Linksys RVS4000 User Manual page 14

4-Port Gigabit Security Router with VPN
A DHCP server can either be a designated PC on the network or another network device, such as the Router. By
default, the Router's Internet Connection Type is Obtain an IP automatically (DHCP).
The PC or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to assign
IP addresses manually every time a new user is added to your network.
For DSL users, many ISPs may require you to log on with a user name and password to gain access to the
Internet. This is a dedicated, high-speed connection type called Point to Point Protocol over Ethernet (PPPoE).
PPPoE is similar to a dial-up connection, but PPPoE does not dial a phone number when establishing a
connection. It also will provide the Router with a dynamic IP address to establish a connection to the Internet.
By default, a DHCP server (on the LAN side) is enabled on the Router. If you already have a DHCP server running
on your network, you MUST disable one of the two DHCP servers. If you run more than one DHCP server on your
network, you will experience network errors, such as conflicting IP addresses. To disable DHCP on the Router, see
the Basic Setup section in "Chapter 6: Setting Up and Configuring the Router."
Chapter 2: Networking Basics
The Use of IP Addresses
LAN: the computers and networking products that
make up your local network
NOTE: Since the Router is a device that connects two
networks, it needs two IP addresses—one for the LAN,
and one for the Internet. In this User Guide, you'll see
references to the "Internet IP address" and the "LAN IP
address."
Since the Router uses NAT technology, the only IP
address that can be seen from the Internet for your
network is the Router's Internet IP address. However,
even this Internet IP address can be blocked, so that the
Router and network seem invisible to the Internet.
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