DNS Cache Poisoning: A Threat to Network Security

DNS cache poisoning, also known as DNS spoofing, is a type of attack that exploits vulnerabilities in the domain name system (DNS) to divert Internet traffic away from legitimate servers and towards fake ones. It involves inserting a fake address record into the DNS resolver’s cache causing the resolver to return an incorrect IP address and redirect traffic to the attacker’s computer. This can result in the theft of personal information, spread of malicious software, or simply misdirection of web traffic. The severity of this attack has led to significant enhancements in DNS security measures. Discover more about the aim of DNS cache poisoning attack!

Traceroute Command: Mapping Networks

Traceroute is a network diagnostic command-line tool used to track in real-time the pathway taken by a packet on an IP network from source to destination. The tool also records the time taken for each hop. Traceroute command is useful to identify network bottlenecks packet routing issues, and to get information about network infrastructure, including how many routers are between your computer and the target system. Check out a more detailed explanation of what Traceroute command is.  

Host Command: Utilizing DNS Lookup

The Host Command is a simple utility for performing Domain Name System (DNS) lookups in Linux. It’s used to find the IP address of a specific domain. Additionally, it can be used to find the domain name corresponding to an IP address (reverse lookup), the mail server associated with a domain, as well as nameservers of a domain. It’s a useful tool for network troubleshooting and for getting information about domain parameters. Discover more about Host command!

Ping Command: A Network Diagnostic Tool

Ping is a command-line utility, available on virtually any operating system with network connectivity, used to measure the round-trip time for messages sent from the originating host to a destination computer. The primary use of the ping command is to troubleshoot and diagnose network connectivity issues. It’s excellent for determining if a network device—like a server, router or workstation—is working and online. Read everything you need to know about the Ping command!