I have a similar problem: OS X Server 10.3.9 running on a G3; clients running OS X 10.4.8. I used Server Admin to set up the server with L2TP and set the shared secret[1]; I used Internet Connect to try to get a client to connect to the server. The result is always the same: The client says "Authentication
Given that these are security servers with a load balancer (F5) in front. I would lean towards the possibility one of the security servers may be the source of the issue and random incoming users are assigned to it. CHAP (Challenge Handshake Authentication Protocol) CHAP is used at initial startup and once link is established, sequential authentication are performed to make sure that router is still communicating with same host. If any sequential authentication is failed, connection will be terminated immediately. CHAP authentication is a three steps process. The Extensible Authentication Protocol Method for Microsoft Challenge Handshake Authentication Protocol (CHAP) uses the Microsoft Challenge Handshake Authentication Protocol version 2 (MSCHAPv2) [RFC2759], as an authentication method within the Extensible Authentication Protocol (EAP) framework [RFC3748]. authentication authentication [Th 41 Req 1191 SessId R00000078-01-5ae1ccb8] INFO RadiusServer.Radius - MS-Chap User Authentication time = 0 ms 2018-04-26 07:57:28,982 [Th 41 Req 1191 SessId R00000078-01-5ae1ccb8] ERROR RadiusServer.Radius - rlm_mschap: FAILED: MS-CHAP2-Response is incorrect Compared with CHAP, MS-CHAP: is enabled by negotiating CHAP Algorithm 0x80 (0x81 for MS-CHAPv2) in LCP option 3, Authentication Protocol; provides an authenticator-controlled password change mechanism; provides an authenticator-controlled authentication retry mechanism; defines failure codes returned in the Failure packet message field
As illustrated in the flowchart, successful authentication progresses to the next level, while an authentication failure disconnects and drops the incoming PPP request. Follow the steps to view R1 establishing an authenticated PPP CHAP connection with R2.
Microsoft Challenge-Handshake Authentication Protocol (MS-CHAP) has some additional features, such as providing a method for changing passwords and retrying in the event of a failure. Do you have any suggestions? Which PPP sub protocol provides us with authentication? You have a 50-50 chance for getting it right. It's either NCP or LCP, which one is it? It's LCP. And there are 2 types of authentication we can implement, Password Authentication Protocol, or PAP and Challenge Handshake Authentication Protocol, or CHAP.
Challenge Handshake Authentication Protocol (CHAP). Challenge Handshake Authentication Protocol (CHAP) is more secure than PAP. It involves a three-way exchange of a shared secret. During link establishment, CHAP conducts periodic challenges to make sure that the remote host still has a valid password value. While PAP basically stops working once authentication is established, this leaves the
Microsoft Challenge-Handshake Authentication Protocol (MS-CHAP) has some additional features, such as providing a method for changing passwords and retrying in the event of a failure. Do you have any suggestions? Which PPP sub protocol provides us with authentication? You have a 50-50 chance for getting it right. It's either NCP or LCP, which one is it? It's LCP. And there are 2 types of authentication we can implement, Password Authentication Protocol, or PAP and Challenge Handshake Authentication Protocol, or CHAP. pppoe seems not retried after CHAP authentication failure. Reported by: hato: Owned by: developers: [740]: CHAP authentication succeeded: CHAP authentication CHAP stands for Challenge Handshake Authentication Protocol. It is an authentication scheme used by servers to validate the identity of remote clients. The verification is based on a shared password or secret. CHAP can be one way (unidirectional) or mutual (bidirectional). One way CHAP is when the target authenticates an initiator. Hello all, I have installed my Linux Mandrake 7.2. All goes ok except but whenn I try to dial my isp. CHAP cannot authenticate. My password is ok, and i don´t now what more can I do. Sep 09, 2013 · 0xC000006D STATUS_LOGON_FAILURE The attempted logon is invalid. This is either due to a bad username or authentication information. 0xC000006A STATUS_WRONG_PASSWORD When trying to update a password, this return status indicates that the value provided as the current password is not correct. 2.3.1 NTSTATUS values "Use CHAP credentials for iSCSI discovery" is NOT checked. Observations: The authentication failures occur only on the snapshot. The parent volume has never alerted for authentication failure. Despite the failure message, the snapshot still displays an active connection to host that supposedly failed in the GUI