What are the necessary configurations to make a local server accessible externally under a specific domain name?

To make a local server accessible externally under a specific domain name, you need to configure your domain's DNS settings to point to your public IP address, set up port forwarding on your router to direct incoming traffic to your local server's IP address and port, and ensure that your server's firewall allows incoming connections on the specified port. 

// Example PHP code for setting up port forwarding on a router
// Replace IP_ADDRESS with your local server's IP address and PORT_NUMBER with the port your server is running on

$routerIP = "ROUTER_IP_ADDRESS";
$routerUsername = "ROUTER_USERNAME";
$routerPassword = "ROUTER_PASSWORD";

$localServerIP = "LOCAL_SERVER_IP_ADDRESS";
$localServerPort = "LOCAL_SERVER_PORT";

$command = "sshpass -p $routerPassword ssh $routerUsername@$routerIP -t 'sudo iptables -t nat -A PREROUTING -p tcp --dport $localServerPort -j DNAT --to-destination $localServerIP:$localServerPort'";
exec($command);

Keywords

PHP server configuration domain name port forwarding DNS settings

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