Ip Filtering - THOMSON TCW770 User Manual

Chapter 2: WEB Configuration
the services from other registered UPnP devices on the network.

NatSip Alg Enable
LAN side. An ALG understands the protocol used by the specific applications that it supports and does a protocol
packet-inspection of SIP traffic through it. A NAT router with inbuilt SIP ALG can re-write information within the
SIP messages (SIP headers and SDP body) making possible signaling and audio traffic between LAN client and
outside SIP endpoint.

2. IP Filtering

This page enables you to enter the IP address ranges of PCs on your LAN that you don't want to have outbound access to
the WAN. These PCs can still communicate with each other on your LAN, but packets they originate to WAN addresses
are blocked by the gateway.
Illustrations contained in this document are for representation only.
feature enabled by default. While ALG could help in solving NAT related problems in client
Fig. 18
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