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Configure L2TP over IPSec on NetScreen Remote

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Article ID: KB6671 KB Last Updated: 09 Jun 2010Version: 5.0
Summary:
Configure L2TP over IPSec on NetScreen Remote
Symptoms:
Environment:
  • L2TP over IPSec configuration
  • IPPool on different subnet than trust network
  • VPN set up with transport mode
  • NetScreen-Remote "Remote Party Identity and Addressing" set to the NetScreen trust network L2TP over IPSec
  • NetScreen Remote
  • NetScreen device is L2TP server
  • Windows ME / 98
Symptoms & Errors:
  • Cannot connect to L2TP tunnel
  • Cannot set phase 2 for transport mode
Solution:
L2TP over IPSec using NetScreen Remote is supported on versions 5.1.3 and higher:
  1. Launch Security Policy Editor
  2. Add a new connection (by clicking the icon on the upper left hand corner)
  3. Under Remote Party Identity and Addressing:
    1. Set ID Type to IP Address
    2. Enter the NetScreen's untrust interface IP in the IP field
    3. Select UDP Protocol, and choose Port L2TP
    4. Deselect Connect using Secure Gateway Tunnel
  4. Click Security Policy and click Aggressive Mode
  5. Expand the Security Policy icon, and expand the Key Exchange (Phase 2)
    1. Click Proposal 1
    2. For the Encapsulation field, select Transport
 
A tech note has been written on this subject. Click Windows 98 and ME with NetScreen Remote L2TP/IPSec VPN to NetScreen
 

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