D-Link DSL-2745 User Manual

102D-Link DSL-2745 Wireless N300 ADSL2+ Modem Router User Manual
Section 4 - Conguration
NAT ALG
ALG CONFIGURATION
Check or un-check the boxes next to the protocols to enable or disable them.
Click Apply Changes when you are done.
Application Level Gateways (ALGs) are security components that enhance the
rewall and NAT support of this router to seamlessly support application layer
protocols. In some cases enabling the ALG will allow the rewall to use dynamic
ephemeral TCP/ UDP ports to communicate with the known ports a particular
client application (such as H.323 or RTSP) requires, without which the admin
would have to open large number of ports to accomplish the same support.
Because the ALG understands the protocol used by the specic application
that it supports, it is a very secure and ecient way of introducing support for
client applications through the router’s rewall.

D-Link DSL-2745 Specifications

General

Brand	D-Link
Model	DSL-2745
Category	Network Router
Language	English