What is the best configuration of the firewall

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1

What is the best configuration of the firewall; all the lans pass thru the firewall… how

2

I don’t know if I understand right…

In firewall settings you may disable allowing traffic to internet.

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Then you can allow specific clients/networks to browse.

3

The best ways to configuration of the firewall are -

  1. Allow specific traffic
  2. Specify source IP addresses
  3. Specify the destination IP address