NETGEAR RT328 manual TCP/IP Support, Security

Intro.fm Page 4 Tuesday, October 10, 2000 3:15 PM

Reference Guide for the Model RT328 and Model RH348 ISDN Routers

TCP/IP Support

The Model RT328/RH348 router supports the Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing Information Protocol (RIP), which ensures that ISDN connections are established only when passing data.

For further information about TCP/IP, refer to “Basic Router Concepts” on page 1-6.

IP Address Masquerading by Dynamic NAT+

Both NETGEAR routers allow an entire department of networked PCs to share an Internet account using only a single IP address, which may be statically or dynamically assigned by your Internet service provider (ISP). This technique, an extension of network address translation (NAT), is known as IP address masquerading and typically allows the use of a very inexpensive ISP account.

Automatic Configuration of Attached PCs by DHCP

The routers can dynamically assign network configuration information, including IP, gateway, and domain name server (DNS) addresses, to attached PCs on the LAN using the Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies configuration of LAN-attached workstations.

Security

The Model RT328/RH348 router is equipped with several features designed to maintain security.

These security features are described in this section.

Calling Line Identification

The use of Calling Line Identification (CLID or Caller ID) ensures that incoming ISDN calling numbers are checked against known numbers before a call is answered and access is granted, thus providing a first level of security. In many areas, you must specifically request that CLID be enabled by the telephone company for your ISDN line. In some regions, CLID may not be available.

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