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VPN
L2TP/IPsec
In order to create a VPN tunnel on Windows XP
®
, you must use the L2TP/IPsec protocol. When
L2TP/IPsec is enabled, the IOLAN will listen for L2TP/IPsec VPN tunnel requests.
When you enable L2TP/IPsec, you are requiring that all access to the IOLAN go through the
L2TP/IPsec tunnel, so you must configure any exceptions first see (
Exceptions) for more information
on exceptions) or you will not be able to access the IOLAN through the network unless you are
configured to go through the L2TP/IPsec tunnel (you can still access the IOLAN through the Console
port).
Field Descriptions
Configure the following parameters:
Allow L2TP/IPsec
connections
When enabled, the IOLAN listens for L2TP/IPsec VPN tunnel connections.
Note: to allow non-VPN tunnel connections to the IOLAN, you must create
entries in the VPN Exceptions list.
Default: Disabled
Local IP Address If the IPsec local address is set to 0.0.0.0, the IOLAN will listen for
L2TP/IPsec connections on (the IP address of) the network interface
assocaiated with (ie: on the same network as) the IOLAN’s default gateway. If
no default gateway exisits, the IOLAN will not listen for L2TP/IPsec
connections.
Default: 0.0.0.0
Authentication
Method
Specify the authentication method that will be used between VPN peers to
authenticate the VPN tunnel.
Data Options:
z Shared Secret—A text-based secret that is used to authenticate the IPsec
tunnel (case sensitive).
z X.509 Certificate—X.509 certificates are used to authenticate the IPsec
tunnel. When using this authentication method, you must include the
signing authority’s certificate information in the SSL/TLS CA list and
download it to the IOLAN.
Default: Shared Secret