All networks, large and small, deserve protection from the Internet. While there are many options for virus and spam, little attention is afforded to the ingress of any small business network. Cheap domestic modem/routers may serve a simple purpose of giving internet access to and from the network, they are often mis-configured or left wide-open to the Internet. These vulnerable networks are often hacked, servers and PC's compromised and data stolen.
Networking is a complex art requiring expertise not often found in the PC industry. Only small business specialists understand the intracisies of network port utilization, forwarding, DMZ, and blocking.