ntopng was initially designed as a passive traffic monitoring tool. Over the years we have added active monitoring features such as network discovery, SNMP, and now vulnerability scan. A network vulnerability scanner is a tool designed to identify vulnerabilities (often know as CVEs) in network services such as a web or SSH server by performing […]
Welcome to ntopng 6.0: new Dashboard, Vulnerability Scan, Cloud [beta], Periodic Reports, Threshold-based Alerts
This is to announce ntopng 6.0 a new major release that includes many new features and improvements: ntopng is no longer just a real-time traffic monitoring application: it can now track assets when offline and enable better investigations leveraging on improved historical traffic analysis. Implemented vulnerability reports that can scan hosts, ports, and look for […]
Threshold vs Statistical Metric Alerts in ntopng
Threshold alerts and statistical alerts are two different methods for monitoring and detecting unusual or potentially problematic events in various systems, such as network monitoring where anomaly detection is essential. They differ in how they define and identify anomalies: Threshold Alerts Threshold alerts are based on fixed, predefined values or thresholds. You set specific thresholds […]
How to Send ntopng Alerts to PagerDuty
PagerDuty is a popular incident-response platform that allows problem notifications to be delivered in a flexible way to the correct team member. We have integrated it in ntopng Enterprise and this post shows you howto configure it. First of all you need to create a PagerDuty account and select a plan (there is a free […]
How we Improved Alarm Delivery in ntopng
Sometimes, a critical issue shows up in your network and you’d like to be notified by ntopng on Telegram or by E-Mail. ntopng allows you to filter alerts for each recipient based on a few criteria including alert family, category, severity, or affected hosts. However in some case you want to be notified about a […]
Sorting Out and Clustering Alerts in ntopng
In a previous post, What’s In The (Alert) Inbox?, we’ve discussed how alerts are organised in the Alerts Explorer. The new “inbox” design allows us to cluster alerts into separate folders high-priority events, that require attention and needs to be addresses as soon as possible, from other minor events. This solves one issue: having all […]
What’s In The (Alert) Inbox?
ntopng emits alerts in order to report relevant. They can be triggered by traffic thresholds, user scripts, behavioural checks, or due to Security issues, including those detected by IDS systems integrated with ntopng (the full list of built-in checks, and related alerts, that can be enabled in ntopng is available in the Alerts section of […]
Understanding Timeseries Throughput Calculation
ntopng creates timeseries for traffic by periodically (e.g. every minute) writing into RRD/Influx the traffic volume observed. Below you can see an example. Traffic is used to keep track of the data volume exchanged. Over time timeseries are aggregated (roll-up) to save space, meaning for instance that 60 minute observations are used to compute a […]
HowTo Trigger an Alert When Contacting a Website/IP with ntopng
ntopng has native blacklist support that enables generation of alerts when malware sites are contacted. You can enable/disable the list of active blacklist by accessing the blacklist page from the preferences menu of the left sidebar and also configure the list properties such as refresh rate as well enable/disable them. Now suppose you want to […]
Deploying nEdge with Multiple (Virtual) LANs (and WANs)
Exactly 3 years elapsed from the introduction of nEdge (ntopng Edge), and despite the fact we haven’t posted much about it in our blog, this tool continued to grow, many features have been added over time, and we see that every time new users have the chance to try it, they are amazed about the capabilities it provides. […]