I need to create a custom application based on the LOGIN string sent to an IMAP server (Office 365) via port 993 (TLS/SSL encrypted) to differentiate it from other O365 traffic. Tech_Note-Creating_Custom_Signatures-RevE.pdf I should be able to match on the imap-req-first-param context but the fw is detecting the traffic as imap. I have configured and tested SSL decryption okay and am outputting to a SSL decryption mirror to confirm the unencrypted data being sent.
The custom application is a child of the imap application (I've tried it as no parent app as well, didn't work), and has default port tcp/993 set. I've got one signature:
Scope: session (I tried transaction, didn't work either)
Ordered condition match is off
OR condition - Operator Pattern Match
Context - imap-req-first-param
Pattern is part of our domain name, as is (no \'s or brackets)
No qualifiers, tho I've tried with imap-req-cmd = LOGIN but it didn't help.
Any ideas? Thanks in advance 🙂
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