Wide Area Network Termination
PPPoE/PPPoA (Point-to-Point Protocol over Ethernet/ATM)
The PPPoE specification, incorporating the PPP and Ethernet standards, allows your com- puter(s) to connect to your Service Provider’s network through your Ethernet WAN connec- tion. The 2200 and
Service Providers may require the use of PPP authentication protocols such as Challenge Handshake Authentication Protocol (CHAP) or Password Authentication Protocol (PAP). CHAP and PAP use a username and password pair to authenticate users with a PPP server.
A CHAP authentication process works as follows:
1.The password is used to scramble a challenge string.
2.The password is a shared secret, known by both peers.
3.The unit sends the scrambled challenge back to the peer.
PAP, a less robust method of authentication, sends a username and password to a PPP server to be authenticated. PAP’s username and password pair are not encrypted, and are therefore sent “unscrambled”.
Instant-On PPP
You can configure your Gateway for one of two types of Internet connections:
•Always On
•Instant On
These selections provide either an uninterrupted Internet connection or an
While an Always On connection is convenient, it does leave your network permanently con- nected to the Internet, and therefore potentially vulnerable to attacks.
Motorola Netopia®'s Instant On technology furnishes almost all the benefits of an Always- On connection while providing two additional security benefits:
•Your network cannot be attacked when it is not connected.
12
