[Snort-users] max flowbits fatal errors

Kungu Panda kungupanda at ...11827...
Thu Oct 7 15:55:12 EDT 2010

Thank you Russ, I very much appreciate the response.

Yes, I am building from source.

I will disable several of the lower-priority rules until this can get
patched.  This will be somewhat painful as our dataflows are pretty unique
and, obviously, we use flowbits heavily.

Will there be a specific bug id# that I can watch-out for?


On Thu, Oct 7, 2010 at 7:23 PM, Russ Combs <rcombs at ...1935...> wrote:

> Looks like that option is broken.  I'll create a bug for it.
> Are building from source?
> You are so close to the limit, are there any rules you can disable?
> On Thu, Oct 7, 2010 at 9:55 AM, Kungu Panda <kungupanda at ...11827...> wrote:
>> I am running into the following fatal error when starting snort:
>>   "ERROR: FLOWBITS: The number of flowbit IDs in the current ruleset (513)
>> exceed the maximum number of IDs that are allowed (512)."
>>   "Fatal Error, Quitting."
>> I tried setting the global configuration option in snort.conf:  "config
>> flowbits_size: 768"  which really resulted in the really confusing error:
>>   "ERROR: /etc/snort/snort.conf  Invalid argument to 'flowbits_size':
>> 768.  Must be a positive integer and less than 256."
>> Running on snort v2.8.6.1.
>> Tried finding help in the snort manual and README.flowbits with no
>> success.
>> Also did not find any command-line options that would help.
>> Can someone point me in the right direction regarding bumping-up the
>> maximum number of flowbits IDs ?
>> And what exactly does the "config flowbits_size: nnn"  configuration
>> option do ?
>> Thank you,
>> K.Panda
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