Salesman are gonna be the death of me !!

Here at my company, the Salesman have complained about being able to access the company's network from the Internet. So it has been put on my plate to look for solutions. My concern is security. We do run a firewall and an access list on the router. What options are out there for what I need? Anyone here have something similar at their company?

Thanks in advance,

 

It can get really really expensive since you're running a company. the cheapest way and one of the more insecure ways is by password protecting everything. But i'd go talk to RSA about this. they may have something for a nominal fee.