Office 365 access issue

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Announcements
Please sign in to see details of an important advisory in our Customer Advisories area.

Office 365 access issue

L3 Networker

Hi Guys,

 

we have a problem: if a pc is in the lan, behind the firewall, we are not able to log in to office365, but if we use an external connection it works.

i don't see any log with application containing 'office'

We have not decryption enabled, PA-3020 with 7.1.14

 

Do you have any hint?

Regards,

Daniele

3 REPLIES 3

Cyber Elite
Cyber Elite

@DKanta,

Enable interzone-default logging with log-start and log-end both checked. Then attempt to login from one computer; you'll then be able to search the unified logs for (addr in a.b.c.d) and see if the firewall is actively stopping this traffic for any reason. Chances are this is being identified as on of the 'ms-office365' applications and this isn't getting allowed via your security policy. 

Hi @BPry,

thanks for your suggestion, i did an on-top rule for one pc to do tests, and checked both log at session end and start, and effectively now i see some logs, with 'ms-office365-base' going through the firewall, allowed.

i will go for a packet capture, now that i have the destination IP, but i don't know how useful it could be..

 

Regards,

Daniele

@DKanta,

Just FYI I wouldn't count on the destination IP staying the same throughout your logging. It may be best to log on both the firewall and the actual PC in question. 

  • 2547 Views
  • 3 replies
  • 0 Likes
Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!