Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

asa 5510 debug ipsec with packet-tracer or capture, what is the path


I have tunnel s2s via ipsec. On my asa i have inside and outside interface. My LAN are 192.168.10.x, Remote LAN 192.168.20.x I try to debug problems with connection which comes, initialized from remote site to my ASA. When ipsec packet arrives to my ASA, first interface is outside and next is inside ? Can i see packets from 192.168.20.x ? Which interface is first i should see packet from 192.168.20.x in packet-tracer or in capture. From inside to outside all is clear

thx for explanation packet path :)


Re: asa 5510 debug ipsec with packet-tracer or capture, what is

The packet-tracer command lets you do the following:

•Debug all packet drops in production network.

•Verify the configuration is working as intended.

•Show all rules applicable to a packet along with the CLI lines which caused the rule addition.

•Show a time line of packet changes in a data path.

•Inject tracer packets into the data path.

The packet-tracer command provides detailed information about the packets and how they are processed by the security appliance. In the instance that a command from the configuration did not cause the packet to drop, the packet-tracer command will provide information about the cause in an easily readable manner. For example if a packet was dropped because of an invalid header validation, a message is displayed that says, "packet dropped due to bad ip header (reason)."