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Apr 02, 2020 How to Troubleshoot a Router (And Find Out If You Need a Jun 30, 2019 Your Router's Security Stinks: Here's How to Fix It | Tom
If I assume that your "Chromebox" and your printer are both connected to the LAN side of your router, then the router and it's ports are not a part of the issue. What the router does for you is connect your LAN (local area network) to the internet, and allow the single internet address to be shared by all your devices - the router will, by
Port Checker is a simple and free online tool for checking open ports on your computer/device, often useful in testing port forwarding settings on a router. For instance, if you're facing connection issues with a program (email, IM client etc) then it may be possible that the port required by the application is getting blocked by your router's How to Check Open TCP/IP Ports in Windows Jul 03, 2017
5 Ways to Check if a Port Is Opened - wikiHow
Check if Your Home Router is Vulnerable Apr 11, 2017 WhoIsMyDNS is a free way to see if your router has been hacked May 02, 2019