ack 59 win 17520 (DF) [tos 0x10]
21:58:19.668862 wcarchive.cdrom.com.ftp > www.4910: P 59:1083(1024) ack 20 win 17520 [tos 0x10]
21:58:19.669416 wcarchive.cdrom.com.ftp > www.4910: P 1083:1591(508) ack 20 win 17520 [tos 0x10]
21:58:19.676018 www.4910 > wcarchive.cdrom.com.ftp: P 20:26(6) ack 1591 win 17520 (DF) [tos 0x10]
21:58:20.081965 wcarchive.cdrom.com.ftp > www.4910: P 1591:1630(39) ack 26 win 17520 [tos 0x10]
21:58:20.082022 wcarchive.cdrom.com.ftp > www.4910: . ack 26 win 17514 [tos 0x10]
21:58:20.082720 www.4910 > wcarchive.cdrom.com.ftp: . ack 1630 win 17520 (DF) [tos 0x10]
21:58:21.391847 www.4910 > wcarchive.cdrom.com.ftp: P 26:55(29) ack 1630 win 17520 (DF) [tos 0x10]
21:58:21.718747 wcarchive.cdrom.com.ftp > www.4910: . ack 55 win 17491 [tos 0x10]
21:58:21.718868 wcarchive.cdrom.com.ftp > www.4910: P 1630:1660(30) ack 55 win 17520 [tos 0x10]
21:58:21.719600 www.4910 > wcarchive.cdrom.com.ftp: P 55:61(6) ack 1660 win 17520 (DF) [tos 0x10]
21:58:22.036744 wcarchive.cdrom.com.ftp > www.4910: . ack 61 win 17514 [tos 0x10]
21:58:22.036803 wcarchive.cdrom.com.ftp-data > www.56041: S 3206128389:3206128389(0) win 16384 <mss 1460> [tos 0x8]
21:58:23.220075 www.4907 > wcarchive.cdrom.com.ftp: P 70:72(2) ack 196 win 17409 (DF) [tos 0x10]
21:58:23.564929 wcarchive.cdrom.com.ftp > www.4907: . ack 72 win 17520 [tos 0x10]
21:58:25.156029 wcarchive.cdrom.com.ftp-data > www.56041: S 3206128389:3206128389(0) win 16384 <mss 1460> [tos 0x8]
21:58:31.551992 wcarchive.cdrom.com.ftp-data > www.56041: S 3206128389:3206128389(0) win 16384 <mss 1460> [tos 0x8]
21:58:33.220232 www.4907 > wcarchive.cdrom.com.ftp: P 70:72(2) ack 196 win 17409 (DF) [tos 0x10]
21:58:33.596119 wcarchive.cdrom.com.ftp > www.4907: . ack 72 win 17520 [tos 0x10]
21:58:39.757813 www.4907 > wcarchive.cdrom.com.ftp: FP 72:78(6) ack 196 win 17520 (DF) [tos 0x10]
21:58:39.759171 www.49405 > wcarchive.cdrom.com.ftp-data: R 1:1(0) ack 608 win 16914 (DF)
21:58:44.385844 wcarchive.cdrom.com.ftp-data > www.56041: S 3206128389:3206128389(0) win 16384 <mss 1460> [tos 0x8]
21:58:53.220517 www.4907 > wcarchive.cdrom.com.ftp: FP 70:78(8) ack 196 win 17520 (DF) [tos 0x10]
21:58:53.605805 wcarchive.cdrom.com.ftp > www.4907: . ack 79 win 17514 [tos 0x10]
21:58:53.606928 wcarchive.cdrom.com.ftp > www.4907: P 196:210(14) ack 79 win 17520 [tos 0x10]
21:58:53.607022 wcarchive.cdrom.com.ftp > www.4907: F 210:210(0) ack 79 win 17520 [tos 0x10]
21:58:53.607362 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
21:58:53.607465 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
21:58:55.530000 wcarchive.cdrom.com.ftp > www.4907: FP 196:210(14) ack 79 win 17520 [tos 0x10]
21:58:55.530308 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
21:58:58.734179 wcarchive.cdrom.com.ftp > www.4907: FP 196:210(14) ack 79 win 17520 [tos 0x10]
21:58:58.734461 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
21:59:05.122030 wcarchive.cdrom.com.ftp > www.4907: FP 196:210(14) ack 79 win 17520 [tos 0x10]
21:59:05.122345 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
21:59:09.916944 wcarchive.cdrom.com.ftp-data > www.56041: S 3206128389:3206128389(0) win 16384 <mss 1460> [tos 0x8]
21:59:17.862651 wcarchive.cdrom.com.ftp > www.4907: FP 196:210(14) ack 79 win 17520 [tos 0x10]
21:59:17.862933 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
21:59:41.950921 wcarchive.cdrom.com.ftp > www.4910: P 1660:1715(55) ack 61 win 17520 [tos 0x10]
21:59:42.061282 www.4910 > wcarchive.cdrom.com.ftp: . ack 1715 win 17520 (DF) [tos 0x10]
21:59:43.456370 wcarchive.cdrom.com.ftp > www.4907: FP 196:210(14) ack 79 win 17520 [tos 0x10]
21:59:43.456637 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
22:00:34.617776 wcarchive.cdrom.com.ftp > www.4907: FP 196:210(14) ack 79 win 17520 [tos 0x10]
22:00:34.618280 www.4907 > wcarchive.cdrom.com.ftp: R 2650612540:2650612540(0) win 0
22:00:42.867645 www.4910 > wcarchive.cdrom.com.ftp: P 61:67(6) ack 1715 win 17520 (DF) [tos 0x10]
22:00:43.363482 wcarchive.cdrom.com.ftp > www.4910: . ack 67 win 17514 [tos 0x10]
22:00:43.363925 wcarchive.cdrom.com.ftp > www.4910: P 1715:1729(14) ack 67 win 17520 [tos 0x10]
22:00:43.364027 wcarchive.cdrom.com.ftp > www.4910: F 1729:1729(0) ack 67 win 17520 [tos 0x10]
22:00:43.364592 www.4910 > wcarchive.cdrom.com.ftp: . ack 1730 win 17520 (DF) [tos 0x10]
22:00:43.364870 www.4910 > wcarchive.cdrom.com.ftp: F 67:67(0) ack 1730 win 17520 (DF) [tos 0x10]
22:00:44.050686 wcarchive.cdrom.com.ftp > www.4910: . ack 68 win 17520 [tos 0x10]
help
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