I have a NETGEAR WGR614L and I needed to attach a tcp monitor pc (tcpdump) to one of its LAN ports. The fact the the router is a switch makes that not so trivial a task. 

The switch only forwards packets to the port where the destinaion MAC address is known.  As such, each connected network device only receives the packets which are destined for that specific device.

Expensive switches provide a functionality which is called “Port-Mirroring," “Span Port,” or “Monitor Port."  This feature copies all packets from another port to that monitor port.  Sadly, our WGR614L doesn't have that functionality built-in.

OpenVPN is used to build site-to-site VPNs with SSL/TLS protocol, or with pre-shared keys.

This article describes the procedure to configure your NETGEAR WGR614L as an OpenVPN server using DD-WRT firmware.

I am using the static key method to configure the server.  This guide also assumes that you have OpenVPN installed on your PC.

Step 1:  Generating Static Keys

At first, we generate a static key at our PC using the following method(s):

Unix:

In Unix based systems, we need to issue the following command to generate a static key:

openvpn –genkey –secret static.key

Remote Authentication Dial In User Service (RADIUS) is a networking protocol that provides centralized access, authorization, and accounting management for people or computers to connect and use a network service.

A RADIUS setup basically consists of an authenticator / RADIUS client, an authentication server and a user client.

One needs to perform the following steps on the NETGEAR WGR614L with DD-WRT firmware installed to configure it as a RADIUS client:

One of your readers requested a Version to Serial Number Cross Reference List to determine which version of the router one has based on the serial number of the router. I was also interested in finding out the same information. I was able to gather the following information by examining stock at local dealers, information provided by the NETGEAR Pre Sales Department and some additional information I had in my files.