Firewall and NAT Settings

In some cases you may be required to adjust your firewall and NAT configuration to enable VoIP to work reliably.

Please see specific instructions on some popular routers and firewalls below:

• DrayTek Vigor

To come:

• Cisco
• Juniper

Guidance for SIP trunking:

• SIP Trunk Firewall and NAT Guidance

Guidance for Hosted VoIP:

• Hosted VoIP Firewall and NAT Guidance