Find out what your PC is talking to
Four free tools from the people who make NetSecWall. They answer the questions people ask when something on their network looks odd. One email address unlocks all of them, and the port pages are open to everyone.
Netstat explainer
Paste what netstat or PowerShell prints and see which programs talk to the internet, what each open port is, and what deserves a closer look. What you paste is read in your browser.
Open netstat explainer →Email to unlockIP reputation check
Is an address on a threat list? Checks it against the same six lists NetSecWall uses, and shows who owns it and whether it is a VPN, proxy, Tor or hosting address.
Open ip reputation check →Address free, report by emailWhat is my IP?
Your public IP address, straight away. Then what websites learn from it: your provider, rough location, and whether it looks like a VPN or is on a threat list.
Open what is my ip →Open to everyoneWindows port lookup
What 59 common ports are for on a Windows PC, which Windows service owns each one, and whether to block it.
Open windows port lookup →