client machine cannot open certain web sites

[namsilat]

I have a small 3 machine network, with one machine acting as the
server (and connected to internet), and 2 other machines as clients
that connect to internet through a hub.

Frequently I cannot access many web sites from the client machines,
but if I first surf the web site with the server machine, then things
are ok, otherwise, often an error message pops up on the client
machine indicating web site not found, such that it cannot resolve the
web site address.

I wonder if it's a problem with the hub, but if so, why would it be
corrected once the server machine logs on the site?

 

[Peter Foldes]

Are you not using a router

 

[namsilat]

Not really. The first machine acts as a server, and the 3 machines are
networked through a hub. Perhaps the solution is to get a router.