packet-sniffer

A simple packet sniffer written in C that captures TCP and DNS packets and saves them to a capture.pcap file.

Build

To compile the project, run:

make

Usage

This program requires root privileges to open a raw socket.

sudo ./sniffer

To stop capturing, press Ctrl+C. The program will gracefully close the socket and the output file.

Features

• Captures all packets on the network interface.
• Filters and displays details for TCP packets and DNS requests (port 53).
• Saves captured data to capture.pcap which can be opened in Wireshark.