Strange Firewall Access Control Behaviour
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Strange Firewall Access Control Behaviour
Trying to restrict access of a specific port to a specific IP address. Set up these rules:
ID Name Source Destination Source Destination Policy Service Type Direction Effective Time
Network Network
2 VoIP_Admin VoIP_Vendor PBX --- --- Allow PBX_Admin WAN IN Any
3 Block_VoIP_Admin !VoIP_Vendor PBX --- --- Block PBX_Admin WAN IN Any
It worked for a few days then suddenly it just stops working. The port became open to all!
I changed the rule #3 to 'Allow' then back to 'Block'. It works again!!