Tag: packet filtering
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Iptables
Iptables is a powerful command-line utility used to configure and manage the Linux kernel’s built-in netfilter firewall. It provides granular control over incoming, outgoing, and forwarded network traffic, making it a vital tool for system administrators to secure Linux-based systems. Iptables works by defining rules within chains, which are part of tables that specify how…
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Tcpdump
Tcpdump is a network packet analyzer that provides a detailed look at the network traffic flowing through a system. It is widely used by network administrators and cybersecurity professionals to capture and inspect packets to diagnose network issues, troubleshoot performance problems, and detect security breaches. Tcpdump operates from the command line and is capable of…