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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:
zShared Secret—A text-based secret that is used to authenticate the IPsec
tunnel (case sensitive).
zX.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