ZyXEL Communications GS2210 Series - What Could Go Wrong

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5.3.3 What Could Go Wrong?
1 If access to servers or the local gateway is no longer possible
after enabling Anti-Arpscan, make sure that only ports
directly connected to hosts or Wireless Access Points are
“untrusted”. Ports to servers and the local gateway should be
“trusted”.
2 If all hosts connected through a Wireless Access Point can no
longer reach the local gateway, check whether the port to
the Wireless Access Point has changed to the err-disable
state in Advance Application > Anti-Arpscan. If so, consider
increasing the Port Threshold in Advance Application >
Anti-Arpscan > Configure.