Specifications

MyPBX U5XX Administrator's Guide
www.yeastar.com Page 140
Set up the firewall rule to allow the public IP address of remote extensions to
access MyPBX server. e.g.110.111.132.6, the configurations could be as below:
Name: Remote Extension
Protocol: BOTH
Port: 1:65535
IP: 110.111.132.6/255.255.255.255
Action: Accept
Figure B-14
Step 4. Configure auto blacklist rules
Auto blacklist rules: the Server would add the IP address to the blacklist
automatically if the number of the packets it sends exceed the rule you
configured.
Add two auto blacklist rules for port: 5060.
Rule No.1:
Port: 5060
Protocol: UDP
IP Packets: 120
Time Interval: 60 seconds
Figure B-15