About AndresCornetOliva

AndresCornetOliva · 04-28-2020

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...

AndresCornetOliva · 01-29-2024

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?

AndresCornetOliva · 01-09-2024

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.

AndresCornetOliva · 01-04-2024

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?

AndresCornetOliva · 05-05-2020

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...

Member Since	‎03-17-2020 11:41 AM
Date Last Visited	‎09-11-2026 02:38 PM
Posts	6

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SSL Policy error "CLIENT_CERT_NOT_SUPPORTED (0xb000346b)"

Re: Firepower FTD syslog logs increased 10x late last week.

Re: Disable ICMP inspection on FTD 7.x for asymmetric routes

Re: Disable ICMP inspection on FTD 7.x for asymmetric routes

Re: SSL Policy error "CLIENT_CERT_NOT_SUPPORTED (0xb000346b)"