IP forwarding enables one workstation to sit on two LANs and to act as a gateway forwarding IP packets from one LAN to another. IP forwarding is also referred to as 'bridging' networks.
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Port Forwarding
Refer to the following URL http://www.freebsdforums.org/install-freebsd-7-i386/
ip route {destination prefix} {destination prefix mask} {interface OR forwarding router's IP address}
Short answer... yes. There is a different method - however i will have to update this at another time. sorry. But if you were just looking for a yes or no answer, then the answer is yes. "that is, the most logical and efficient way for port forwarding"
To set up port forwarding on PTCL, first, log in to your router's web interface by entering its IP address in a browser. Use your admin credentials to access the settings. Navigate to the port forwarding section, usually found under "Advanced" or "NAT" settings, and enter the internal IP address of the device you want to forward ports to, along with the specific ports you wish to open. Save the changes and restart the router if necessary to apply the new settings.
A Layer 3 switch uses IP addresses to make forwarding decisions. It examines the destination IP address in the packet's header to determine the best path for forwarding. Additionally, it may utilize routing tables, which contain network prefixes and associated next-hop addresses, to efficiently route packets between different subnets. This enables Layer 3 switches to perform both switching and routing functions within a network.
mapping name-to-IP addresses for internal hosts forwarding name resolution requests to a caching-only server
You access your router's configuration page. Then, you go to the page that has to do with the forwarding (Gaming,Applications,Security,etc). In there you type the port you will forward, TCP or UDP, and for which IP address.
Need clarification from author.
It has a lot of functions and features such as auto attendant, call forwarding, call logs, caller ID, voicemail and more which is not available from traditional telephones.
To change your dedicated CS server's IP address from 10.0.0.x to a public IP, you need to configure your router's port forwarding settings to direct traffic to your server's local IP. You can also assign a static IP to your server within your local network settings to ensure it doesn't change. Finally, if you're using a hosting service, you may need to select a different server location or IP from their control panel.