When it comes to troubleshooting and resolving common network issues in Linux, there are several tools and techniques available. Here are some of the common ones:
Ping: Ping is a command-line utility that sends an ICMP echo request to a target host or IP address to test if it is reachable. It is useful for testing basic network connectivity.
Example usage: ping google.com
Traceroute: Traceroute is a tool that shows the path packets take from your computer to a target host or IP address. It is useful for identifying where network issues are occurring.
Example usage: traceroute google.com
Netstat: Netstat is a command-line tool that shows the status of network connections on a Linux system. It can be used to view active network connections, as well as listening ports and other network statistics.
Example usage: netstat -tunap
Nmap: Nmap is a powerful network exploration and security auditing tool that can be used to identify hosts and services on a network, as well as their open ports.
Example usage: nmap -sS google.com
Tcpdump: Tcpdump is a command-line packet sniffer that can be used to capture and analyze network traffic. It can be used to identify issues with network traffic and troubleshoot network problems.
Example usage: tcpdump -i eth0
In addition to these tools, there are many other techniques that can be used to troubleshoot and resolve network issues in Linux, such as checking network configuration files, reviewing system logs, and analyzing firewall rules.