Networks at their most fundamental level use packets to transfer information between computers. In this video, learn about packets and how they are used as the building blocks of the protocols used on networks.
- [Instructor] There are times when we might want … to take a deeper look at what's happening … in the lowest level of our networks. … If we think an intruder is in our network, … we might want to look for them … forcing their way into our systems. … If we're concerned that, somehow, … malware has got into one of our systems, … we might want to look for signs … that it's trying to connect … to its command and control servers. … Or, we might just want to do a health check … for unwanted network activity, … due to noisy system configurations. … Before we start looking at a tool to do this, … we need to understand the basics of networking. … If you're already familiar with networking, … you might want to skip on … to the next section in this module. … Almost all networks nowadays use the Internet Protocol, … which provides a set of communication methods. … Networks carry data, … and this data is carried … in an application level protocol … such as HTTP and HTTPS, … the Hypertext Transfer Protocol used with websites; …
- Hackers and the kill chain
- Viruses, spyware, and adware
- Detecting malware with Windows Defender
- Using Windows Firewall and Linux iptables
- Scanning with Nmap
- Monitoring network communications with Netcat
- Combating application-level threats
- Scanning a website to check for vulnerabilities
- Capturing intruders through packet inspection
Skill Level Beginner
Insights from a Cybersecurity Professionalwith Mike Chapple32m 15s Intermediate
1. Why Cybersecurity?
4. Network Scanning
5. Network Connections
6. Vulnerability Scanning
7. Web Applications
8. Monitoring Packets
Next steps1m 27s
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