L2TP IPSec VPN with AD Authentication

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pcservice
pcservice Posts: 4  Freshman Member
Fifth Anniversary
in Nebula
trying to get L2TP IPSec VPN with AD Authentication working. Followed this "https://community.zyxel.com/en/discussion/13087" How to Set Up L2TP IPSec VPN with AD Authentication on Nebula
Issue I am running into is no matter what account I use we get "User ***** has been denied from L2TP service.(Incorrect Username or Password)"

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  • mMontana
    mMontana Posts: 1,432  Guru Member
    Zyxel Certified Network Administrator - Security Zyxel Certified Network Administrator - Switch 50 Answers 1000 Comments
    Maybe your current configuration cannot correctly query your AD?
  • Zyxel_Cooldia
    Zyxel_Cooldia Posts: 1,537  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 1000 Comments
    Hi @pcservice,
    Can you post Windows AD event log when l2tp client login? We may need to check if there are any authentication error/fail event log in Windows AD.

  • pcservice
    pcservice Posts: 4  Freshman Member
    Fifth Anniversary
    I ended up creating a new domain admin account to use for AD, this worked fine. The original admin account I was using had all the same rights as the new one I created, and It was not showing any errors in the logs with the account.  
  • Zyxel_Cooldia
    Zyxel_Cooldia Posts: 1,537  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 1000 Comments
    edited July 2022
    Not sure if it was related to Windows AD issue or Nebula issue. Assume the issue happens again. please help us to check if there is any error/warning event in Windows event log. 

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