On 06/04/2013 08:37 AM, termo meter wrote:
> Dear All,
> 
> I have question on how SEC doing pattern matching.
> 
> For example i have below logs from my firewall:
> 
> 5-23-2013 4:10:03 PM     UDP Traffic Received from 10.1.1.1:
> <163>May 23 2011 15:59:45: %ASA-3-10614: Deny inbound icmp src
> outside:10.10.0.63 dst outside:192.168.0.10 (type 8, code 0)
> 
> 5-23-2013 4:10:13 PM     UDP Traffic Received from 10.1.1.1:
> <163>May 23 2011 15:59:55: %ASA-3-10614: Deny inboundicmp src
> outside:192.168.0.63 dst outside:192.168.0.10 (type 8, code 0)
> 
> 5-23-2013 4:10:08 PM     UDP Traffic Received from 10.1.1.1:
> <164>May 23 2011 15:59:50: %ASA-4-31305: No matching connection for ICMP
> error message: icmp src inside:10.16.1.17 dst outside:10.10.0.223
> 
> 5-23-2013 4:10:08 PM     UDP Traffic Received from 10.1.1.1:
> <162>May 23 2011 15:59:50: %ASA-2-10601: Inbound TCP connection denied
> from 10.1.0.62/80 to 192.168.0.11/10585 flags FIN ACK  on interface outside
> 
> 5-23-2013 4:10:15 PM     UDP Traffic Received from 10.1.1.1:
> <162>May 23 2011 15:59:57: %ASA-2-10607: Deny inbound UDP from
> 10.10.51.59/57904 to 192.168.0.10/53 due to DNS Query
> 
> Let say i want to capture only denied logs, protocaol use icmp, and from
> this IP address 10.10.0.63 only.
> 
> When i use this conf:-
> 
> type=Single
> ptype=RegExp
> pattern=Deny\s\S+ icmp
> desc=$0
> action=write output.txt $0
> 
> it will capture this logs:-
> 
> 5-23-2013 4:10:03 PM     UDP Traffic Received from 10.1.1.1:
> <163>May 23 2011 15:59:45: %ASA-3-10614: Deny inbound icmp src
> outside:10.10.0.63 dst outside:192.168.0.10 (type 8, code 0)
> 
> 5-23-2013 4:10:13 PM     UDP Traffic Received from 10.1.1.1:
> <163>May 23 2011 15:59:55: %ASA-3-10614: Deny inboundicmp src
> outside:192.168.0.63 dst outside:192.168.0.10 (type 8, code 0)
> 
> How i can set SEC to capture logs only from specifics IP address?

Include the address in your regular expression. Something like (untested):

pattern=Deny\s\S+ icmp.*outside:10\.10\.0\.63

Eric.



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