Is it unsafe to use remote desktop over the internet?

[bledd]

If I'm just using remote desktop (on a different port) forwarded from the router, is this unsafe?

-Both sites are trusted (ie, home and office) so no foul play will go on at either site.

I used to use hamachi to handle this, can someone explain if it is dangerous to do it the way that I am now.

Thanks


Also, both machines are fully patched W7 boxes, I see the option for 'Network Level Authentication', should I enforce this? Does anything need to be altered on the router?

 

[bledd]

I'm well aware of teamviewer, logmein, vnc etc

Just wondering if/why it's unsafe to do what I'm doing