CJ, On 09.10.20 15:09, Christopher J. Wolff wrote:
Dear Nanog;
Hope everyone is getting ready for a good weekend.� I�m working on a greenfield service provider network and I�m running into a security challenge.� I hope the great minds here can help.
Since the majority of traffic is SSL/TLS, encrypted malicious content can pass through even an �NGFW� device without detection and classification.
Without setting up SSL encrypt/decrypt through a MITM setup and handing certificates out to every client, is there any other software/hardware that can perform DPI and/or ssl analysis so I can prevent encrypted malicious content from being downloaded to my users?
Have experience with Palo and Firepower but even these need the MITM approach.� I appreciate any advice anyone can provide.
I think this most likely needs to develop into a bigger discussion, but TLS introspection will (and must, otherwise we would have big problems ) rely on a MITM setup. DNS- and reputation-based filtering was already mentioned, there is also this work on detecting malware aspects by TLS anomalies: https://www.imperial.ac.uk/media/imperial-college/faculty-of-engineering/com... I'm not aware whether there are service provider network-grade tools for this available though. Thanks, Matthias