What type of security should a internet connection have at a small office?

With a office of 3 pcs maybe which kind of security things should i have, should that have WPA2 passkey to the router being a essential, what different types of firewalls along with wireless protection

WPA2-AES will be the current best encryption.
Routers are hardware firewalls.
The only need for LAN workstation firewalls would be to diminish threats with the other LAN associates…done commonly where workstations will not be ‘locked down’ or you have the chance of media intro.

Along with the hardware configurations, a LAN “Policy” ought to be thought as a result of, and instituted.
That establishes precisely what employees might, and can’t do; who’s going to be in control with the Administration with the LAN; password guidelines; hierarchy with control; monetary gift of command; employee leaving procedures, or alternative activities that might disrupt protection & records access.
Well outlined and strict policy will make or break an organisation.
Freshly exposed has been the Sony boondoggle, where a policy of encryption was not thought out in order to guarantee confidentiality.

Ah merely put for a bicycle sequence on this.Nobody could nick that then.