Planet MH-2300 User Manual page 164

Step 7. VoIP communication is available between external and internal users
through the port mapping setting.
The Deployment of VoIP Communication through Port Mapping
4.7.1.4 Using Multiple Policy-managed Servers to Provide
HTTP, POP3, SMTP, and DNS Services
Step 1. Run multiple servers separately on 192.168.1.101, 192.168.1.102,
192.168.1.103, and 192.168.1.104, and resolve the domain name
using an external server to provide multiple services.
Gigabit Multi-Homing VPN Security Gateway
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MH-2300