How resolve NetExtender Error: sonicwall verifying user incorrect user/password

10/26/2023 45 People found this article helpful 327,548 Views

Description

This is the common error encountered on NetExtender. This article will detail what that error means as well as steps to resolve the issue.

Resolution

Resolution for SonicOS 7.X

This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.

Authentication for SSL-VPN users is done using the Local User, LDAP or Radius. Incorrect username and password can cause these issues on SonicWALL NetExtender.

Having an incorrect bind is the most common reason for seeing Authentication Failed when you have LDAP Setup

1. Verify the Username and Password of the User.

2. Under User | Settings | Authentication | Disable Case Sensitive user names

3. Under SSL VPN|Server Setting page confirm the SSLVPN Port and User Domain.

4. Even after making these changes it doesn't work create a Local Test user and test on NetExtender.

Resolution for SonicOS 6.5

This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.

Authentication for SSL-VPN users is done using the Local User, LDAP or Radius. Incorrect username and password can cause these issues on SonicWALL NetExtender.

Having an incorrect bind is the most common reason for seeing Authentication Failed when you have LDAP Setup

1. Verify the Username and Password of the User.

2. Under User

3. Under SSLVPN|Server Setting page confirm the SSLVPN Port and User Domain.

4. Even after making these changes it doesn't work create a Local Test user and test on NetExtender.

5. Testing the Connection with Netextender
Download and install SonicWall NetExtender that is available via SonicWall.com.
You can follow this link for the instructions:
https://www.sonicwall.com/support/knowledge-base/how-can-i-download-and-install-NetExtender-for-windows/170503561905844/

Configure NetExtender Client like the following example.

Server: IP Address of the SonicWall WAN interface followed by:4433 (by default SSL VPN is enabled on every WAN Interface of the SonicWall followed by the port specified in Server Settings of SSL VPN)
You can also specify a DNS name if you have a DNS published for your organization, e.g. sslvpn.mycompany.com:4433
Username: insert the user that you want to connect with
Password: specify the password for that user
Domain: insert the Domain Name (case sensitive) specified in Server Settings of SSL VPN.