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Setting up Wireless Data Privacy
Figure 7-8. The Certificates tab showing an installed certificate
Step 13.
Immediately create and save a backup of your system. This saves both the private key and the
saved certificates. See
“Backing Up and Restoring the System Configuration” on page 8-13 for
information on backing up your system.
Caution: Be sure to back up your system immediately. This is the only way to ensure that the
certificates and keys can be restored if your system becomes corrupted. If the private key is
lost, certificates based on that key will become invalid.
IP Address Assignment for Tunneling
If you plan to use IPSec or PPTP/L2TP for Wireless Data Privacy, you must configure the method by
which your Access Controllers will assign IP addresses to the client.
Note: The same tunneling address assignment method is used by both PPTP/L2TP and IPSEC.
Since PPTP and L2TP were originally designed as remote access protocols, used by traveling clients to
access their home network, the PPTP and L2TP protocol assigns an IP address to the client computer. But
in a 700wl Series system environment, a client usually obtains an IP address before enabling PPTP and
L2TP encryption. This results in two IP addresses: an initial one that describes the PPTP or L2TP tunnel,
and one that describes the actual IP address used by the client (the inner tunnel).
An HP ProCurve Access Controller can be configured to assign this inner-tunnel address in one of two
ways: it can either assign an address from a range of addresses pre-specified by the network
administrator, or it can request an external DHCP server to assign an address.
HP ProCurve Secure Access 700wl Series Management and Configuration Guide 7-11