I have problems to activate Acrobat DC for security reasons

Hi!

Hope you are doing well!!

From the description, I can understand that you want to allow the ports and links through which Acrobat activates the license. 

Followings are the host/port combinations that may need to be added when logging in with an Adobe ID to download, install, and activate licenses for applications such as Acrobat or other Creative Cloud applications:

• ccmdls.adobe.com:443
• ims-prod06.adobelogin.com:443
• na1r.services.adobe.com:443
• prod-rel-ffc-ccm.oobesaas.adobe.com:443
• lm.licenses.adobe.com:443
• ccmdl.adobe.com:80
• swupmf.adobe.com:80
• swupdl.adobe.com:80

For detailed information about the Network endpoints, browser/non-browser-based services, etc, see this article: https://helpx.adobe.com/enterprise/kb/network-endpoints.html 

I hope this helps. Let us know if you experience any issues.

Thanks,

Anand Sri.