I have a monitoring rule that checks the number of connections on the firewall using the following command:
show conn count
My results are always between 3,000 and 9,000.
A while back, I had an issue where all 130,000 connections were being used up. I configured a service policy to limit the number of connections between any two end points.
The commands I used were:
set connection per-client-max 20000 per-client-embryonic-max 20000
I'm monitoring the error logs and I'm noticing that my connection limit rule is being triggered on a regular basis. I receive the following message
Per-client connection limit exceeded 20000/20000 for output packet from x.x.x.x to x.x.x.x on interface outside
I'm confused as to the difference between the connections limited by my rule and the connections shown by "show conn count". Can anybody explain the difference between these connection metrics and why I never see any connections higher than 9,000 using "show conn count" yet I am seeing alerts stating that the firewall has reached 20000 connections?
My firewall is an ASA5510 running
Cisco Adaptive Security Appliance Software Version 8.0(4)
Device Manager Version 6.1(5)51