Simplifi Contact - Recommended SonicWall Configuration

Create a new Address Object:
1. 162.252.248.0/22 - the subnet mask of /22 is 255.255.252.0
2. Name the Address Object (in this example, "WLC_VOIP")
Create a new Service Object:
1. Enable ports 5060 - 65535 of UDP traffic
2. Name the Service Object (in this example, "VOIP_PORTS")
Create 2 Firewall Access Rules:
1. From LAN to WAN
2. Source - Any
3. Destination - WLC_VOIP
4. Service - VOIP_PORTS
5. Allow
6. Advanced Tab - Set UDP Timeout to 3600 seconds
From WAN to LAN
1. Source - WLC_VOIP
2. Destination - Any
3. Service - VOIP_PORTS
4. Allow
5. Advanced Tab - Set UDP Timeout to 3600 seconds

SonicWalls are a common firewall deployed on many business networks. We need to ensure that the LAN subnet those phones reside on can seamlessly communication with our servers without dropped/blocked packets or jitter/delay.