In most cases, this shouldn't pose any issues (though some games doing crazy things with networking could be affected).
These rules restrict the ports listening directly on the internet. The average gaming PC is behind a home router, has no ports reachable from the internet, and network games still work fine.
If your college was like mine, what they did was filtering outbound connections, which is different. Outbound traffic is unfiltered by default on EC2, and it's fine to leave it that way.
These rules restrict the ports listening directly on the internet. The average gaming PC is behind a home router, has no ports reachable from the internet, and network games still work fine.
If your college was like mine, what they did was filtering outbound connections, which is different. Outbound traffic is unfiltered by default on EC2, and it's fine to leave it that way.