User-ID Proof Of Concept - With Proxy

[SirchRettop]

Good afternoon Team,

Pardon my stupidity here. I'm running a PoC at the minute and customer is keen on the User-ID aspect. However, the have most of their users behind a proxy.

We have configured the PoC in standard TAP, with LDAP server profile etc etc.

We are picking up users in logs from AD but I'm wondering if there is a way to see users behind proxy as oppose to the proxy ip address.

Obviously I can tell them that we'd remove the proxy and employ URL Filtering should they purchase the device but would really like for them to see traffic logs with users populated.

Thank you for all and any advice

[Raido_Rattameister · Accepted solution]

If you open URL Filtering profile there is "URL Filtering Settings" tab.
Last option is "X-Forwarded-For"
If you check it then Palo will capture real source IP from the http session and log it.
Proxy must add X-Forwarded-For to the traffic and unless you decrypt ssl you see this only for http sessions not https. You would need to be inline with vwire to decrypt.

Maybe they can switch proxy to transparent mode.

Also if you don't want to expose internal IPs then would be nice to strip this information after it passes Palo.

Device > Setup > Content-ID > X-Forwarded-For Headers > Strip X-Forwarded-For Header

[SirchRettop]

Yes they are using a Cisco WSA.

I may ask if they can enable XFF on the proxy, then I will enable XFF in the URL Filtering and Content-ID tabs.

We don't really want to place the device inline and perform SSL Decryption.

Customer is eager to see User-ID in action so hopefully the XFF option will help us alot.

Appreciate the input.