Network and Server Monitoring

I recently purchased a new siem, I just realized that it don't do any sort of network monitoring, for instance I have a product that will ping a server or router, etc every 5 minutes and email me if it goes down and it will also monitor cpu, storage and memory on servers. Does anyone know of any freeware products that will accomplish this?


There are plenty of SNMP based options available. I recommend starting with something basic. Below are some options;

CA Propriety
Smarts Propriety
EM7 Propriety
SolarWinds Orion Propriety
WhatsupGold Propriety
Observer Propriety
Cola Soft Capsa Propriety
Adventnet OP Manager Propriety
Nexus NMS Propriety
Overseer Propriety
StableNet Suite Propriety
NetXplorer Propriety
IT Monitor Enterprise Propriety
Automated Infrastructure Technology Propriety
loriotpro SNMP Manager Propriety
zenithinfotec Propriety
SNMPc Propriety
InterMapper Propriety
NetMRI Propriety
Netvoyant Propriety
ServerAlive Propriety
AdRem NetCrunch 5.1 Propriety
NetXMS Propriety
CommView Propriety
AirMagnet Propriety
MonitorMagic Propriety

Ntop LAMP based NMS
Munin LAMP based NMS
Bandwidthd LAMP based NMS
Nagios LAMP based NMS
OpenNMS LAMP based NMS
Zabbix LAMP based NMS
Hyperic HQ LAMP based NMS
Etherape LAMP based NMS
GroundWork LAMP based NMS
Netdisco LAMP based NMS
Cacti RRDTool

Start with something basic as NTOP or cacti

There's quite a few of these monitoring tools out there, it's just what you feel comfortable using, can it be Open Source and using Linux or does it need to be something running on Windows only?

What do you want to monitor, the things you mention are already monitored you say, or are these you want to monitor?

Thanks for clarifying.

I'll give some freeware/Open-Source monitoring tools to start with:

PRTG has some good functionality. It is free for up to a certain number of monitors. The paid version up to 100 monitors is only like $500 I think.

I'm looking for something that can tell me if something that is pingable is down. Also something that will alert if say a processor is spiked for more than a few minutes or memory is pegged etc.

PRTG does this. So does Spiceworks I believe.

I have never tried PRTG, I'll have to take a look, Spiceworks is pretty terrible

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