Question about ASA IPSEC peer monitoring

Sascha E. Pollok sp at iphh.net
Thu Nov 4 06:32:49 EDT 2021


Okay I think I solved this one myself.

 > I am querying a Cisco ASA with SNMP for IPSEC peers I am using
 > 1.3.6.1.4.1.9.9.171.1.2.3.1.7 from CISCO-IPSEC-FLOW-MONITOR-MIB which shows all peer
 > addresses. However, one is missing. And the only difference I find is that this one is
 > using NAT-T. Is anyone aware of a limitation in this MIB and where I could find that
 > peer instead?
 >
 > ASA is running 9.8(4)32.

The information about an IPSEC/NAT-T peer I was able to find the peer in 
CISCO-REMOTE-ACCESS-MONITOR-MIB which a peer ID that is offset +1 from the remaining 
information about that peer in CISCO-IPSEC-FLOW-MONITOR-MIB with an RFC1918 IP as Peer IP 
that doesn't match anything in the config. However, the corresponding values (e.g. for 
authMethod) in CISCO-IPSEC-FLOW-MONITOR-MIB do not really make sense but I can ignore that 
for now.

Does what I have found make sense? Anyone care to comment?

Thank you!
Sascha


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