Open SNMP

Simple Network Management Protocol (SNMP) is an Internet-standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior. Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks and more.

Impact of running open SNMP devices

Again, it runs on the UDP protocol and again can be abuse for UDP based amplification attacks. SNMP has an amplification factor of 6.3