User`s guide

Configuring WAN Connections
How calls are answered
Pipeline User’s Guide Preliminary January 30, 1998 1-5
You can control how the Pipeline brings up WAN sessions using these methods:
• Use filters to block certain packets, such as broadcast, or IPX RIP or SAP
queries, from bringing up a connection to the remote network. (For
information about creating filters, refer to Chapter 6, “Defining Filters and
Firewalls.”)
• When bridging, you can prevent the Pipeline from dialing out when it
receives broadcasts by setting the Dial Brdcast parameter to No.
• When routing IPX, you can prevent the Pipeline from dialing out when it
receives IPX queries by setting the Dial Query parameter to No.
How calls are answered
Before the Pipeline answers an incoming call, it checks the Answer profile to see
if Calling Line ID (Id Auth) authentication is required. Id Auth verifies the
caller’s phone number before answering the call. If Id Auth authentication is
required and the phone number doesn’t match a Connection profile, the Pipeline
drops the call. If Id Auth is not required or if a matching Connection profile is
found, the Pipeline answers the call and applies the following tests:
1
Is the encapsulation type available?
The Pipeline supports PPP, MP+ (MPP), MP, BACP, and Frame Relay. If a
call does not use the encapsulation type specified in the Connection profile,
or cannot use PPP or Frame Relay, the Pipeline drops the call.
2
Is authentication required?
For PPP or MP+ calls, the Answer profile’s Recv Auth parameter might
require PAP, CHAP, or MS-CHAP.
Frame relay does not support call authentication.
If authentication is required, a matching Connection profile must be found.
If Answer > Profile Reqd=No and Id Auth=Ignore, the Answer profile
parameters are used to build the connection.
3
Is there a matching Connection profile?
The Pipeline can accept a call defined in a Connection profile if the
Connection > any profile > Telco Options > AnsOrig parameter is set to
Both or Ans Only. The default is Both.
The Pipeline attempts to match the caller’s name and password to a
Connection profile. If password authentication is not required, the Pipeline