a few questions about internet sharing and security
Hi, I have an iMac connected to my aparment complexes' wireless network. I realize this isn't the safest way to be online so I was wondering what I could do to protect my computer. When I open a finder window I see all the other computers listed in the "shared computers" menu and this makes me nervous that mine is showing up in others' finders as well. I would like to know how I can prevent everyone else from seeing my computer on our shared network, and possibly prohibit those that still can see my computer from getting access to it. Sounds a little perinoid I know, but it just bothers me to know people have potential access to my files and such. Also I have an Apple tv and wireless printer. I was wondering if there was a way to connect my own wireless router to my iMac (via the ethernet port) directly so that I would have an exclusive (to me and possibly my roomates) connection to wirelessly print, transfer media to/from the Appletv, and rent and buy things from the Appletv online, but also stay connected to the internet. I hope that wasn't confusing, but would appreciate any ideas.
2.0GHz iMac 20" Intel Core 2 Duo, Mac OS X (10.5.4), 2GB Ram, 250GB HD