Watchguard Wireless Router Betriebsanweisung PDF herunterladen (Seite 22)

Introduction to Network Security

8 WatchGuard Firebox X Edge

Firewalls

A firewall divides your internal network from the Internet to

decrease risk from an external attack. We refer to the computers and

networks on the Internet as the external network. The computers on

the internal side of the firewall are protected. We refer to these as

trusted computers. The figure below shows how a firewall divides

the trusted network from the Internet.

Firewalls let users create access policies for the Internet traffic that

goes to the computers they protect. They can also control which ser-

vices or ports the protected computers can use on the Internet (out-

bound access). Many firewalls have sample security policies and

users can select the policy that is best for them. With others —such

as the Firebox® X Edge— the user can customize these policies.

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Watchguard Wireless Router Betriebsanweisung Seite 22