I'm looking to either block ports or some way to block VPNs.  To be specific, I have 

The parental controls are fairly laughable - 30 blocked sites after getting a subscription?  I'm playing whack-a-mole with Rammerhead VPN, a VPN within a browser that allows the user to get around pretty much everything.  And the site used to access it changes daily.  So blocking the site doesn't help.  Doing some research is making me think I can block the port on the router - don't see the option.  I'm guessing my old router from 2008 could do it but I guess more money spent means less features?  Is there some other option to handle this problem?