Scanning refers to a set of procedures for identifying hosts, ports, and services in a network. Scanning is one of the components of intelligence gathering for an attacker to create a profile of the target organization.
Scanning types :
MIB is a virtual database containing formal description of all the network objects that can be managed using SNMP. The MIB database is hierarchical and each managed object in a MIB is addressed through object identifiers ( OID )
Network Time Protocol ( NTP ) is designed to synchronize clocks of networked computers. It uses UDP port 123 as its primary means of communication. NTP can maintain time to within 10 milliseconds (1/100 seconds) over the public Internet.
ARP (Address Resolution Protocol) is a form of attack in which an attacker changes MAC ( Media Access Control) address and attacks an internet LAN by changing the target computer’s ARP cache with a forged ARP request and reply packets.