Billion BiPAC 8900X R3 User Manual page 171

Exceptional Rule Range
IP Address Range: Specify the IP address range; IPv4 address range can be supported.
Click Add to add the IP Range.
For instance, if user wants to block IP range of 172.16.1.102-172.16.1.106 from accessing your
PPTP and L2TP server, you can add this IP range and valid it.
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