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Configuring Your Juniper Firewall for a Route Based LAN to LAN VPN When One Side Has a Dynamic IP Using Pre-shared Keys

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Article ID: KB4767 KB Last Updated: 29 Jun 2010Version: 5.0
Summary:
Route-based VPN - One Side has a Dynamic IP using Pre-shared Keys (SSG/ISG/NS)
Symptoms:

Solution:

This example assumes that the pre-shared secret used is netscreen. The lists below will show the proposals we will use for this example:

Site A

  • Untrust IP of device 1.1.1.1
  • Trust Network 10.1.1.0/24
  • Phase 1 Proposal pre-g2-3des-sha
  • Phase 2 Proposal g2-esp-3des-sha

Site B

  • DHCP (local id siteb.netscreen.com)
  • Trust Network 176.16.10.0/24
  • Phase 1 Proposal pre-g2-3des-sha
  • Phase 2 Proposal g2-esp-3des-sha
Note: In this article, Site A is the site with a static IP address, and the VPN is being built to Site B, which has a dynamically (DHCP) assigned IP address.

To configure your Juniper Firewall for a route based LAN to LAN VPN when one side has a dynamic IP using pre-shared keys, perform the following steps:

Step one: Configure Site A. For more information, go to Configuring Your Juniper Firewall Site A for a Route Based LAN to LAN VPN When One Side Has a Dynamic IP Using Pre-shared Keys.

Step two: Configure Site B. For more information, go to Configuring Your Juniper Firewall Site B for a Route Based LAN to LAN VPN When One Side Has a Dynamic IP Using Pre-shared Keys.
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