We have a block of 5 static IP's from ATT and was wonder how to get working, they are 108.x.x.x addresses.
If I set the Sonicwall wan port to DHCP it pulls a public IP of 76.x.x.x from the 2wire.
I went ahead and used this IP for a test in our site-to-site config and it worked until a reboot of the devices.
But I want to use IP's from our 106.x.x.x range.
I tried seting the LAN on the 2wire with an IP from the 106.x range and the WAN port of the Sonicwall with another one and that wasn't working. Just trying to figure out the logic in what it is doing. If the 108.x address are nat'd to the 76.x address etc.
Re: 2wire static IP's with Sonicwall for site-to-site VPN
First, organize your IP addresses from the 108.x.x.x block. You were given a block of 8. I will use 0-7 to illustrate this example, but replace those numbers with the ones you were given:
108.x.x.0 - Network address, unusable 108.x.x.1 - Available 108.x.x.2 - Available 108.x.x.3 - Available 108.x.x.4 - Available 108.x.x.5 - Available 108.x.x.6 - Use for the RG address 108.x.x.7 - Broadcast address, unusable
1. Check "Add Additional Network". 2. In the router address field, put in the RG's IP address from your 108.x.x.x block (in my example, it would be the 108.x.x.6 address, but substitute the address from your block). 3. For the subnet mask, use 255.255.255.248. 4. Don't check the Auto Firewall Open box. 5. Click Save.
Now, on your Sonicwall, configure the WAN interface to be statically assigned, use one of the available 108.x.x.x addresses, such as (in my example, 108.x.x.1 -- substitute an available address from your block). Use 255.255.255.248 for the subnet mask, 108.x.x.6 for the default gateway (that would be for my example -- substitute your RG address from your block here), and for DNS addresses use one of:
1. 126.96.36.199 and 188.8.131.52 if you want to use AT&T's DNS servers
2. 184.108.40.206 and 220.127.116.11 if you want to use Google's DNS servers
3. 18.104.22.168 and 22.214.171.124 if you want to use OpenDNS's servers
Verify that the computers behind the Sonicwall can now access the internet.