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No matching connection for ICMP error message.

CiscoBrownBelt
Level 6
Level 6

See diagram attachment.

I receive the following error in the logs of the ASA:

 

no matching connection for ICMP error message: icmp src Inside: 10.10.10.1 dst identity: 10.10.10.251 (type 3 code 13) on Inside interface. Original payload: icmp src 10.10.10.251 dst 10.10.10.1 (type 0, code 0)

 

So basically I am pining from the internal side (left router/10.10.10.1) to internal IP of FW (10.10.10.251).

I added a network object (Internal Lan) to allow all 192 address so I entered 192.168.0.0 /16 and applied this to allow ICMP to the internal and external interfaces of the FW. Obviously it is not working. Can someone point me in right direction?

18 Replies 18


So logs do show denies coming from the devices I ping from (all device except FW as shown in diagram), but I have entries to allow the anything on 192.168 (192.168.0.0 /16) in addition to the device IPs shown on diagram, but they still get denied. I added them as source and destinations and allowing icmp echo replies. Sound like anything I am missing?

On your diagram, what looks to be the inside interface of the FW has an IP address of 10.10.20.10.2 /24 - which is invalid, is that just incorrect on the diagram? You previously said the inside IP of the FW is 10.10.10.251.

 

You mention the 192.168.0.0/16 subnet, do you have a route on the FW to that network?

 

This will all become clearer tomorrow when we can have a look at the configuration of the ASA.

Sorry diagram is wrong - I have updated it and attached it.

FW is 10.10.20.2 and router g0/1 has ip 10.10.20.1.
Mistake again I meant to say 10.10 instead of 192.168.

Yes I have the following route on the FW: route inside 10.10.0.0 255.255.0.0 10.10.20.1 to point to the router mgmt. sub interface to get to any 10.10.X.X traffic as I will have more than 10.10.10.X subnets.

Forgot to attach.

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