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SaaS Email and Web Security
Apologies for taking up your time,
I did not know how to reply
( had to log in first ).
I have solved the problem by
starting the McAfee from the desktop
rather than the App.
I was then able to click on navigate,
then to firewall and then to the port setting.
Thank you so much for your help.
This thread is now solved and can be closed.
( would clicking the "Correct Answer" close it ? )
I will try that.