USG-40 AD Auth "Wrong Bind DN or Base DN

Thysmith

Our AAA service setup using Active Directory is no longer working. Upgraded to firmware 4.62. Everything is setup the same with no major changes. Continually getting "Wrong Bind DN or Base DN". If I set the bind DN password to something I know is incorrect then I will get "Wrong Bind DN or Password".

Clearly the system is able to see that the info I am inputting is incorrect. Appears related to the Base DN info, but again nothing has changed. 

I assume it's the new firmware but are there any AD settings that might need to be verified or logs I can check?

Thanks. 

Zyxel_Can

Hi @Thysmith,

 

In the provided packets I see;

“The server requires binds to turn on integrity checking if SSL\TLS are not already activate on the connection.” as response from your AD server."

Can you share your AAA Server settings? ( Configuration > Object > AAA Server > Active Directory)

Can you share your startup-config.conf file with me by private message?

 

Can you also try to switch "Use SSL" checkbox in the settings and try again?

Thysmith

You nailed it! Good find.


I needed to use port 686 to use SSL, but it is working now. Thank you for your assistance!

Zyxel_Can

Hi @Thysmith,

 

Did you input Base DN and Bind DN information correctly?

(Configuration > Object > AAA Server > Active Directory)

(Active Directory Users and Computers > Properties > Attribute Editor > distinguishedName)


(Active Directory Users and Computers > Users > Properties > Attribute Editor > distinguishedName)

Here you can find related KB article;

https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=014326&lang=EN

Thysmith

Yes, everything is correct. As I said, everything worked fine before. 

soul

reboot your AD

Thysmith

@soul

I was hopeful that would work as I had not done that but I rebooted everything and it is still giving me the same error. 

Zyxel_Can

Hi @Thysmith,

Did that issue start after upgrading to 4.62?

Can you capture packets when you testing and adding your Active directory and send me by private message?

Zyxel_Can

Hi @Thysmith,

 

In the provided packets I see;

“The server requires binds to turn on integrity checking if SSL\TLS are not already activate on the connection.” as response from your AD server."

Can you share your AAA Server settings? ( Configuration > Object > AAA Server > Active Directory)

Can you share your startup-config.conf file with me by private message?

 

Can you also try to switch "Use SSL" checkbox in the settings and try again?

Thysmith

You nailed it! Good find.


I needed to use port 686 to use SSL, but it is working now. Thank you for your assistance!