Network Management - lizzy9596/sys-265 GitHub Wiki
Network Management
- Implies you are managing resources connected to your network and not waiting for problems
Methods
SNMP - Simple Network Management Protocol
- Usually the least common denominator for Network Management
- A community string is a password sent in clear text & defaulted to "public, is used to access Read-Only resources.
Three Components
- Managed Device
- SNMP Service/Agent
- Network Management System
Management Information Base
- Contains a Heirarchal list of object identifiers
- SNMP Compliant systems map OIDS to system parameters
Ports and protocols
Example:
- pfsense supports SNMP
- When enabled, it will listen for requests to ports 161/UDP
- An External system will use an SNMP client to query fw01
Traps
- An Alternative is to set a condition on the SNMP enabled device, where when a certain threshold is reached.