User manual THOMSON TWG850

[. . . ] CAbLE SATELLITE TELECOM TErrESTrIAL TWG850 - Residential Voice Gateway User manual Important Information CAUTION Disconnect power before servicing. CAUTION To ensure reliable operation and to prevent overheating, provide adequate ventilation for this modem and keep it away from heat sources. Do not locate near heat registers or other This device is intended for indoor operation only. Telephone jacks Line 1 and Line 2 must not be connected to outside wiring. heat-producing equipment. Provide for free air flow around the Residential Voice Gateway and its power supply. This symbol means that your inoperative electronic appliance must be collected separately and not mixed with the household waste. [. . . ] 31 Chapter 2: Web Configuration Gateway ­ Advanced Web Page Group Options This page allows you to enable/disable some features of the Residential Voice Gateway. Fig. 17 WAN Blocking prevents others on the WAN side from being able to ping your gateway. With WAN Blocking enabled, your gateway will not respond to pings it receives, effectively "hiding" your gateway. Ipsec PassThrough enables IpSec type packets to pass WAN a security mechanism used in Virtual Private Networks (VPNs). Tunneling Protocol) is another mechanism sometimes used in VPNs. Remote Config Management makes the configuration web pages in your gateway accessible from the WAN side. Note that page access is limited to only those who know the gateway access password. When accessing your gateway from a remote location, your must use HTTP port 8080 and the WAN IP address of the gateway. the WAN IP address is 157. 254. 5. 7, you would navigate to http://157. 254. 5. 7:8080 to Multicast Enable enables multicast traffic to pass WAN LAN. You may need to enable PPTP PassThrough enables PPTP type packets to pass WAN LAN. IpSec (IP Security) is this to see some types of broadcast streaming and content on the Internet. 32 Chapter 2: Web Configuration IP Filtering This page enables you to enter the IP address ranges of PCs on your LAN that you don't other on your LAN, but packets they originate to WAN addresses are blocked by the gateway. want to have outbound access to the WAN. These PCs can still communicate with each Fig. 18 MAC Filtering This page enables you to enter the MAC address of specific PCs on your LAN that you wish to NOT have outbound access to the WAN. As with IP filtering, these PCs can still communicate with each other through the gateway, but packets they send to WAN addresses are blocked. Fig. 19 Illustrations contained in this document are for representation only. 33 Chapter 2: Web Configuration Port Filtering This page allows you to enter ranges of destination ports (applications) that you don't want your LAN PCs to send packets to. Any packets your LAN PCs send to these destination ports will be blocked. For example, you could block access to worldwide web browsing (http = port 80) but still allow email service (SMTP port 25 and POP-3 port 110). To enable port filtering, set Start Port and End Port for each range, and click Apply. To block only one port, set both Start and End ports the same. Fig. 20 34 Chapter 2: Web Configuration Forwarding For LAN WAN communications, the gateway normally only allows you to originate an IP connection with a PC on the WAN; it will ignore attempts of the WAN PC to originate a connection onto your PC. [. . . ] IP Address ­ A unique, 32-bit address assigned to every device in a network. An IP (Internet Protocol) address has two parts: a network address and a host address. This modem receives a new IP address from your cable operator via DHCP each time it goes through Initialization Mode. Key exchange - The swapping of mathematical values between entities on a network in order to allow encrypted communication between them. [. . . ]