Sonicwall
Current Status
Possibly compatible after changes
Suggestions
Firmware v5.8.1.12 or lower, Disable SIP ALG
Comments
Firmware v5.8.1.13 and higher contain a bug that causes issues with incoming calls on Sonicwall routers and firewalls. We recommend customers set enable ‘Consistent NAT’ (check the box) and disable ‘SIP Transformations’ (uncheck the box). Ensure that the MTU is set correctly for your ISP.
Go to Firewall Settings → BWM
Enable Egress and Ingress to your ISP settings, verify with a speed test.
Select the Firewall Settings → Edit LAN → WAN Rule → AdvancedTCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 1800
Whitelisting
Select the Firewall → Access Rules and add a new rule with the following:
Service: Any
Source: WAN, Address Range 167.94.41.0 to 167.94.41.255
Destination: LAN, Address Range * to *
Comment: VOIPservice1
If there is an option for ‘Allow Fragmented Packets’ then please enable this option.
TCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 1800
Select the Firewall → Access Rules and add another new rule with the following:
Service: Any
Source: WAN, Address Range 15.222.191.147
Destination: LAN, Address Range * to *
Comment: VOIPservice2
If there is an option for ‘Allow Fragmented Packets’ then please enable this option.
TCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 1800
Select the Firewall → Access Rules and add another new rule with the following:
Service: Any
Source: WAN, Address Range 3.96.120.201
Destination: LAN, Address Range * to *
Comment: VOIPservice3
If there is an option for ‘Allow Fragmented Packets’ then please enable this option.
TCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 1800
NOTE: If you are uncomfortable with opening your firewall to our subnets, please at minimum forward to our Core IP's:
- 167.94.41.4
- 167.94.41.34