SNMP

Description

• Simple Network Management Protocol used to control network devices such as routers, switches, servers, etc.
• Management Information Base is the format for storing device information
• Object Identifier (OID) is a node in the namespace
• Three versions
  • SNMPv1 has no built-in authentication and does not support encryption
  • SNMPv2’s community string is unencrypted
  • SNMPv3 has authentication and encryption
• Community strings are how clients authenticate with SNMP agent

Port

• control commands over UDP port 161
• traps over UDP (not requested by the client) port 162

Footprinting

snmpwalk -v2c -c public IP_Address
onesixtyone -c wordlist IP_Address
braa public@IP_Address:OID.*