Re: FATAL ERROR: Please activate spp_conversation before trying to ac tivate spp_portscan2

[Matt Kettler <mkettler () evi-inc com>]

At 10:24 AM 9/29/2003, Peters, Michael D. wrote:
> I would like to turn the portscan feature on. This is what I have in the
> config file enabled.
>
> preprocessor portscan: $HOME_NET 5 3
> /var/snort/portscan/home/home-portscan.log
> preprocessor portscan-ignorehosts:  xxx.xxx.xxx.xxx/32 xxx.xxx.xxx.xxx/32
> preprocessor portscan2: scanners_max 256, targets_max 1024, target_limit 5,
> port_limit 20, timeout 60
> preprocessor portscan2-ignorehosts: xxx.xxx.xxx.xxx/12
>
> I get this error in syslog: "FATAL ERROR: Please activate spp_conversation
> before trying to activate spp_portscan2"
>
> Can someone please point out to me what I am doing wrong or missing in the
> config?

Well, I hate be blunt, but the error message tells you exactly what to do, 
turn on spp_conversation.

What more explanation do you need?

The portscan2 preprocessor REQUIRES the spp_conversation preprocessor. It 
cannot work without it. You don't have it enabled, so snort fails.

Look for it in the sample spp_conversation lines in the snort.conf that 
comes in the snort tarball and enable it. Make sure it comes before 
portscan2 in your snort.conf. 



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