I have enabled decryption on a small group for testing purposes. I have a simpel 2 rule setup, first exluding financial, health and custom white listed and then decrypt everything else.
I have a hard time finding out why the same site in the same browser on different pc's behave differently. For example my colleague got ERR_SSL_PROTOCOL_ERROR on https://reddit.com with chrome while at the same time it was ok on my pc, also with chrome. How do I examine those kinds of errors?
Further, I lack more how to's and best practises in general regarding ssl decryption. Like how you should maintain the firewalls list of trusted CA's, both changed and revoked CA's.
Any tip you have about seting it up and adminstering ssl decryption is appreciated!
Refer to the following document for configuing decrytion.
We run 6.0.10 on 3020 in passive/active HA.
There are some helpful stuff in that link but most of it for the setup.
Could there be mismatches between certs in windows (7/8) and in palo?
A couple of things from my own experience with testing decryption (6.0.14 on the GWs) -
- After changing the decryption policy it can need to rebuild the certificate cache as sites are accessed, so you are best to leave off testing for 5 mins or so otherwise you can get odd results
- Browser cache can also produce different results (yes - I know SSL results shouldnt be cached, just passing on what I found) so if you get odd results be sure to CTL + F5
Might help ?
Do all the clients have the trusted cert that was uploaded into the PAN? I know we perform this and chose and internal cert since it was already deployed to all of our clients. We then had to export a cert to the PAN that allowed the PAN to be a subordinate to the CA so it could genereate certs on the fly for the ssl decrypt.
You may want to look at:
I know this is for 7.0.2 but the question is if this potential bug may have found it's way into newer versions of 6.0.x and 6.1.x.
You could try upgrading to 6.0.11 and see if it helps as well.
Click Accept as Solution to acknowledge that the answer to your question has been provided.
The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!
These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!
The Live Community thanks you for your participation!