RES: spp_stream4: EVASIVE RST detection

[Marcus Vinícius de Melo Rocha <marcus () limiar com br>]

> > preprocessor stream4 noalerts
> >                      ^^^^^^^^--- This should do the trick.
> >
> > -bill
> That will kill all stream4 related alerts...I wish there were a way to
> selectively choose which alerts to show and which to toss.  Or am
> I totally
> off base and the alerts we are discussing would be the only
> alerts you would
> see from the stream4 pp?
>
> -Steve

Hi,

I was reading the source code for stream4 preprocessor, and I found the
following alerts:
    - "spp_stream4: DATA ON SYN detection"
    - "spp_stream4: NMAP FINGERPRINT (stateful)"
    - "spp_stream4: EVASIVE RST detection"
    - "spp_stream4: Possible RETRANSMISSION"
    - "spp_stream4: WINDOW VIOLATION detection"
    - "spp_stream4: STEALTH ACTIVITY (unknown) detection"
    - "spp_stream4: STEALTH ACTIVITY (Vecna scan) detection"
    - "spp_stream4: STEALTH ACTIVITY (nmap XMAS scan) detection"
    - "spp_stream4: STEALTH ACTIVITY (NULL scan) detection"
    - "spp_stream4: STEALTH ACTIVITY (SYN FIN scan) detection"
    - "spp_stream4: STEALTH ACTIVITY (FIN scan) detection"
    - "spp_stream4: STEALTH ACTIVITY (SAPU scan) detection"
    - "spp_stream4: STEALTH ACTIVITY (Full XMAS scan) detection"

For now, I'm getting hundreds of "spp_stream4: Possible RETRANSMISSION",
some "spp_stream4: WINDOW VIOLATION detection", and some "spp_stream4:
EVASIVE RST detection". I'm studing the logs to find out if it's just false
positive.

Hope it helps.
Marcus


_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
http://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users