Can multiple devices use the same port?
With port forwarding, the router looks at the port that incoming traffic arrives on and if it matches a port forward rule it will send it out to a specified IP address on the specified local port. They can work for any scenario where you need to forward to multiple devices on the same port.
Why does my wifi have 3 addresses?
This would indicate that the PC has connected (been rebooted?) 3 times and each time the router has assigned a different address even though it still has the previous addresses in its table. A router should normally reassign the same address so this may indicate a problem with the router.
Is the same port used for two different IP addresses?
Just as two different buildings may have a room 101, the rooms are not the same room. 10.1.2.3:1234 is a different port than 172.16.17.18:1234. The function of the port may be the same across IP addresses or protocols (e.g., IPv6 ports have the same functions as IPv4 ports, even though they are different protocols).
Is it possible to port forward to multiple IPs?
As everybody said simple port forwarding to multiple ip is not possible. But there are solutions based on whatever you are trying to accomplish. For example reverse proxy to send traffic to different web servers and configure listeners with the appropriate cert.
How many applications can use the same IP address?
With two IP addresses, you could have four applications using the same port number (2 addresses, each with the same port number for both UDP and TCP). You seen to think the IP address binds to the port, but it’s the other way around.
How is the port bound to the IP address?
The port is bound to the IP address by the application. If the combination of IP address and port are already taken, you get an error, but if the applications are using different IP addresses, there is no conflict.