topic Re: Active Directory groups w/ members from multiple domains in General Topics

Active Directory groups w/ members from multiple domains

JamesH1318 — Wed, 14 Aug 2024 19:09:37 GMT

I'm using AD groups for some security policies and am expanding to use other domains in our company. While I can add users from another domain into an AD group, the PA only shows me the users in the same domain as the group. For example:

Domain 1: DC=first,DC=com

User 1: CN=idone,OU=users,DC=first,DC=com

Group: CN=cars,OU=groups,DC=first,DC=com

Domain 2: DC=second,DC=com

User 2: CN=idtwo,OU=funnyguys,DC=second,DC=com

The domains, first.com and second.com, have a trust relationship and therefore I can add users from second.com into groups in first.com. However, when I do a show user group name "CN=cars,OU=groups,DC=first,DC=com" I only see first.com\idone.

If I look at the CN=cars,OU=groups,DC=first,DC=com directly in AD, user idtwo is in the member list but as a SID.

Is there any way to translate FSP (Foreign Security Principals) into usable \ recognizable usernames?

Re: Active Directory groups w/ members from multiple domains

TomYoung — Thu, 15 Aug 2024 03:43:31 GMT

Hi @JamesH1318 ,

Does these articles help?

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClExCAK

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClGICA0

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClI8CAK

Thanks,

Tom

Re: Active Directory groups w/ members from multiple domains

JamesH1318 — Thu, 15 Aug 2024 12:49:47 GMT

Hi @TomYoung. Thanks for the links as I had not seen them yet! It turns out they don't help me in my situation. I'm already at the root of each of the two domains, each their own forest, with the only connection being a trust relationship.

Tried to see if group mapping could be done via SAML connection to Entra ID but appears to be LDAP only, at least in PAN-OS 10.2. Investigation continues!

Re: Active Directory groups w/ members from multiple domains

RH747 — Mon, 06 Oct 2025 18:22:21 GMT

Any luck on finding a solution? I would be interested in learning if you found something that worked!

Would pulling both domains into the Palo LDAP suffice? It would be a bit more work as you would need to replicate domain groups within both, but as far as I can tell your original configuration isn't possible.