TMS zl Management and Configuration Guide ST.1.2.100916

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Virtual Private Networks
Configure a Windows XP SP2 Client for L2TP over IPsec
6. Right-click ProhibitIpSec and click Modify.
7. For Value, type 1.
Figure 7-356. Windows XP—Edit DWORD Value Window
8. Close the registry editor and restart the computer.
9. Click Start > Run.
10. Type secpol.msc and click OK.
11. Click IP Security Policies on Local Computer in the left pane.
Figure 7-357. Windows XP—Local Security Settings Window
12. Click Action > Create IP Security Policy.