I Has Problem Comodo Internet Security Not Update and Sophos XG Firewall "Invalid Packet"

Hi Wason Saejil 

Did you configure web filtering for outbound traffic? 

If you do have web filtering configured, try to find the domains of the update server and bypass from the web filtering. 

Check out the following KBA for more info: How to create web exceptions.

Thanks,

Thks.

   The Comodo Team Support Recommend Comodo Update Link Setting.

Step 1: Open Comodo internet security
Step 2: Click 'Settings' at the top of the CIS home screen Step 3: Click 'General Settings' > 'Updates' on the left:
Step 4: Click 'Proxy and Host Settings' at the bottom of the 'Updates' interface:
Step 5: Click the 'Edit' button in the lower pane
Step 6: Edit the https://download.comodo.com/ to http://downloads.comodo.com/
Step 7: Then click on Ok and now try to update your comodo.

This has been sucess CIS Update.