D-Link DFL-600 Manual page 45

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Firewall Settings − Port Filter Policy

The DFL-600 allows you to specify a range of TCP or UDP ports for

connections between computers on the WAN and computers on your LAN

that will be controlled. These TCP or UDP ports are entered on the Port

Filter page.

Transport Type

Protocol

This drop-down menu allows you to specify the

transport protocol that will be filtered by the

DFL-600. You can choose from the TCP, UDP,

ICMP, IGMP, GRE, AH, ESP, and IPCOMP

protocols.

You can select from a list of commonly used

protocols from this drop-down menu. This is the

equivalent of entering the correct Transport

Type and the correct port number corresponding

to a given protocol. The difference here is that

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