Snort mailing list archives

Re: RE : overloaded system after upgrading


From: Yossi Asayag <yasayag () gmail com>
Date: Tue, 13 Dec 2011 12:20:07 +0200

 Hi Rmkml,

thanks for responding.
I walked step by step matching the old config file to the new snort version (running the snort after every step).
As soon as I changed the links of the dynamicpreprocessor and dynamicengine

-- old config --
dynamicpreprocessor file /usr/local/lib/snort/dynamicpreprocessor/libsf_ssl_preproc.so
dynamicengine /usr/local/lib/snort/dynamicengine/libsf_engine.so

--new config --
dynamicpreprocessor file /usr/local/snort_2.9.1.2/lib/snort/dynamicpreprocessor/libsf_ssl_preproc.so dynamicengine /usr/local/snort_2.9.1.2/lib/snort/dynamicengine/libsf_engine.so

the machine goes wild; the memory and the cpu went high and a lot of packet were dropped.

Nothing else were changed or added.

I haven't been dealing with the daq yet! could it have something to do with it?!

tnx


yossi




On 12/12/2011 04:56 PM, rmkml () yahoo fr wrote:
Hi Yossi,
Maybe upgrade loss parameters like bpf filters ?
Could you send previous and new snort configs ?
Could you start old and new with verbose mode please ?
Regards
Rmkml



a e'crit :

     Hi again

after having no response I thought that the following describe will help getting more information... The preprocessors which I use are: frag3, stream5, prefmonitor, http_inspact, ssl

The memcap from frag3 and streem5 were reduced to less then 10% from the value which worked fine in the last version. AND a lot of packets are still been dropped. The cpu works on 100%.

I'd glad to have some help bringing my system back to the optimal performance.

tnx

yossi




-------- Original Message --------
Subject:        overloaded system after upgrading
Date:   Mon, 12 Dec 2011 12:03:33 +0200
From:   Yossi Asayag <yasayag () gmail com>
To:     snort-users () lists sourceforge net



Hallo there,

after upgrading my snort version into the new version 2.9.1. the machine
is overloaded and drop a lot of entities even though I´v matched the new
config file (inserted the values from the recent config file - which
worked perfectly). Have someone an idea what could be the reason and how
can I bring my system back to the optimal performance?

Thanks

Yoas




------------------------------------------------------------------------------
Systems Optimization Self Assessment
Improve efficiency and utilization of IT resources. Drive out cost and 
improve service delivery. Take 5 minutes to use this Systems Optimization 
Self Assessment. http://www.accelacomm.com/jaw/sdnl/114/51450054/
_______________________________________________
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

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

Current thread: