Update (patch) DMZ linux Server

Please post the firewall rule you have created for same 

this is a rule

Try to apply the schedule policy as per the link : 

 https://docs.sophos.com/nsg/sophos-firewall/18.5/Help/en-us/webhelp/onlinehelp/AdministratorHelp/Profiles/Schedule/ProfilesScheduleAdd/index.html 

Create a clone of the same rule and edit the firewall rule with Action drop with schedule time "All time" keep the rule below

Regards

i think you don't understand

now with the precedente rule , server can't connect to update !

Please post both firewall rule for schedule with rule number#