By using VSE only this option available on Access protection rules to prevent modify network setting. There have another McAfee product that can full fill your requirement (By using McAfee Application control product you can prevent network setting).
And second requirement to prevent uninstall Any McAfee products, this requirement you can full fill using below McAfee kb articles
This article helps you to prevent VSE uninstallation you can use same concept to prevent uninstall another McAfee products.
But this setting you have to apply by using Active Directory, Batch files or script.
There is no setting available to automation configuration into ePO.