What ports do I need to open on my firewall for filesharing if I have a requirement for remote users connected via a MPLS network to connect a network file share?
That thing you want to do is quite dangerous for your machine. Opening a port on your computer is not recommended because it can be an opportunity for an attacker to penetrate your system. If an attacker scans your machine with a tool, it will reveal all the open ports on your machine. The most common ports that are left open are for TCP, FTP, and SMTP.
They are open because there are services on the computer that uses them. If you open a port, it will appear among the open ports. An attacker can check what kind of service is using that port and what kind of exploit can be used to break it free. I suggest not opening a port.
If a program cannot access outside connection because the Windows Firewall is blocking it, unblock it instead of opening a port. This way, the port will only be opened when the program requires it or when you are using the program. It will be closed automatically when the application or service is exited. To unblock a program, click Start, Control Panel, “Network and Internet Connections”, and then Windows Firewall.
In Windows Firewall window, select Exceptions tab. Click Add Program.
In “Add a Program” dialog, select the program you want to exclude or unblock from Windows Firewall. If it’s not listed, click Browse, navigate to the location of the program, select the EXE file, and then click Open. Click OK all throughout.
And that’s it. The program is now unblocked from Windows Firewall. MPLS is the short term that refers to Multiprotocol Label Switching. It is a protocol used for shaping and speeding up network traffic flows. This protocol lets nearly all packets to be passed on at Layer 2, which is the switching level, instead of passing it up to Layer 3, which is the routing level.
