Understanding pcap file format – part I – Global Header

The file must begin with a Section Header Block.  Below is typical configuration, with a single Section Header … Read more

WiFi monitor mode and commands to enforce monitor mode in Linux / Ubuntu

Monitor mode, or RFMON (Radio Frequency MONitor) mode, allows a computer with a wireless network interface controller … Read more

Sending ARP request and receiving ARP Reply using C code

This post is in continuation of our previous post “Understanding ARP (Address Resolution Protocol) basics“ To visualise … Read more

Capture and analyze network packets using tcpdump and tshark

We can use tcpdump to capture the packets whereas tshark to analyse the packets. Using above help, … Read more

sniffex – C program to Capture wifi packets using libpcap

libpcap provides functions for user-level packet capture, used in low-level network monitoring. Following program captures the packets … Read more

Shell script for switching wifi channel using hopping

Using the below script we tries to connect to different wifi channels of hotspot using iwconfig command. … Read more