[Oisf-users] Trouble with Suricata and SSL VPN

Victor Julien lists at inliniac.net
Wed May 1 08:01:03 UTC 2013

On 04/30/2013 02:05 PM, Leonard Jacobs wrote:
> Yes.  It appears that the problem only occurs with SonicWALL Adventail SSL VPN. It is reported that connecting to it is slow and it disconnects as if a timeout occurs.  We have increased the number af-packet threads to 6 from 4 that was set yesterday and we changed the cpu cores setting in suricata.yaml from the default of 1.5 to 2. We are running an i7 processor which has 4 cores and 8 threads.

Does the disconnect interval relate to any of the flow-timeout values in
your yaml? If so you can try increasing those, or forcing a keep-alive
mechanism in the vpn to stay within the timeout values.



> -----Original Message-----
> From: Peter Manev [mailto:petermanev at gmail.com] 
> Sent: Tuesday, April 30, 2013 2:08 AM
> To: Leonard Jacobs
> Cc: oisf-users
> Subject: Re: [Oisf-users] Trouble with Suricata and SSL VPN
> On Mon, Apr 29, 2013 at 6:02 PM, Leonard Jacobs <ljacobs at netsecuris.com> wrote:
>> We are having a network latency problem using af-packet IPS mode when 
>> accessing SSL VPN to the point that SSL VPN disconnects.  What could 
>> be causing this problem?
>> We are using 4 threads with af-packet.  We are seeing the connection 
>> in http.log file.
>> Leonard
> Hi Leonard,
> Do you experience that (in this set up)  only with SSL VPN ?
> thanks
> --
> Regards,
> Peter Manev
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Victor Julien
PGP: http://www.inliniac.net/victorjulien.asc

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