Hi Guys..

I was thinking of designing an infrastructure template, that would allow me to replicate that model across my organisation which would enable the fellow team members to proactively monitor the 'red flags' that might arise within our LAN from time to time. By red flags I mean, something that would mean there is an imminent 'threat' to the overall security posture within my enterprise and I am not talking from perimeter Firewall / IPS perspective but I want to look more inwards.

Things that come to mind are:

1. Someone who tries to log into an AD account from a workstation that he/she doesn't usually log into, should be displayed on a dashboard.

2. Account lockouts happening from a given workstation abnormally (abnormal values can be defined)..

3. Abnormal ports being accessed from workstation (like attempts to make connection to someone else's C$, d$ share or someone else making connection to his/her C $ / D $ shares). This might even signify a malware on this PC that has gone undetected by the local antivirus.

...or any other stuff that might bring about a threat to the overall security of my environment.

Has anyone been there n done that?

I understand that it's part technology and part design but I am currently concerned about the design aspect and whether I have my requirements correctly sorted out.

Any / all suggestions welcome!! The idea is to start small and build up gradually over the right foundation. I know that there are costly SIEM solutionw with tall promises.

Thanks in advance!!