Recommended Firewall Settings
Below are the recommended settings to provide you the best experience for using your JabberTel VOIP Service:
**Note: Not all settings will apply to every firewall
- Ensure there is no Double NAT (there should only be one router on the phone network)
- Make sure SIP ALG / SIP Transformations are set to Disabled
- Add Inbound (WAN to LAN) and Outbound (LAN to WAN) Firewall Access Rules to allow all traffic to and from the following range of IP addresses:
63.251.144.210
63.251.144.211
63.251.144.212
63.251.144.213
63.251.144.214
63.251.144.215
63.251.144.216 - Set the UDP Timeout to 300 Seconds.