Format pcap file
Dalam Global Header, ada timzone info.
Dalam Packet Header ada timestamp.
Dalam Packet Data ada network traffic yg lalu (dihantar/diterima) NIC tersebut.
Packet vs Frame
Frame is refer to data link layer
Packet refer to network layer
Ref:
- https://www.elvidence.com.au/understanding-time-stamps-in-packet-capture-data-pcap-files/
