Lecture 4 pt. 4 Flashcards
What does SNMP stand for?
Simple Network Management Protocol
SNMP is used for exchanging management information between network devices.
What is the role of the SNMP manager?
Centralized platform that receives information from agents
It provides an interface for monitoring systems and sends notifications for corrective actions.
What do SNMP agents do?
Collect data from equipment and send it to the manager
They can also send notifications about alarms.
True or False: SNMP is only useful for managing devices of the same hardware and software type.
False
SNMP allows for information collection in a standard way across different hardware and software types.
What is NetFlow?
A network protocol for collecting IP traffic information
Developed by Cisco to monitor network flow and determine traffic sources, destinations, and congestion causes.
What type of devices typically use NetFlow?
Routers, switches, and firewalls
They collect IP traffic statistics on interfaces where NetFlow is enabled.
What is the default UDP port for NetFlow records?
2055
Other ports like 9555, 9995, etc., can also be used.
What happens if a NetFlow packet is dropped?
All contained records are lost forever
The UDP protocol does not inform the router of the loss.
What is the traditional default UDP port for syslog messages?
514
The default TCP port for syslog messages is 1470.
What command configures the ASA to send syslog messages?
logging host interface_name syslog_ip [tcp[/port] | udp[/port]]
This command specifies the interface and IP address of the syslog server.
What does the ‘logging trap’ command do?
Specifies which syslog messages should be sent to the syslog server
Severity levels can be set to filter messages.
What is the command to set a new SNMP group for SNMP Version 3?
snmp-server group group-name v3 [auth | noauth | priv]
The ‘auth’ keyword enables packet authentication, while ‘priv’ enables encryption.
Fill in the blank: The default listening port for SNMP requests is _______.
161
This is the port on which incoming SNMP requests are accepted.
What does the ‘snmp-server user’ command accomplish?
Creates a new user for an SNMP group under SNMP Version 3
It specifies authentication and encryption settings.
What is the purpose of the ‘snmp-server host’ command?
Specifies the recipient of an SNMP notification
It includes the interface, hostname or IP address, and type of connection.
True or False: SNMP traps are disabled by default.
False
SNMP traps are enabled by default.
What command is used to set the listening port for SNMP requests?
snmp-server listen-port lport
Replace ‘lport’ with the desired port number.
What is the default listening port for SNMP?
161
In which context is the snmp-server listen-port command available?
admin context
This command is not available in the system context.
What happens if you configure the snmp-server listen-port command on a port that is currently in use?
A message appears indicating the conflict.
Fill in the blank: The lport argument is the port on which _______ requests are accepted.
incoming
