SNMP - Configure SNMP service for Linux : Différence entre versions

De PedroWiki
(Useful links)
(Ubuntu / Debian)
Ligne 31 : Ligne 31 :
 
* snmpd
 
* snmpd
 
* libsnmp-dev
 
* libsnmp-dev
 +
* snmp-mibs-downloader
  
 
Dependencies:
 
Dependencies:
Ligne 41 : Ligne 42 :
 
  apt-get install snmpd
 
  apt-get install snmpd
 
  apt-get install libsnmp-dev
 
  apt-get install libsnmp-dev
 +
apt-get install snmp-mibs-downloader
  
 
Service stop:
 
Service stop:
Ligne 55 : Ligne 57 :
 
  agentaddress  127.0.0.1,[::1],<IP of your server>
 
  agentaddress  127.0.0.1,[::1],<IP of your server>
 
  ...
 
  ...
 +
 
  net-snmp-config --create-snmpv3-user
 
  net-snmp-config --create-snmpv3-user
  
 +
'''Note regarding the use of MIBS downloader''': to use it, comment the line in ''/etc/snmp/snmp.conf'':
 +
# mibs :
  
 
'''Note regarding the user creation''': not sure this behavior is systematic but you may have to add such a line to ''/etc/snmp/snmpd.conf'' for your user to be properly created at service restart. This line may be deleted from ''/etc/snmp/snmpd.conf'' after service restart.
 
'''Note regarding the user creation''': not sure this behavior is systematic but you may have to add such a line to ''/etc/snmp/snmpd.conf'' for your user to be properly created at service restart. This line may be deleted from ''/etc/snmp/snmpd.conf'' after service restart.
  
  createUser username (MD5|SHA|SHA-512|SHA-384|SHA-256|SHA-224) authpassphrase [DES|AES] [privpassphrase]
+
createUser username (MD5|SHA|SHA-512|SHA-384|SHA-256|SHA-224) authpassphrase [DES|AES] [privpassphrase]
  
 
Service start:
 
Service start:

Version du 7 mars 2023 à 15:29

Introduction

SNMP configuration on Linux may be complex.

Many documentation exist on Internet but they describe so many different methods it makes it difficult to identify THE best way to do it.

This article will try to identify a kind of procedure to install and configure the service.

Useful links

Useful tools

Install and configure the service

Note: for the moment let's focus on SNMPv3. SNMPv2 should be documented later on.

Ubuntu / Debian

Useful packages:

  • snmp
  • snmpd
  • libsnmp-dev
  • snmp-mibs-downloader

Dependencies:

  • libsnmp-base
  • libsnmp35:amd64

Packages installation:

apt-get install snmp
apt-get install snmpd
apt-get install libsnmp-dev
apt-get install snmp-mibs-downloader

Service stop:

systemctl stop snmpd.service

Service configuration:

vi /etc/snmp/snmpd.conf
...
sysLocation    <location description>
sysContact     <your sysops contact>
...
agentaddress  127.0.0.1,[::1],<IP of your server>
...

net-snmp-config --create-snmpv3-user

Note regarding the use of MIBS downloader: to use it, comment the line in /etc/snmp/snmp.conf:

# mibs :

Note regarding the user creation: not sure this behavior is systematic but you may have to add such a line to /etc/snmp/snmpd.conf for your user to be properly created at service restart. This line may be deleted from /etc/snmp/snmpd.conf after service restart.

createUser username (MD5|SHA|SHA-512|SHA-384|SHA-256|SHA-224) authpassphrase [DES|AES] [privpassphrase]

Service start:

systemctl start snmpd.service

Note: think about allowing flows on the firewall you use on or around the system.