Recently I have come across a scenario that palo alto was dropping TCP SYN packets which have ECN and CWR bits set. upon checking the global counter, i have seen that the drop reason was 'process owner message err, no predict'. anybody have seen this?. PA doesn't support SYN packets with ECN and CWR set ?..
Once I disable this enhancement in windows using the command 'netsh int tcp set global ecncapability=disabled', the session is getting established and the thinks are working fine.
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 LIVEcommunity as a whole!
The LIVEcommunity thanks you for your participation!