Firewalls are an essential part of network security, yet Gartner says 95% of all firewall breaches are caused by misconfiguration. In my work I come across many firewall configuration mistakes, most ...

Configuring Windows Firewall settings is one of the most fundamental security precautions. It is a built-in security feature that comes with all versions of Windows, acting as a barrier between your ...

This chapter looks at the management of firewalls. From the perspective of the small office/home user, the firewall is a single device that protects the home network from malicious traffic—it keeps ...

Firewalls are essential for restricting and controlling Internet traffic sent between the web and your company's network. You can further enhance the security of your LAN by having a strict firewall ...

Mike Chapple is associate teaching professor of IT, analytics and operations at the University of Notre Dame. Does your firewall rulebase remind you of that drawer in your kitchen where you throw all ...

Many enterprise networks require redundant HA (High Availability) infrastructure for key systems like network firewalls. This article demonstrates how you can use a combination of open-source packages ...

Netsh, short for Network Shell, is a command-line utility designed to assist IT administrators in configuring and viewing various network-related functions on Windows 11/10. This tool can also be ...

So far, in my previous articles on Nmap, we've looked at how the scanner can be used to map and audit a network, as well as track down noncompliant devices and services. But hackers can also use Nmap ...

Some consider it one of Microsoft's greatest blunders. With the release of Windows XP Service Pack 2 (SP2), Microsoft made the conscious decision to turn on the Internet Connection Firewall (ICF) for ...

iptables is the user-space tool for configuring firewall rules in the Linux kernel. It is actually a part of the larger netfilter framework. Perhaps because iptables is the most visible part of the ...