Really, the only tools in the OSS sector that ive seen are snort (yeah!)
and the newer ntop that does stats on *everything*.  The web-based ntop
stuff is pretty damned amazing.  Nice to get a picture of what traffic
is going on.

Otherwise, theres allways RealSecure and NFR. :P  But those cost too
much.  I think a well configured snort machine, with somehting like
cflowd/flowscan (woot! I found a open relay on a network with that combo
last week after it flooded a t1 with SMTP traffic) or ntop to determine
traffic after the fact.

* Austad, Jay <austad at marketwatch.com> [001231 20:10]:
> Isn't portsentry primarily designed just to react to portscans only?  I
> don't think it will detect modified files or send alerts about attempted
> exploits.
> 
> Portsentry is a good tool though.  It'll generate ipchains rules to block
> the ip of a host which is scanning you.  I have a friend who runs it at the
> dorms at the U of MN.  He gets scanned ALOT.  Someone broke into his box
> last year and was saturating a DS3 with his box doing a DoS against some
> other site.   
> 
> Jay
> 
> 
> > -----Original Message-----
> > From: grey Moon-Wolf [mailto:mtsqph at yahoo.com]
> > Sent: Sunday, December 31, 2000 5:43 PM
> > To: tclug-list at lists.real-time.com
> > Subject: Re: [TCLUG] Linux Intrustion Detection?
> > 
> > 
> > 
> > --- Bob Tanner <tanner at real-time.com> wrote:
> > > Anyone have a recommendation on intrustion detection
> > > software for linux?
> > 
> > Portsentry... check out Nov/Dec 2000 issue of Maximum
> > Linux, might be a bunch of meatballs but they have
> > provided some pretty decent software... The issue
> > deals with security matters... found it a good read.
> > And the free CD had some interesting downloads.
> > Manuel.
> > 
> > __________________________________________________
> > Do You Yahoo!?
> > Yahoo! Photos - Share your holiday photos online!
> > http://photos.yahoo.com/
> > _______________________________________________
> > tclug-list mailing list
> > tclug-list at lists.real-time.com
> > https://mailman.real-time.com/mailman/listinfo/tclug-list
> > 
> _______________________________________________
> tclug-list mailing list
> tclug-list at lists.real-time.com
> https://mailman.real-time.com/mailman/listinfo/tclug-list

-- 
Scott Dier <dieman at ringworld.org> #linuxos at irc.openprojects.net
http://www.ringworld.org/  finger:dieman at destiny.ringworld.org

"Kupo, kupkup, kupopo...  Po... Kupo!?  KUPOPO!!!
	<Chomp chomp> Kupooo."
		-Moguta (FFIX)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 232 bytes
Desc: not available
Url : http://shadowknight.real-time.com/pipermail/tclug-list/attachments/20010101/dfd7800a/attachment.pgp