Chap authentication failure volkp

I cannot configure CHAP target authentication (the initiator authentication works fine). If I give up CHAP target authentication by commenting out the node.session.auth.{username_in,password_in}, everything works fine. In particular, the tgtd says "CHAP target auth.: no outgoing credentials configured." (which doesn't seem to be true :)). 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 Also check your Authentication Source (primary/backup tab) and see if you can browse the AD tree using the account specified. I would also double check that domain join; even remove and readd. The check for corresponding account with EAP-TLS is an LDAP lookup; as compared to an 802.1X EAP-MSCHAPv2 authentication. May 26, 2017 · If I the box for CHAP is ticked, the authentication request uses MD5-CHAP and fails. I can switch between the two states by toggling the CHAP tickbox. If I get any other details incorrect, it does fail, but with the same error; but I think the root cause is CHAP.

Dec 18, 2007 · For more information, refer to the document PPP Authentication Using the ppp chap hostname and ppp authentication chap callin Commands. Troubleshooting Outgoing CHAP Failures If the peer detects an incoming failure message, this means the local router has failed to authenticate the peer and has sent out the message.

Apr 16, 2007 · But I still wondering why chap authentication failed . 0 - Collapse - Just sharing. by R. Proffitt Forum moderator Apr 19, 2007 9:59PM PDT. I wrote some IP server code over 10 years ago. PEAP with MS-CHAP v2 as the client authentication method is one way to help secure VPN authentication. To enforce the use of PEAP on client platforms, Windows Routing and Remote Access Server (RRAS) servers should be configured to allow only connections that use PEAP authentication, and to refuse connections from clients that use MS-CHAP v2 or Jun 15, 2011 · I have two users who upon changing their passwords continually get locked out of their accounts. The lockout isn't being generated by a standard netlogon attempt but a RADIUS CHAP authentication request. I see in the event viewer when the login attempt is made but it doesn't provide me with any identifiable information. Info PPP PPP: CHAP authentication failed - check username / password ; Info L2TP Server L2TP Server: RADIUS/LDAP reports Authentication Failure zzz.zzz.zzz.zzz, 50611 (testuser) xxx.xxx.xxx.xxx, 1701 Host Name :, User Name :testuser, Auth Algorithm :MD5 CHAP ; Specifically I want to highlight on the last line "Auth Algorithm :MD5 CHAP ".

Sep 29, 2014 · Enable the use of CHAP authentication on both routers with the ppp authentication chap command. Configure the usernames and passwords. To do so, issue the username username password password command, where username is the hostname of the peer.

Here is what I have learned from the QNAP tech support today about the iSCSI issue. - First turn off CHAP on the QNAP - Connect to the QNAP without CHAP (Basically they want us to discover the target without CHAP enabled) - After we discover the target, enable CHAP on the QNAP - Log off the session in Windows initiator - Put in the CHAP information in Windows initiator and re-connect again and 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?