Why is my dynamically assigned local ISP not working for the IPsec site to site VPN tunnel?

Solution #00006954

Scope: 

 NG Firewall, Firmware 5.4.X

Answer:

If you configure a Site to Site IPsec tunnel, using a local dynamic interface (DSL, DHCP), the service will not bind to those IPs, unless you do the following.

Tech library suggest the following:

0.0.0.0/0 is incorrect since NG-admin will not allow you to enter ?/0? ? the entry should just be ?0.0.0.0?

Also, in order to get this to work, you need to enable the ?Use IPSec dynamic IPs? options located in the ?VPN Server Settings?:

1. Open the VPN Settings page (Config > Full Config > Box > Virtual Servers > your virtual server > Assigned Services > VPN-Service > VPN Settings).

2. Click the ?Click here for Server Settings?? blue hyper link.

3. Click the Advanced tab

4. In the ?IKE Parameters?, change the ?Use IPSec dynamic IPs? option to ?Yes?

5. Click ?OK? Send changes and Activate.