Re: Only TCP packets towards the Snort host trigger alerts

[JJC <cummingsj () gmail com>]

Out of curiosity, are you running with -k none ?


On Tue, Nov 13, 2012 at 7:00 AM, Rennhard Marc (rema) <rema () zhaw ch> wrote:

> Dear list members
>
> I'm using Snort for teaching purposes and just updated to Ubuntu 12.04,
> which implied a Snort update from 2.8.5 to 2.9.2.
>
> The new version shows a different behaviour with respect to TCP packet
> alerting. Using the rule
>
> alert tcp any any -> any any (msg:"ALL"; sid:9999999;)
>
> and communicating over TCP to a service running on the same host as Snort
> shows (alerted on) all packets in both directions with Snort 2.8.5.  But
> with the new Snort version (2.9.2), only packets towards the server
> generate an alert. With UPD traffic, all packets are alerted on in both
> directions with both versions.
>
> Has anything changed with respect to alerting on TCP packets between these
> two versions?
>
> Thanks for any help,
> Marc
>
>
>
> ------------------------------------------------------------------------------
> Monitor your physical, virtual and cloud infrastructure from a single
> web console. Get in-depth insight into apps, servers, databases, vmware,
> SAP, cloud infrastructure, etc. Download 30-day Free Trial.
> Pricing starts from $795 for 25 servers or applications!
> http://p.sf.net/sfu/zoho_dev2dev_nov
> _______________________________________________
> 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users
>
> Please visit http://blog.snort.org to stay current on all the latest
> Snort news!
------------------------------------------------------------------------------
Monitor your physical, virtual and cloud infrastructure from a single
web console. Get in-depth insight into apps, servers, databases, vmware,
SAP, cloud infrastructure, etc. Download 30-day Free Trial.
Pricing starts from $795 for 25 servers or applications!
http://p.sf.net/sfu/zoho_dev2dev_nov

_______________________________________________
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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!