Specifications

MyPBX Standard Administrator Guide
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For example the public IP is 110.30.25.152; we can allow all ports for this
trusted IP.
Name: Remote
Protocol: BOTH
Port: 1:65535
IP: 110.30.25.152/255.255.255.255
Action: Accept
Figure 2-3
Note: Static public IP range needs to be configured here, if it’s dynamic IP
address that doesn’t belong to a range, there is no need to configure it, but
the “Drop All” in the next step should not be ticked. The IP blacklist rules will
help to protect MyPBX. We recommend getting public static IP for security
purpose.
Step4. Add common rules to accept the static public IP
range of VoIP provider.
The ports used to contact the SIP provider is 5060 and 10000-12000 by default,
if you have changed this port range, you can input it here by yourself.
For example, the IP address is 110.111.132.6, the configurations should be two
parts, one is for 5060, and the second is for RTP port: 10000-12000.
Allow registry port: 5060.