Port forwarding is a technique that is widely used to redirect computer traffic through selected ports between LAN computers (your local network) and remote computers (the internet).
In short, it is a process that allows you to receive network traffic through a port number of your choice and by making it accessible for others on the local network or the internet.
Usually, a VPN or proxy program is used to make this redirection. Still, it can also be done via hardware components such as a router, proxy server, or a firewall.
Learn about What is a Port Number?
To communicate over the Internet, packets of data are created and sent over the Internet. These packets contain the details of your request, which also includes the destination of your computer or device.
When a receiving host receives the request, a port number is usually appended to it (for example, 22.214.171.124:3195, where 126.96.36.199 is the IP and 3195 is the port). Unless 3195 is open at the router that is hitting 188.8.131.52, that traffic cannot go anywhere.
You can either open the port as previously stated, or use a VPN.
In port forwarding with a VPN, the intercepting application isn’t your router this time. It’s your VPN client. If you have a port forwarding addon with your VPN, you’re the only recipient of the traffic, and no further heavy lifting needs to be done.
You can learn more about how it works via the video below:
Finding and opening ports on your router is easy. Follow the steps:
Our Port Forwarding feature comes in pretty handy in lots of stuff that we do at home or at work. The following are some important use cases:
Port Mapping, exists in several forms. The most commonly used forms are mentioned below:
It is the most commonly used compared to the other types. It is usually employed to send data from a different client application on the same system. With Local Port Forwarding, you can connect from your local computer to another server easily. You can also get around firewalls that are blocking certain web pages.
It enables applications that are on the server-side of Secure Shell (SSH) connection to access services on the SSH’s client-side. There are other proprietary tunneling schemes as well that utilize remote port forwarding for the same general purpose.In simple words, it lets you connect from the server-side of a tunnel to a remote network service which is located at the tunnel’s client-side.
It lets you traverse through a firewall or NAT by using firewall pinholes. The goal of this method is to allow clients to connect securely with a trusted server which is acting as an intermediary for sending/receiving data to one or many destination servers.
Forwarding ports to a gaming console like Xbox or Playstation is absolutely 100% safe and secure. But if you forward ports to a consumer device like an IP camera or a DVR, then the people accessing it are the only risk until you've set up a password on the device.
Amplify your online gaming experience with PureVPN’s Port Forwarding add-on. Instantly get around the blocked ports restrictions and save your time by struggling to configure ports on your router manually. More benefits of PureVPN’s Port Forwarding add-on:
You can check if your port is open or not through port checking services like CanYouSeeMe.org and ismyportopen.com.
A challenge while setting up port forwarding manually through a router is that your online communications may not remain safe anymore especially if you forward too many ports. When forwarding ports, there are multiple online vulnerabilities that can be exposed when opening more ports than necessary, which is why you need a Port Forwarding VPN to secure your online activities as PureVPN will handle unauthorized access to other ports.
Also, hackers can't access your end devices through forwarded ports. It all depends upon the target's ports or how good is your router's firewall and how secure it is both internally and externally.
Find out the answer to this question: Is Port Forwarding Safe or Not?
They are quite the same. "Opening a port" is a technical process of allowing traffic to pass on that port, whereas "Port Forwarding" is a process of forwarding traffic received by one device on a given port to another device.
In some instances, it may reduce your ping. However, for some users, ping might escalate drastically. It all depends upon the server you're connecting to and how far is that server located from your physical location.
As you may know already, some applications and games require certain ports to be opened to function successfully. Port forwarding and port triggering can both be used for allowing devices to access services outside the network. However, their processes are slightly different.
Port forwarding allows external connections for an indefinite period of time, so it’s considered less safe as the ports are left open on the router. Port triggering, however, allows external connections for a specific period of time, thereby making it more secure and flexible than its counterpart.
UPnP, also known as Universal Plug and Play, is a protocol that solves some of the security issues raised by port forwarding. It allows apps on your devices to open ports when needed and close them once they’re done. It’s more convenient as it saves you from the hassle of opening and closing ports manually.
Learn more: What is UPnP?