FQDN vs NetBIOS Domain Name

[charger]

Hi,

I have a PA-3020 running agentless user-id. When I examine the traffic log, some user id's are displayed as netbios_domainname\userid and others displayed as FQDN\userid.

ie:

domain\billw

vs.

domain.somewhere.com\billw

Any ideas as to why this happens?

Thanks

M

[kfindlen · Accepted solution]

When utilizing the agentless User-ID on PAN-OS 5.0 and above a LDAP group mapping profile must be configured in order for the firewall to resolve FQDN domain names to the Netbios equivalent.  When the LDAP server profile and group mapping settings are configured the firewall will query some LDAP attributes in the configuration schema to resolve the Netbios name configured on the domain controller. 

The external, standalone agent behaves similarly but uses a different mechanism on the local machine to resolve the domain's Netbios name.