Join Mike Chapple for an in-depth discussion in this video ICMP, part of CompTIA Security+ Exam Prep (SY0-401): Network Security.
- The Internet Control Message Protocol (ICMP)…is the housekeeping protocol of the internet.…It performs a variety of important administrative functions.…The Ping command is one of the most basic…network troubleshooting commands available.…When a system sends a Ping command over the network,…the receiving system responds with an acknowledgement.…It's the equivalent of one system asking another,…"Are you there?", and the target…system responding, "Yes, I am."…Although, instead of asking these questions in English,…the Ping command uses the ICMP protocol.…
The "Are you there?" question is asked by sending a packet…known as an ICMP Echo Request.…The target system responds "Yes, I am.",…by sending an ICMP Echo Reply.…Let's try this from the command line of a terminal.…I'm going to go ahead and try pinging…the website of CompTIA, www.CompTIA.org.…My computer begins sending ICMP Echo Requests…in a continuous fashion.…CompTIA's web server responds with an Echo Reply…and each line that you see appearing…on the screen here is the receipt of an Echo Reply.…
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- Working with the TCP/IP suite
- Securing switches and routers
- Configuring firewalls
- Setting up virtual private networks (VPNs)
- Detecting and preventing network intrusions
- Implementing unified threat management
- Using public and private network addressing effectively
- Segmenting networks
- Virtualization and cloud computing
- Managing secure networks
Skill Level Intermediate
1. TCP/IP Suite
2. Network Security Devices
3. Designing Secure Networks
4. Cloud Computing and Virtualization
5. Managing Secure Networks
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