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Monitor Linux servers

The Monitorpack team regularly provides useful metrics to easily monitor your applications, devices and systems. These are basic measurements, if you want to go further Monitorpack software Guard is able to check all performance counters, services, processes, ports, event IDs, existing printers and shares in your IT environment.

Linux prerequisites

In order for Monitorpack Guard to be able to remotely control Linux without deploying agents, two prerequisites are necessary, the first is that the Linux server must respond to the ping and therefore accept it. Here is the command to apply on Debian in order to authorize the ping:

sudo ufw status
sudo ufw allow icmp

Check sysctl settings

sudo nano /etc/sysctl.conf
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 0
sudo sysctl -p

The second prerequisite is obviously that SNMP is enabled and accepts remote requests, including that the specific community must also be configured. To configure snmp on Linux, you must first install the snmpd package with the command:

Command to Activate SNMP on Debian 11

Load and instal the SNMP package
apt-get install snmpd
Edit the configuration file
nano /etc/snmp/snmpd.conf
Change the following line (or comment it out)
agentAddress udp:127.0.0.1:161
And replace it with:
agentAddress udp:0.0.0.0:161
Then you must configure the SNMP community rocommunity read_community default
or rocommunity "community name" "ip range (unique ip) /subnet mask, ex:"
rocommunity read_community 192.168.1.0/24
Do not leave rocommunity with the default view systemonly (comment the following line):
# rocommunity public default -V systemonly

Update with your specific commity name like rocommunity 'MyCommunityname'

Restart the SNMP service by typing
/etc/init.d/snmpd restart
Verify configuration
systemctl status snmpd
restart the SNMP service
systemctl restart snmpd


Some basic information

Monitor SNMP OIDs


ID Custom SNMP OIDs OID Type Walk
1 1 minute Load 1.3.6.1.4.1.2021.10.1.3.1 ASN_OCTET_STR No
2 5 minute Load 1.3.6.1.4.1.2021.10.1.3.2 ASN_OCTET_STR No
3 15 minute Load 1.3.6.1.4.1.2021.10.1.3.3 ASN_OCTET_STR No
4 ucd-snmpd.laLoadInt1 1.3.6.1.4.1.2021.10.1.5.1 ASN_INTEGER No
5 ucd-snmpd.laLoadInt5 1.3.6.1.4.1.2021.10.1.5.2 ASN_INTEGER No
6 ucd-snmpd.laLoadInt15 1.3.6.1.4.1.2021.10.1.5.3 ASN_INTEGER No
Custom SNMP OIDs CPU times No
7 percentage of user CPU time 1.3.6.1.4.1.2021.11.9.0 ASN_INTEGER No
8 raw user cpu time 1.3.6.1.4.1.2021.11.50.0 ASN_COUNTER No
9 percentages of system CPU time 1.3.6.1.4.1.2021.11.10.0 ASN_INTEGER [%] No
10 raw system cpu time 1.3.6.1.4.1.2021.11.52.0 ASN_COUNTER No
11 percentages of idle CPU time 1.3.6.1.4.1.2021.11.11.0 ASN_INTEGER [%] No
12 raw idle cpu time 1.3.6.1.4.1.2021.11.53.0 ASN_COUNTER No
13 raw nice cpu time: 1.3.6.1.4.1.2021.11.51.0 ASN_COUNTER No
Custom SNMP OIDs Memory statistics
14 Total Swap Size 1.3.6.1.4.1.2021.4.3.0 ASN_INTEGER No
15 Available Swap Space 1.3.6.1.4.1.2021.4.4.0 ASN_INTEGER No
16 Total RAM in machine 1.3.6.1.4.1.2021.4.5.0 ASN_INTEGER No
17 Total RAM used: . 1.3.6.1.4.1.2021.4.6.0 ASN_INTEGER No
18 Total RAM Free 1.3.6.1.4.1.2021.4.11.0 ASN_INTEGER No
18 Total RAM Shared 1.3.6.1.4.1.2021.4.13.0 ASN_INTEGER No
20 Total RAM Buffered 1.3.6.1.4.1.2021.4.14.0 ASN_INTEGER No
21 Total Cached Memory 1.3.6.1.4.1.2021.4.15.0 ASN_INTEGER No
Custom SNMP OIDs Disks
22 Path where the disk is mounted 1.3.6.1.4.1.2021.9.1.2.1 ASN_OCTET_STR No
23 Path of the device for the partition 1.3.6.1.4.1.2021.9.1.3.1 ASN_OCTET_STR No
24 Total size of the disk/partion (kBytes): 1.3.6.1.4.1.2021.9.1.6.1 ASN_INTEGER No
25 Available space on the disk: 1.3.6.1.4.1.2021.9.1.7.1 ASN_INTEGER No
26 Used space on the disk: 1.3.6.1.4.1.2021.9.1.8.1 ASN_INTEGER No
27 Percentage of space used on disk: 1.3.6.1.4.1.2021.9.1.9.1 ASN_INTEGER No
28 Percentage of inodes used on disk: 1.3.6.1.4.1.2021.9.1.10.1 ASN_INTEGER No
Custom SNMP OIDs Other
29 System Uptime: 1.3.6.1.2.1.1.3.0 ASN_TIMETICKS No

Monitor daemons by sockets


Subject Daemon Status Port Link
All TCP port 1 to 65535 True
false		 RFC None
TCP SunRPC True/False 11 None
TCP DayTime True/False 13 None
TCP FTP True/False 21 None
TCP SSH True/False 22 None
TCP Telnet True/False 23 None
TCP SMTP True/False 25 None
TCP Time True/False 37 None
TCP DNS Service True/False 53 None
TCP Finger True/False 79 None
TCP Web Server True/False 80 None
TCP POP True/False 109 None
TCP POP3 True/False 110 None
TCP RPC Bind True/False 111 None
TCP Auth True/False 113 None
TCP Login True/False 513 None
TCP Shell True/False 514 None
TCP Printers True/False 515 None