Firewalls are one of the most fundamental security components in our modern networks, but not all firewalls are created equally. In this module, you’ll learn about common features of modern firewalls, such as network-layer and application-layer firewalls, stateful vs. stateless operation, content filtering, signature identification, and zone-based security.
As network professionals, we rely on some core security devices to protect our network. In this video, you’ll learn about network-based firewalls, host-based firewalls, IDS/IPS, and VPN concentrators.
CompTIA Network+ N10-004: 6.1 – Security Devices Read More »
If you’re managing a network, you’ll need a comprehensive toolkit to keep things running at peak efficiency. In this video, you’ll learn about the tools that will make your life a much better place. We’ll discuss cable testers and certifiers, TDRs, multimeters, punch-down tools, voltage event recorders, and much more.
The network is a constantly moving river of information, and it may be necessary to occasionally test the water as it flows by. In this video module, you’ll learn the reasons for scanning your network and the different technologies available to gather information. We’ll also dive into packet analyzers, intrusion detection systems, intrusion prevention systems, and port scanners.
CompTIA Network+ N10-004: 5.2 – Network Scanners Read More »
Many of the most powerful network troubleshooting tools can be found at the command line of your operating system. In this video, you’ll learn the importance of command line tools such as traceroute, ipconfig, ifconfig, ping, arping, nslookup, dig, mtr, route, nbtstat, and netstat.
CompTIA Network+ N10-004: 5.1 – Command Line Tools Read More »
The lack of a physical infrastructure can make troubleshooting a wireless network a bit more complex than traditional wired networks. In this video, you’ll learn how to troubleshoot some of the most common wireless network issues, such as interference, encryption mismatches, frequency problems, bounce, and antenna placement.
CompTIA Network+ N10-004: 4.7 – Troubleshooting Wireless Issues Read More »
Some network problems take a village. In this module, you’ll learn how to identify major network issues that will require an escalation to additional members of your team including switching loops, routing loops, route problems, proxy ARP configurations, and broadcast storms.
CompTIA Network+ N10-004: 4.7 – Identifying Issues for Escalation Read More »
Often, some of our most irritating network problems are related to logical configuration settings. In this module, you’ll learn how to check port speed, duplex, VLAN configurations, DNS settings, and much more.
CompTIA Network+ N10-004: 4.7 – Troubleshooting Common Logical Connectivity Issues Read More »
The quality of your copper and fiber infrastructure affects everything that traverses your network. In this module, you’ll learn the importance of troubleshooting physical issues like crosstalk, attenuation, shorts, opens, and impedance mismatches.
CompTIA Network+ N10-004: 4.7 – Troubleshooting Common Physical Connectivity Issues Read More »
When a crisis is underway, it can be difficult to follow a logical path to help resolve the problem. In this video, you’ll learn how a detailed methodology can help you through each phase of the troubleshooting process from gathering of information through the resolution and documentation.
CompTIA Network+ N10-004: 4.6 – Network Troubleshooting Methodologies Read More »
