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Portactivity

Portactivity

SNMP Extend

  1. Install missing packages - Ubuntu is shown below.

    apt install libparse-netstat-perl
apt install libjson-perl

  2. Copy the Perl script to the desired host (the host must be added to LibreNMS devices)

    wget https://github.com/librenms/librenms-agent/raw/master/snmp/portactivity -O /etc/snmp/portactivity

  3. Make the script executable

    chmod +x /etc/snmp/portactivity

  4. Edit your snmpd.conf file (usually /etc/snmp/snmpd.conf) and add:

    extend portactivity /etc/snmp/portactivity -p http,ldap,imap

portactivity

Will monitor HTTP, LDAP, and IMAP. The -p switch specifies what ports to use. This is a comma seperated list.

These must be found in '/etc/services' or where ever NSS is set to fetch it from. If not, it will throw an error.

If you want to JSON returned by it to be printed in a pretty format use the -P flag.

  1. Restart snmpd on your host.

    sudo systemctl restart snmpd

Please note that for only TCP[46] services are supported.