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Virtual Private Networks (VPN)
iii. Paste or type the configuration data in the format of a pppd options file:
(config vpn l2tp lns lns_server)> custom config_file data
(config vpn l2tp lns lns_server)>
7. Save the configuration and apply the change
(config)> save
Configuration saved.
>
8. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
L2TP with IPsec
L2TP is commonly used in conjunction with IPsec in transport mode (to provide security).
Your IX20 supoorts L2TP with IPsec by configuring a transport-mode IPsec tunnel between the two
endpoints, and then an L2TP tunnel with its LNS and LACconfigured the same as the IPsec tunnel's
endpoints. See
Configure an IPsec tunnel
Note
The IX20 does not currently support the configuration of IPsec protocol/port traffic selectors.
This means that you cannot restrict traffic on the IPsec tunnel to L2TP traffic (typically UDP port
1701).
While multiple L2TP clients are supported on the IX20 by configuring a separate LNS for each client,
multiple clients behind a Network Address Translation (NAT) device are not supported, because they
will all appear to have the same IP address.
Show L2TP tunnel status
Web
Show the status of L2TP access connectors from the WebUI
Log into the IX20 WebUI as a user with full Admin access rights.
1. On the menu, select Status. Under VPN, select L2TP > Access Connectors.
The L2TP Access Connectors page appears.
2. To view configuration details about an L2TP access connector, click the (configuration) icon
in the upper right of the tunnel's status pane.
Show the status of L2TP network servers from the WebUI
Log into the IX20 WebUI as a user with full Admin access rights.
1. On the menu, select Status. Under VPN, select L2TP > Network Servers.
The L2TP Network Servers page appears.
2. To view configuration details about an L2TP network server, click the (configuration) icon in
the upper right of the tunnel's status pane.
IX20 User Guide
for information about configuring an IPsec tunnel.
L2TP
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