3Com 10014299 manual Client-originated VPN Networking, Router-LACip pool 1 192.170.0.3

624CHAPTER 43: CONFIGURING L2TP

Figure 190 Connect to “Connection to 66046”

Client-originated VPN Networking

To determine the IP address assigned to your computer by the LNS, use the DOS-based command ipconfig.

I. Networking requirements

After connecting to the Internet, the VPN user originates request for connecting Tunnel. At receiving the request, LNS establishes a Tunnel with the VPN, so as to transmit data between the user and the company headquarters.

LAC (NAS) and LNS are connected to a 3Com router. They connect to the Internet through serial interfaces and transmit data through Tunnel. The PC named win2000 in installed with Windows2000. The Async2 interface and the PC are connected to a Modem, and the number are 660046 and 600040 separately.

II. Networking diagram

Figure 191 Networking diagram of client-originated VPN

PSTN	NAS	Router	Company
	Internet
			headquarters
VPNuser	LAC	LNS
	Tunnel

III. Configuration procedure

1Configuration at the LAC (NAS) side

a Configure the username and password (when dialing up in Windows2000)

[Router-LAC]local-user lac service-type ppp password simple lac

bConfigure address pool, and assign Internet address for the user.

[Router-LAC]ip pool 1 192.170.0.3 192.170.0.100