Managing Dial-Up Access Security with AUTOLINK and AUTOLINK Authentication

Timeouts

The following are the properties of AUTOLINK timeouts:

A user has one minute to complete an interactive login successfully. The clock starts from the time the USERNAME> prompt is displayed. This includes the time for the user name/password request to be processed by the authentication server. After one minute elapses, the port is logged out and the modem is disconnected.

When a terminal emulation window first appears, it is blank. Entering a carriage return produces a USERNAME > prompt. If you do not enter a carriage return, the prompt is displayed after a user-set timeout (AUTOLINK PASS ONE). At this point the one minute time limit is initiated.

If a user authenticates successfully in a terminal window (or a script), a single carriage return or a lapse of a user-set timeout (AUTOLINK PASS TWO) produces a local prompt. The user or the script can enter C PPP or C SLIP to begin framed operation.

Using a Login Script

If you use a login script on the remote client, your script must include the following:

Stage Description

1The script must send a carriage return character. Alternatively, the script can send no characters for [AUTOLINK TIMER PASS ONE] seconds (note that this is not the preferred method).

2The script searches for Username> and responds with the user’s user name and a carriage return.

3The script searches for Password> and responds with the user’s password and a carriage return.

4The script searches for:

Local -451- Authentication successful

5The script exits and allows the framed protocol to run. Note that the key phrase to search for is “Authentication successful”.

Managing Access Server Security 22-35