ACL's in Cisco 5520 Firewall

amitabhg
amitabhg used Ask the Experts™
on
Hi

We have nearly 58K ACL lines in our ASA i want to remove unnecessary all ACL's from firewall is there any best way to monitor these ACLs and remove....??

what is the limit of ACL's in ASA 5520 (ver 8.2)

Thanks in advance  
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Top Expert 2011
Commented:
You can check on hit counters to see if any of the lines are inactive.

I dont think there is a limit for access-lists lines, but you can also check CPU, since access-lists are CPU intensive
Ernie BeekSenior infrastructure engineer
Top Expert 2012
Commented:
There is no hard limit to the number of ACL's or ACE's in an ASA. It depends on the amount of memory to hold them and the CPU capacity to process them. If these are used to the max the firewall might start to get issues like dropping packets.

So you would like to monitor the rules to see how often they get hit? With show access-list you get to see the hitcount per ACE.

Author

Commented:
apart from seeing hit count is there any other way to monitor ACL's.
Ernie BeekSenior infrastructure engineer
Top Expert 2012
Commented:
Well, in the newer ASDMs versions you can also see the hitcount. I'm stall assuming that is what you want to monitor.

Author

Commented:
TanQ erniebeek.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial