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We have a LAN that is a router and a couple of hubs and there is one internet modem connected to that. In order to allow personal computers to have internet access, but not have LAN access, I have been linking a second router via one of the hubs ports so that &nbsp;we could have a separate network and all share the same internet modem. I would like to know about security. &nbsp;The reason for the second router is simply so that others can use the internet without being on our company LAN. &nbsp;Hopefully I am making sense. This is a small home based company and the LAN is for the SBS and workstations. The second router is for personal computer use. &nbsp;By doing it this way, am I keeping the personal computers separate and segregated from the company LAN?
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We have a LAN that is a router and a couple of hubs and there is one internet modem connected to that. In order to allow personal computers to have internet access, but not have LAN access, I have been linking a second router via one of the hubs ports so that  we could have a separate network and all share the same internet modem. I would like to know about security.  The reason for the second router is simply so that others can use the internet without being on our company LAN.  Hopefully I am making sense. This is a small home based company and the LAN is for the SBS and workstations. The second router is for personal computer use.  By doing it this way, am I keeping the personal computers separate and segregated from the company LAN?

adding a second router to a LAN to segregate personal from business

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).