Note: This article is MAC address, IP address, and the ARP protocol notes
MAC addresses, IP addresses and ARP protocol
MAC address
You can view the OUI Address: http://standards-oui.ieee.org/oui.txt
You can go to query the device vendor information by MAC address: https://mac.51240.com/
View Notes Address: windows, for example: ipconfig / all Ethernet adapter can be drawn, wireless LAN adapter, Bluetooth networks.
IP addresses
Mainly on the role of IP address, will later chapters will focus on explaining
IP address and MAC address of the active object and
Packet forwarding process changes the IP address and MAC address
ARP protocol
ARP request packet is sent encapsulated in a MAC frame, the destination address is a broadcast address
APR protocol can only be used over a period of a link or network; can not be used across the network
1. In addition to the ARP request and response, as well as other types of ARP messages (e.g., for checking the IP address conflict "Invincible ARP, gratuitous ARP ")
2. ARP no security authentication mechanism, there is ARP data (attack) problem
