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Remote Access with Visitor Mode set to use TCP port 444 no longer works after upgrading to R77.30 Technical Level
Symptoms
  • If Visitor Mode (located in 'Gateway/Cluster Object > VPN Clients > Visitor Mode Configuration') is configured to use port 444 (CP_SSL_Network_Extender), it can no longer connect after upgrading to R77.30.
  • fw ctl zdebug drop shows traffic to port 444 dropping on rule 0.
Cause

A new implied rule in R77.30 blocks unencrypted traffic on port 444. This causes the initial connection from the Remote Access client to be dropped.


Solution
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