[Oisf-users] Max number of flows/flowints

Renato Fontana renatocfontana at gmail.com
Fri Apr 28 13:15:02 UTC 2017

Quick question regarding flowbit usage.
Does suricata loads rules with missing flowbit:set and/or flowbit:isset?

I know snort outputs warnings when one verification is missing.
flowbits key 'X' is set but not ever checked. (flowbits:isset)
flowbits key 'Y' is checked but not ever set. (flowbit:set)

I'm not sure if these rule are still loaded when running Suricata starts or
if they are skipped.


2016-10-18 11:11 GMT+02:00 Victor Julien <lists at inliniac.net>:

> On 18-10-16 07:56, Amin Saba wrote:
> > Are there any artificial limits on the maximum number of flows an
> > instance of suricata can handle?
> The only limit is your flow.memcap setting or your available memory,
> which ever comes first.
> Performance will depend on your hash table size.
> > What about the number of flowbits/flowints defined over those flows?
> This is only limited by available memory.
> --
> ---------------------------------------------
> Victor Julien
> http://www.inliniac.net/
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