Linux Netfilter discussions
 help / color / mirror / Atom feed
From: "James Miller" <jimm@simutronics.com>
To: netfilter@lists.netfilter.org
Subject: Dropping SYN with FIN flag set
Date: Tue, 21 Oct 2003 10:47:22 -0500	[thread overview]
Message-ID: <NDBBKABJBJCIJNAELLKEEEDOJDAA.jimm@simutronics.com> (raw)

Hi folks.. sorry if this is a really dumb question.. please don't flame me
too much.

Nessus is always alerting on  "Remote host does not discard TCP SYN packets
which have the FIN flag set".  What is the best way to close up this hole?
Is there a global rule I could setup or do I need to set this on a per rule
basis?

something like '-p tcp --tcp-flags SYN,FIN -j DROP'





Thanks,
Jim




             reply	other threads:[~2003-10-21 15:47 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-21 15:47 James Miller [this message]
2003-10-21 16:39 ` Dropping SYN with FIN flag set Chris Brenton
2003-10-21 17:51   ` Jeffrey Laramie
2003-10-21 18:56     ` Chris Brenton
2003-10-21 19:29       ` Tom Marshall
2003-10-21 19:47         ` Chris Brenton
2003-10-21 20:35       ` Jeffrey Laramie
2003-10-21 21:35         ` Chris Brenton

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=NDBBKABJBJCIJNAELLKEEEDOJDAA.jimm@simutronics.com \
    --to=jimm@simutronics.com \
    --cc=netfilter@lists.netfilter.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox