The Windows Defender Firewall can be configured to allow or block programs on a computer from accessing network or Internet resources. It also allows or blocks connections to and from other computers ...

A Port basically serves as an interface between your computer and the internet or other computers in the network. Every communication over the web is exchanged using these ports, so they are an ...

Firewalls are devices that help keep your computer safe from threats on networks. Windows includes a program called Microsoft Firewall to maintain system security. There may be occasions when you need ...

Portmaster isn’t just a cross-platform network monitor — it’s also a very powerful security tool that can help to lock down your desktops and block things like ads, trackers and malware. I’ve been ...

Netstat, the TCP/IP networking utility, has a simple set of options and identifies a computer’s listening ports, along with incoming and outgoing network connections. This data can be very helpful if ...

Remote Desktop allows you to access your computer from a different computer. You can open the Remote Desktop port only on your computer to allow it to be accessed only on your local network or open it ...

A flaw in Windows Firewall may prevent users from seeing all the open network ports on a Windows XP or Windows Server 2003 computer. The flaw manifests itself in the way the security application ...

OK, I have a Win 2k AS server as my firewall/gateway/etc.<P>I want to play an online game called Underlight (www.underlight.com has some info in it's faq about the ports I will mention).<P>It needs ...

Just got laptop, and am trying it outside of my home LAN for the first time. Normally I am behind a NAT router. Just went to grc.com (Shield's up) to see how the XP SP2 firewall is holding up. Telnet ...