C.2.5 Could not join the domain
The appliance could not join the specified Active Directory domain, possibly due to insufficient
privileges for the given Username and Password. Check the Active Directory Domain
Controller, update the required fields on the System: Active Directory page, and click Verify
Settings again.
C.2.6 Could not test Kerberos settings
The appliance could not reach your specified Active Directory Kerberos server or the specified
Active Directory Domain Controller is not in your Kerberos server’s database. Update the
required fields, check the Active Directory Kerberos server on the System: Active Directory
page, and click Verify Settings again.
C.2.7 Could not test LDAP settings
The appliance could not authenticate to your specified Active Directory LDAP server, or the
specified LDAP Base DN field is incorrect. Check the Active Directory Domain Controller,
update the required fields on the System: Active Directory page, and click Verify Settings
again.
C.2.8 Domain could not be found
The specified Active Directory domain could not be found. Check the Active Directory Domain
Controller, update the required fields on the System: Active Directory page, and click Verify
Settings again.
C.2.9 Hostname is too long
The appliance hostname cannot be longer than 15 characters to join the Active Directory domain.
Update your Fully-qualified domain name on the Configuration > Network > Hostname page,
and configure your Active Directory settings on the System: Active Directory page.
C.2.10 Invalid credentials
The appliance could not authenticate with the given Username and Password. Check the Active
Directory Domain Controller, update the required fields on the System: Active Directory page,
and click Verify Settings again.
C.2.11 LDAP search query timeout
The appliance is having trouble communicating with your Kerberos server and has timed out
waiting for a response. Specifically, the appliance is unable to auto-detect the LDAP authentication
DN field. Check your Kerberos server and firewall settings to ensure that they are communicating
on the proper ports and that those ports are properly configured on your firewall, and then re-test
the Active Directory settings by clicking Verify Settings on the System: Active Directory page.
206 | Appliance Behavior and Troubleshooting | Sophos Web Appliance
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