DCS is a reseller of GFI services and software. GFI makes products and solutions that help companies secure and maintain their IT environments.
A quote from their website.
"Our goal is to provide your business with all the solutions needed to effectively monitor, manage and secure your IT environment. We provide web and mail security, archiving, fax, networking and security software, and hosted IT solutions. We will keep pace as your business grows. And we’re always making our business solutions even better."