From the course: CompTIA Security+ (SY0-601) Cert Prep: 8 Network Security Design and Implementation

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Ping and traceroute

Ping and traceroute

- [Instructor] Command line network tools provide a quick and easy way to access network configuration and troubleshooting information. Let's take a look at a few key commands that you should know as you prepare for the exam. The ping command allows you to check whether a remote system is accessible. It works using the Internet Control Message Protocol, or ICMP. The system that initiates the ping sends an ICMP echo request packet to the target system. This packet is the equivalent of saying, hello, are you there? The remote system then responds to that ping request by sending back an ICMP echo reply. This is the equivalent of answering that question with yes, I'm here. When you receive a successful response to your ping request, you know that network connectivity between the two systems is working properly. This is especially helpful if you're having connectivity issues and aren't sure where the issue resides. For…

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