Splunk Enterprise Security

Detecting Port Scan (nmap)

siddh01r
New Member

I did a test port scan using nmap. This way I could catch what I was looking for in ES. Below is my query and it shows me exactly what i am looking for - shows me src_ip dest_ip count all the ports thats been hit and the user.

index=ind_fw sourcetype="pan:traffic" type=TRAFFIC 172.xx.xx.xx 150.xx.xx.xx
| stats count values(dest_port), values(user) by src_ip dest_ip

However, I am stuck on the next phase.
My next goal is to detect a similar result, where the user runs a scan it gets detected on my end.
But i am unsure how i do this without defining the dest_ip and src_ip (like i have in the above query)?
any help would be greatly appreciated.

Thank you

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Event Series: Telemetry Pipeline Management

Balancing Scale and Spend: Gaining Control Over High-Volume Metrics in Splunk Observability Cloud As ...

Kick the Tires Before You Commit: A Hands-On Tour of the Splunk Observability Cloud ...

Evaluating an enterprise observability platform usually goes like this: fill out a form, get a free trial with ...

Deep insights, no barriers: Splunk Observability Cloud Free Edition

As software delivery cycles continue to accelerate, observability shouldn’t be a luxury — it should be a ...