Snort mailing list archives
Re: Negation while still using source ports.
From: Dragos Ruiu <dr () kyx net>
Date: Mon, 10 Sep 2001 15:21:14 -0700
What you're trying to do is a little beyond snort's address lists. Your rule is actually providing an extra field to the snort rule parser that is confusing it. Try using just the negated address list and not $EXTERNAL_NET. cheers, --dr On Mon, 10 Sep 2001, Vjay LaRosa wrote:
Hello, I have been fooling around with this rule all day and I was wondering if some one could be so kind as to help me out. I want to ignore my DNS servers in this alert. Here is the rule. alert tcp ![X.X.X.X,XXX.XXX.XXX.XXX] $EXTERNAL_NET 53 -> $HOME_NET :1023 (msg:"MISC TCP source port 53 to <1024"; flags:S; reference:arachnids,07; classtype:bad-unknown; sid:504; rev:2;) When I take out the source port it seems to work. Is there another way I should be doing this? Thanks! vjl -- V.Jay LaRosa EMC Corporation Systems Administrator 171 South Street (508)435-1000 ext 14957 Hopkinton, MA 01748 (508)497-8082 fax www.emc.com
---------------------------------------- Content-Type: text/html; name="unnamed" Content-Transfer-Encoding: 7bit Content-Description: ---------------------------------------- -- Dragos Ruiu <dr () dursec com> dursec.com ltd. / kyx.net - we're from the future gpg/pgp key on file at wwwkeys.pgp.net or at http://dursec.com/drkey.asc _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Negation while still using source ports. Vjay LaRosa (Sep 10)
- Re: Negation while still using source ports. Dragos Ruiu (Sep 10)
- NULL *froot ? Frank Reid (Sep 27)
- Re: Negation while still using source ports. Phil Wood (Sep 10)
- Re: Negation while still using source ports. Erek Adams (Sep 10)
- Re: Negation while still using source ports. Dragos Ruiu (Sep 10)