wireless networks

[derek norton]

Can information passed over a wireless router be seen by other parties?

[Kerplunk]

If you have high level security then it is very difficult (Never say impossible).

[OBonio]

If you use WEP then they can't see it without decrypting (which is fairly easy). If you don't use any encryption, people can see it very easily.

Personally, I don't use any encryption on my wireless network simply because of the overheads. It's slow enough as it is!

[Kerplunk]

You have more encryption options than WEP and you shouldn't notice any significant loss of speed.  I use WEP along with MAC Address filtering and do online gaming and downloading with no problems.