i need a hub, and assume a router like this would be better?

Remember that these NAT devices serve a different purpose than a hub. Some of them come with an integrated hub/switch (the Linksys BEFSR41 has four 10/100mb switched ports, the BEFSR11 is a single port), but their real purpose is to protect your local network from a broadband connection while still allowing users inside the network access to the internet.

They include Network Address Translation (NAT) and a DHCP server, along with some firewall features.

But if you happen to need a 4-port hub at the same time as you need a firewall for your network, then you certainly can't go wrong with one of these products.