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REVERSE PORT FORWARDING WIZARD PC

Forwarding a port to a PlayStation or Xbox is safe.

This does sound secure because you are configuring the router and feeding it a specific port number. Port forwarding allows external computers to connect to your computer within a private network. An IP address has a purpose, but it uses the port number to determine what the purpose is, whether using a remote desktop or using the HTTPS page. Port numbers are always associated with an IP address, and they have a unique identifier number. The router represents the phone, and the computers within the network represent different extensions or departments. In a network, the IP address is similar to a phone number, and the port number is similar to an extension. The router will only consider the port number and send the request to the computer.

The router will send or receive the request to your IP address that has been previously configured for port forwarding. In a network, your friend contacts you through an external IP address and sends a request to the router. Likewise, your network works in the same way. The phone has done the job by redirecting your call to the sales department. The auto-attendant will ask your request and tell you to press a specific number like 100 to connect your phone to the sales department. Let’s say you call a company and want to talk to the sales department only. Your friend cannot connect to your computer if the router doesn’t know what to do with the incoming request. However, your router must be configured to know where to forward the request for port 3389. In this case, the remote desktop connection uses port numbers, such as 3389, to forward requests. The port number is a unique identifier that is used for services to exchange information.

REVERSE PORT FORWARDING WIZARD PC

But through port forwarding, you specify that your PC gets traffic to certain ports of your choosing, and your Xbox gets traffic to other ports, and the list goes on.įor instance, if your friend that is not on your LAN (Local Area Network) wants to control your computer remotely, then he or she needs to create a remote desktop connection and sends the request to your computer with a specific port number. This makes your computer accessible to another computer through your network, which is being used to filter traffic to multiple devices on your network. Port Forwarding allows computers over the internet to connect to a computer or server within a private home network. Don't forget to reload the service afterwards.Whether you have heard about port forwarding or not, we will try to answer this question in simpler words. It means you should have GatewayPorts yes in the sshd_config on bluehost. Specifying a remote bind_address will only succeed if the server's GatewayPorts option is enabled (see sshd_config(5)). An empty bind_address, or the address ‘ *’, indicates that the remote socket should listen on all interfaces. This may be overridden by specifying a bind_address. By default, TCP listening sockets on the server will be bound to the loopback interface only. In your case this part of man ssh seems important: -R port:host:hostport

Or identify the listening process (on bluehost) with sudo lsof -i TCP:2222 terminate or reconfigure it to make the port 2222 available.

Just make it greater than 1023 because regular users can't bind to well-known ports otherwise you will get the same warning regardless of whether the port is in use or not.

Change 2222 in your ssh invocation to some other port which is not in use on bluehost.

The output of netstat from bluehost indicates that something is already listening on port 2222 there. I get this exact warning when I attempt to use a port that is already taken on the remote side. Why does ssh -N -R 2222:localhost:22 result in a "Remote port forwarding failed for listen port" error? You want to use the greenuser credentials on the bluehost IP because the host you are loging into when you use port 2222 is really the greenhost. I was trying the following command for Step ssh -p 2222 Some of those results are shown in the image below.

I've performed several diagnostics to validate the required ports are open.

There are topics concerning this error message, however the resolutions given resolve root causes different than that of this particular instance because those resolutions do not resolve the error in this case.

Researched existing literature on Google, Stackoverflow, etc.

Question: Why does ssh -N -R 2222:localhost:22 result in a "Remote port forwarding failed for listen port" error? The objective is to establish a reverse tunnel with port forwarding in order to consistently ssh into a host behind a NAT router that has a dynamic private IP.