![Tcpdump icmp echo](https://kumkoniak.com/102.jpg)
We are using tcpdump to capture and read the data carried in the arp packets. It is associated with a given internet layer address, typically an IPv4 address. ( 67 ) ARPĪddress Resolution Protocol is used for discovering the link-layer address, such as a MAC address. To inspect your device’s DNS level communication over the internet, you can use tcpdump in the following way.
![tcpdump icmp echo tcpdump icmp echo](http://conceptsfortheroad.com/wp-content/uploads/2015/12/Linux-WireShark-Echo-Request.png)
![tcpdump icmp echo tcpdump icmp echo](https://www.cisco.com/c/dam/en/us/td/i/100001-200000/120001-130000/121001-122000/121419.ps/_jcr_content/renditions/121419.jpg)
![tcpdump icmp echo tcpdump icmp echo](https://image1.slideserve.com/2052139/icmp-in-wireshark-l.jpg)
$ sudo tcpdump -i wlan0 port 67 or port 68 -e -n -vvv
![Tcpdump icmp echo](https://kumkoniak.com/102.jpg)