At our place of business we have a 15 PC LAN with a connection to our Corp. Office 2000 plus miles away thru our router doing a VPN thru degraded telco copper. The telco company's DSL connection offers only .5mbps service cause we have poor copper, or the length is to far from the Central Office to provide us with decent internet speed. We use a proxy server IP address to access the internet. The proxy server is also 2000 miles away. Needless to say our internet service is very slow. At our building we have a fast cable modem just installed. The cable modem offers 10mbps download speed!
Question is, what is the best way to bring in the high speed internet cable service available to our office and hook it into our 48 port switch so business requests (servers and devices with known & static IPs operating on the company's 12.16.1.xxx subnet) will continue to access the LAN-WAN setup, while any google requests, or typical internet requests go thru the local hi speed cable service we now have available to us? We currently have a single PC hooked up to the high speed cable, but off the company LAN-WAN. The cable service is based on a 192.168.1.XXX subnet.
How can we marry up the fast internet cable service into our switch w/o changing any of the current router settings that disperses the company business, or the company data?