попытались авторизоваться на сервере доступа с использованием NetUP RADIUS (www.netup.ru), и с использованием FreeRadius. Вот что получили в дебаге сервера доступа cisco с командой debug ppp auth:

------------   NetUP RADIUS   ------------

4w3d: Call Handle failed for Modem 1/8
4w3d: As41 PPP: Using modem call direction
4w3d: As41 PPP: Treating connection as a callin
4w3d: As41 PPP: Authorization required
4w3d: %LINK-3-UPDOWN: Interface Async41, changed state to up
4w3d: As41 CHAP: O CHALLENGE id 6 len 27 from "cs3640"
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 PPP: Sent CHAP LOGIN Request
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 CHAP: Ignoring Additional Response
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 CHAP: Ignoring Additional Response
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 CHAP: Ignoring Additional Response
4w3d: As41 AUTH: Timeout 1
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 CHAP: Ignoring Additional Response
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 CHAP: Ignoring Additional Response
4w3d: As41 CHAP: I RESPONSE id 6 len 29 from "testuser"
4w3d: As41 CHAP: Ignoring Additional Response
4w3d: As41 AUTH: Timeout 2
4w3d: As41 PPP: Received LOGIN Response FAIL
4w3d: As41 CHAP: O FAILURE id 6 len 25 msg is "Authentication failed"
4w3d: %LINK-5-CHANGED: Interface Async41, changed state to reset
%This command has no effect on this line; use modem AT commands instead
%This command has no effect on this line; use modem AT commands instead
%This command has no effect on this line; use modem AT commands instead
%This command has no effect on this line; use modem AT commands instead
4w3d: %LINK-3-UPDOWN: Interface Async41, changed state to down
cs3640#

/* пользователь не авторизован */
------------------------------------------

------------    FreeRadius    ------------

4w3d: Call Handle failed for Modem 1/8
4w3d: As41 PPP: Using modem call direction
4w3d: As41 PPP: Treating connection as a callin
4w3d: As41 PPP: Authorization required
4w3d: %LINK-3-UPDOWN: Interface Async41, changed state to up
4w3d: As41 CHAP: O CHALLENGE id 11 len 27 from "cs3640"
4w3d: As41 CHAP: I RESPONSE id 11 len 26 from "testuser"
4w3d: As41 PPP: Sent CHAP LOGIN Request
4w3d: As41 PPP: Received LOGIN Response PASS
4w3d: As41 CHAP: O SUCCESS id 11 len 4
4w3d: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async41, changed state to up
4w3d: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async41, changed state to down
4w3d: %LINK-5-CHANGED: Interface Async41, changed state to reset
%This command has no effect on this line; use modem AT commands instead
%This command has no effect on this line; use modem AT commands instead
%This command has no effect on this line; use modem AT commands instead
%This command has no effect on this line; use modem AT commands instead
4w3d: %LINK-3-UPDOWN: Interface Async41, changed state to down
cs3640#

/* пользователь авторизован и упешно вошел в сеть */
------------------------------------------

  Подскажите пожалуйста, на какой стороне может быть проблема: в
настройке сервера доступа или же в сервере NetUP RADIUS.

• Проблемы с PPP авторизацией, XJunior, 18:29 , 05-Дек-03, (1)