HP TMS zl Module Security Administrator's Guide

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Configuring a VPN on the HP TMS zl Module
GRE Tunnels
Figure 4-288. Example GRE over IPsec VPN
3. For Traffic Selector, configure these settings:
a. For Protocol, specify 47 (GRE).
b. For Local Address, specify the local gateway address for the GRE
tunnel (indicated by 1 in the figure and not the IP address on the tunnel
subnet).
c. For Remote Address, specify the remote gateway address for the GRE
tunnel (indicated by 3 in the figure and not the IP address on the tunnel
subnet).
4. For Proposal, select a previously configured IPsec proposal.
The IPsec proposal specifies the IPsec mode, IPsec protocol, and the
authentication and encryption algorithms that secure the VPN connec-
tion. See “Create an IPsec Proposal for a GRE over IPsec VPN that Uses
Manual Keying” on page 4-377.
5. Click Next. The Add IPsec Policy (step 2) window is displayed.
6. For Key Exchange Method, select Manual.