WFilter can not prevent users to change their ip addresses, however, when ip-mac binding is enabled, certain computers internet access will be blocked if their ip/mac do not match the ip-mac binding settings. Please also notice:
- IP-MAC binding can not work in a multi-segments network.
- IP-MAC binding can not work for un-monitored computers.
- In "By IP Address" monitoring mode, a MAC address can has several IP addresses if you're using a DHCP server to allocate ip addresses dynamically. You can only bind the MAC address to the last IP address.