Who is G12?

G12 Communications is a cloud based provider of Unified Communication services. G12 was founded by two technology executives with over 30 years of experience in the communications industry. The founders started G12 Communications based on a vision of making next generation communication services easy to access, cost effective and widely available to all enterprise customers.

Sonicwall Firewall basic provisioning for G12

This article will guide you on how to configure your Sonicwall firewall router’s settings.

IMPORTANT:  Changing your router’s configuration is critical.  For more information in configuring your router’s settings, contact your router manufacturer for advanced support.

Accessing the router interface

Step 1: 
Enter the router’s IP address in the address bar of your web browser.

NOTE:   To learn how to check your router’s IP address, refer to your router documentation or contact your router manufacturer for support.

Step 2: 
Enter your router’s username and password.

Configuring the SonicWall Router‘s Firewall Settings

Step 1:
Go to Network > Services then click Add.

Name: G12 DMZ Ports
Protocol: UDP(17)
Port Range: 1000-65500
Sub-Type:  None

Step 2:
Go to Address Objects then click Add.

Name: G12 Primary
Zone Assignment: WAN
Type: Range
Starting IP:
Ending IP:

Name: G12 Secondary
Zone Assignment:  WAN
Type: Range
Starting IP:
Ending IP:

Name: G12 NTP
Zone Assignment:  WAN
Type:  Range
Starting IP:
Ending IP:

Step 3:
Go to  Firewall then click Add.

Action: Allow
From Zone: LAN
To Zone:  WAN
Service:  G12 DMZ Ports
Source: Any

Destination: G12 Primary
Users Allowed:  All
Schedule:  Always On
Enable Enable Logging
Enable Allow Fragmented Packets

Action: Allow
From Zone: LAN
To Zone:  WAN
Service:  G12 DMZ Ports
Source: Any

Destination: G12 Secondary
Users Allowed:  All
Schedule:  Always On
Enable Enable Logging
Enable Allow Fragmented Packets

Action: Allow
From Zone: WAN
To Zone:  LAN
Service:  G12 DMZ Ports
Source: G12 Primary
Destination: Any
Users Allowed:  All
Schedule:  Always On
Enable Enable Logging
Enable Allow Fragmented Packets

Action: Allow
From Zone: WAN
To Zone:  LAN
Service:  G12 DMZ Ports
Source: G12 Secondary
Destination: Any
Users Allowed:  All
Schedule:  Always On
Enable Enable Logging
Enable Allow Fragmented Packets

Action: Allow
From Zone: WAN
To Zone:  LAN
Service:  G12 DMZ Ports
Source: G12 NTP
Destination: Any
Users Allowed:  All
Schedule:  Always On
Enable Enable Logging
Enable Allow Fragmented Packets

Step 4:
Go to the VOIP Tab.
Uncheck Enable Consistent NAT
Uncheck Enable SIP Transformation
NOTE:  If LAN to WAN and WAN to LAN are already setup to (Source: ANY, Destination: ANY, there’s no need to do the  settings)