From: Peteris Krumins <newsgroups@lf.lv>
To: netfilter@lists.netfilter.org
Subject: psd and active ftp mode
Date: Wed, 9 Apr 2003 03:22:10 +0300 [thread overview]
Message-ID: <136459744507.20030409032210@lf.lv> (raw)
hello,
i was just testing psd match and w/ ftp active mode.
I created 10000 files on the ftp server and set my ftp client to
active mode and let it download those files while having
`iptables -A INPUT -p tcp -m psd -j REJECT --reject-with tcp-reset`
(with psd default threshold/weigh values).
The psd matched 3136 packets.
Ftp server went mad issuing:
425: Unable to build data connection: Connection refused
This means i cannot relay on psd and block 'possible portscans'?
Any suggestions?
The same would happen, if i created some rules with limit match..
P.Krumins
next reply other threads:[~2003-04-09 0:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-09 0:22 Peteris Krumins [this message]
2003-04-09 2:18 ` psd and active ftp mode netfilter
2003-04-09 11:03 ` Martijn Lievaart
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