So you could try:
1. firewall rules
2. use the hosts file to block destinations
Free hosts file editors- hostsman, bluelife Simplify Your Pc Usage
(a trick often used to block bad sites/advertising)
3. IE, Tools, Internet Options, Privacy, Sites

You would need to research what you need to block and caveat- I've not tried to do this, so offered in principle only.

Should you then wish to apply updates, you could download one copy and apply manually, but in your situation, security updates are probably irrelevant.