Sending queries to servers on the Internet in order to obtain information about their services and level of security. On Internet hosts (TCP/IP hosts), there are standard port numbers for each type of ...

A recent update to an ad block filter list now allows the uBlock Origin extension to block most of the known sites that perform port scans of your local Windows computer. A few weeks ago, we reported ...

I'm looking for an online port scanner that lets me give it an IP and list of ports, and tells me if ports are filtered or closed. (like how nmap mentions filtered or closed) GRC shields up refers to ...

This month marks the 20th anniversary of Nmap, the open-source network mapping tool that became the standard used by many IT professionals, but that can be a bit much if you only need to do general ...

If you're smart and you're connected to the net, you're concerned about computer security. Open ports on your computers are invitations to criminal hackers and other evildoers to wreak havoc - and if ...

Hi, these last days I have been having trouble with my internet, and when I checked my router logs I got this: Xmas port scan attack from WAN (ip:69.164.26.100) detected. Xmas port scan attack from ...