If you are running FTD code on your ASA, then all interfaces will have security level 0 by default and this can't be edited, controlling traffic is based on the ACP (access control policy) rules that you setup from your FMC and assign/deploy to your ...

For custom snort rules you can check the following (The idea is the same, but the locations are a bit different, but mainly you would use the GUI provided editor or upload the custom rules into the FMC and enable them in your Intrusion rules) and syn...

Try the following from the chassis CLI it should have the information that you are looking for connect fxos show interface transceiver details