Tommie said:
what is the best file and internet sharing hardware router, hub, or switch??..i have a router....just curious to know your opinions and what works best....
The answer to your questions is very subjective, as many people will have different opinions.
In general, for file/internet sharing, the best router has some kind of hardware firewall with SPI (stateful packet inspection), is able NAT (network address transaltion) AND possibly (but not necessarily) can block outbound traffic based on a series of rules.
Most widely available routers these days do at least the first and second.
I personally own a Billion 7402VGO, which has all the above PLUS Built-In ADSL2+ Modem, A Wireless Access Point , Two VoIP Ports and and a VPN Server and 3 port VLAN/QoS Switch. A real bang for my buck!
The HUB/SWITCH has no bearing on security unless they have some kind of intelligence built in it (eg, ALL Cisco switches, except the 1548).
PS: Whatever you get it doesn't hurt to also install a software filewall on all your PCs on the network, incase some of your applications decide to call home
Hope the above helps.