Topic 7 - Infrastructure Management

Question 1

Explain SNMP

Answer 1

SNMP is a layer 7 application layer protocol consisting of an SNMP manager, an SNMP agent and MIBs.

Allows you to actively monitor the network and devices and notify you before it’s a problem

Question 2

SNMP Versions and its features

Answer 2

SNMP v1
SNMP 2c - NMPv2 improves upon SNMPv1 (SNMPv1 was criticized for poor security).
- Includes these improvements of Performance, Security, Confidentiality.
- SNMPv2 still uses the less secure community-string ( in Plain clear Text )

SNMP V3:
• SNMPv3 does not use community-strings

• SNMPv3 provides message integrity, authentication, encryption
• Security model (Auth) is an authentication strategy for groups and users within those groups.

• Security level (Priv) is the permitted level of security within a security model
Security mechanism is the combination of security model and security level in use

Question 3

Explain Syslog

Answer 3

Syslog is a way for network devices to send event messages to a logging server, usually known as a Syslog server.

• Able to timestamp messages for real-time debugging (check system clock)

• Syslog messages can be accessed via CLI and/or saved to a syslog server

Question 4

SNMP manager Protocol and port number

Answer 4

UDP

port 161

Question 5

SNMP Agent Protocol and port number

Answer 5

UDP

port 162)

Question 6

Syslog Port number

Answer 6

Port 514