5
Cisco RV120W Administration Guide
92
Configuring Virtual Private Networks (VPNs)
and Security
This chapter describes VPN configuration, beginning with the
“Configuring
VPNs” section on page 92
.
It also describes how to configure router security, beginning with the
“Configuring
Security” section on page 107
.
The following sections are covered:
•
Configuring VPNs, page 92
•
Configuring a Basic VPN, page 93
•
Configuring Advanced VPN Parameters, page 94
•
Configuring Security, page 107
Configuring VPNs
A VPN provides a secure communication channel (“tunnel”) between two gateway
routers or a remote PC client and a gateway router. The following types of tunnels
can be created:
•
Gateway-to-gateway VPN—Connects two or more routers to secure traffic
between remote sites.
•
Remote Client (client-to-gateway VPN tunnel)—A remote client, such as a
PC running VPN client software, initiates a VPN tunnel. The IP address of the
remote PC client is not known in advance. The gateway acts as responder.
•
Remote client behind a NAT router—The client has a dynamic IP address
and is behind a NAT Router. The remote PC client at the NAT router initiates
a VPN tunnel. The IP address of the remote NAT router is not known in
advance. The gateway WAN port acts as a responder.