Today we will cover tcpdump tool. Tcpdump is a packet analyzer tool just like wireshark.It run under command line interface. It help you to capture data packets on low level to understand what is going on inside the packet.You can run tcpdump on linux/unix based operating systems. Syntax for tcpdumptcpdump <paramter> e.g tcpdump -i eth0…
Today we will see the different Ethernet frame types and there header size. 1)Ethernet encapsulation 802.3 2)Ethernet encapsulation 802.1q Frame 3)Ethernet encapsulation 802.1ad 4)Ethernet encapsulation 802.1ah
IPv4 Packet The header fields are discussed below: Version (always set to the value 4 in the current version of IP) IP Header Length (number of 32 -bit words forming the header, usually five) Type of Service (ToS), now known as Differentiated Services Code Point (DSCP) (usually set to 0, but may indicate particular Quality…