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I'm having a problem with a SSL Policy, which I use to analyze SMTPS traffic with a Firepower sensor managed by FMC. I have my own mail server inside my LAN, so I want to analyze incoming SMTPS traffic with the Decrypt (Known Key) method, as I own th...
Hi!
Did you find anything? I'm experiencing the same thing and on the same FTD version. I've also seen some increased delay in connections, that I think may be related with this. Did you find the reason/solution to this increasing events?
Hi @enewburn1. For the record, the way to achieve this is by executing the following command from the ftd's cli:
> configure inspection icmp disable
It worked for me, and it can be done despite the ftd being managed by fmc.
Hi, I'm in a similar situation. Were you able to disable icmp inspection on FTD?? Did you use flex-config? And most important, did it solved the issue of asymmetric traffic?
Hi, thanks for the answer. Apparently it would be a problem of TLS handshake. The server is trying to perform something called client-authenticated TLS, wich wouldn't be supported by the FMC. I'm still searching in order to confirm it, but it's the m...
