This issue is fixed in PCS 9.1R12.1
which can be downloaded from https://my.pulsesecure.net. The documentation can be found here
- Customers who do not use IKEv2 feature can Block UDP Port 500 on their firewalls as a workaround so that IKEv2 packets do not reach PCS External/Internal Ports.
- Blocking UDP Port 500 will not affect VPN users using SSL/ESP Transport Modes.
If you still face the issue, please raise a support case with us.