Tag: Network Security

Understanding default gateway limitations in computer networks
CCNA November 1, 2019

Default Gateway Limitations: Impact on Connectivity and Performance

Hosts at the access layer of a hierarchical network take advantage of the alternate default gateways. If a gateway (router interface) fails, the hosts configured with that gateway are cut off from outside networks. A method is needed to provide alternate default gateways in switched networks where two or more routers are connected to the […]
Asad Ijaz Read More
A graphic titled "Evolution of Malware and Network Defenses" featuring four icons and labels. From left to right: a floppy disk icon labeled "1986 Brain Virus," a worm icon labeled "2003 Network Worms," a brain icon labeled "2024 AI Malware," and a padlock icon labeled "Network Defense." The background is dark with circuit-like patterns.
Cyber Security September 13, 2019

What is Malware and Malicious Software? (Updated 2025)

Updated: October 19, 2025—Includes latest threats and network defenses. Malware, or malicious software, is a program or file designed to disturb computer processes and operations or gain unauthorized entry to the computer system, often via network protocols like RDP or SMB, without the user’s knowledge or permission. Malware has become a common term for all […]
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