Broadband Internet Glossary

NAT (Network Address Translation).  NAT (network address translation) is a protocol that allows a single network address allocated by an ISP to be shared by a number of local terminals.

NAT Firewall (Network Address Translation Firewall).  A NAT firewall is a firewall with an integrated NAT router.

NAT Protocol (Network Address Translation Protocol).  The NAT protocol provides for translation of IP addresses and TCP port numbers between a local address space and the global address space.

NAT Router (Network Address Translation Router).  A NAT router is a router that supports the NAT protocol to allow the internal address space to be independent of the Internet's global address space.

NAT Server (Network Address Translation Server).  NAT server is another name for a NAT router.

NAT VPN (Network Address Translation Virtual Private Network).  Special procedure are sometimes required if a VPN is established over a connection that contains a NAT device.

Manufacturers of Broadband Internet

• Netcomm.  Products from Netcomm include Ethernet Switch, Wireless xDSL Access and Broadband Switch and xDSL Switch
• Netgear.  Products from Netgear include Broadband Modem, DSL Switch, Ethernet Router and Cable Modem and DSL Modem

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