Application Protocal
UDP PORTS
Kerberos.
uses UDP port 88
Authentication protocol used in Windows domains and some Unix environments.
(SNMP) Simple Network Management Protocol
Trivial File Transfer Protocol (TFTP)
Transfer smaller amounts of data, such as when communicating with network devices.
Many attacks have used TFTP
UDP port 69
Not an essential protocol on most networks
UDP port 161
Send notifications & Error mesgs
known as traps (sometimes called device traps)
manages network devices
SNMPv2 and SNMPv3 are much more secure
(NetBIOS) Network Basic Input/Output System
TCP port 139. It can use TCP port 137, but rarely does.
UDP ports 137 and 138
allows applications on different computers to communicate within a local area network (LAN).
(RDP) Administrators and clients use Remote Desktop Protocol
UDP 3389 or TCP 3389
To connect to other systems from remote locations