Keep Alive; Advance; Filter - Caimore CM520-86 User Manual

4.1.5 Keep Alive

It's a feature to detect the state of data transmission channel between router and Internet
in every few minutes automatically. If it detects an abnormal network state, router will
restart and re-dial automatically. This is used to achieve a function that router will keep
online all the time even if without administrator's monitoring.
Please according to practical situation, type a reachable IP address in "Destination IP
1/2". "Check Interval" and "Check Timeout" can be left in default value.
Notice:
a. If this function has been closed, then the router will not detect the network state, so
router will not restart and re-dial even if it's offline.
b. The destination IP should be stable and reachable for router, for if destination is
unstable then it'll cause the router to reboot constantly.
c. This function is used for public as default, so in private network, destination IP
should be modified.

4.2 Advance

4.2.1 Filter

It mainly used to filter wireless network data transmitting and receiving, to prevent
illegal and invalid data from gateway. It admits and refuses computers of LAN connected
with gateway to get access to WAN, or admits and refuses WAN to get access to LAN
connected with gateway.
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