273
[LNS-luser-vpdnuser] password simple Hello
[LNS-luser-vpdnuser] service-type ppp
[LNS-luser-vpdnuser] quit
# Configure local authentication for the VPN user.
[LNS] domain system
[LNS-isp-system] authentication ppp local
[LNS-isp-system] ip pool 1 192.168.0.2 192.168.0.100
[LNS-isp-system] quit
# Enable L2TP.
[LNS] l2tp enable
# Configure the VT interface.
[LNS] interface virtual-template 1
[LNS-virtual-template1] ip address 192.168.0.1 255.255.255.0
[LNS-virtual-template1] ppp authentication-mode chap domain system
[LNS-virtual-template1] remote address pool 1
[LNS-virtual-template1] quit
# Create an L2TP group and specify the VT interface for receiving calls.
[LNS] l2tp-group 1
[LNS-l2tp1] tunnel name LNS
[LNS-l2tp1] allow l2tp virtual-template 1
2. Configure the VPN user host:
{ Configure the IP address of the user host as 2.1.1.1, and configure a route to the LNS
(1.1.2.2).
{ Create a virtual private network connection by using the Windows system, or install the
L2TP client software, such as WinVPN Client.
{ Complete the following configuration procedure (the procedure depends on the client
software):
# Specify the VPN username as vpdnuser and the password as Hello.
# Specify the Internet interface address of the security gateway as the IP address of the
LNS. In this example, the Ethernet interface for the tunnel on the LNS has an IP address of
1.1.2.2.
# Modify the connection attributes, setting the protocol to L2TP, the encryption attribute to
customized and the authentication mode to CHAP.
3. Verify the configuration:
# On the user host, initiate the L2TP connection. After the connection is established, the user
host can obtain the IP address 192.168.0.2 and ping the private IP address of the LNS
(192.168.0.1).
# On the LNS, use the display l2tp session command to check the established L2TP session.
[LNS-l2tp1] display l2tp session
Total session = 1
LocalSID RemoteSID LocalTID
647 1 1
# On the LNS, use the display l2tp tunnel command to check the established L2TP tunnel.
[LNS-l2tp1] display l2tp tunnel
Total tunnel = 1
LocalTID RemoteTID RemoteAddress Port Sessions RemoteName
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