Table of contents 

1. Network scanners: deploying tools for network analysis
2. What is a network scanner?
3. Network analysis tools: why are they indispensable?
4. How does a CMDB complement network analysis tools?
5. For network scanner software: i-doit discovery powered by JDisc
6. Network analysis tools: i-doit Add-on OCS Inventory
7. Best practices for using network scanners
8. Network monitoring software in practice

Network scanners: deploying tools for network analysis 

Every administrator knows the gradual loss of control in complex IT landscapes. Manual inventory and scripts reach their limits in view of the growing number of devices, cloud services, and applications. The consequence: security vulnerabilities, compliance violations, and an opaque infrastructure.

A network scanner is the first crucial step towards regaining control. However, it only delivers raw data. Only the combination of network scanner software and a CMDB like i-doit turns pure information into tangible, strategic advantages.

This article shows how network analysis tools work and how you can use the software duo for robust IT documentation and management.

What is a network scanner? 

A network scanner is more than just an IP finder. It screens your network and automatically inventories every connected device. Alongside IP and MAC addresses, it also delivers a detailed situational picture: Which operating systems are in use? Which ports are open and represent a potential entry point? Which software is installed where?

Using protocols such as ICMP, TCP, and UDP, the network scanner software creates a precise map of your infrastructure and thus the foundation for any professional IT management.

The core capabilities of a network scanner include:

• Device inventory: seamlessly records clients, servers, printers, and other assets with device names, IP addresses, MAC addresses, and operating system.
• Port analysis: identifies open ports and uncovers vulnerable security gaps.
• Structure detection: visualises dependencies and shows how devices communicate with each other on the network.
• Software tracking: lists installed applications and their versions.

A network scanner program replaces assumptions with verifiable data and thus creates the basis for reliable decisions regarding security and control.

Network analysis tools: why are they indispensable? 

Cyberattacks are becoming more complex, compliance requirements stricter, and the network infrastructure is growing faster than manual processes can keep up with. It is evident that network analysis tools are no longer a nice-to-have solution, but a prerequisite for a resilient IT architecture.

1. Transparency and control

Network analysis tools record all active endpoints, connections, and services in real-time. They uncover shadow IT and identify unauthorised devices on the network that could serve as an entry point for attacks.

2. Proactive security management

Continuous monitoring of open ports, unpatched systems, and outdated protocols shifts the focus from reaction to prevention. Instead of rectifying problems, network scanner tools prevent them from arising in the first place.

3. Compliance

Network analysis tools generate the documentation that auditors expect, whether ISO 27001, NIS2, or GDPR. Structured inventory, change histories, and compliance reports are generated automatically and without manual rework.

4. Increasing efficiency

Automated discovery and inventory processes with network monitoring software replace error-prone Excel lists and manual walk-throughs. The IT team can concentrate on architectural decisions, optimisation, and projects instead of maintaining inventory data.

How does a CMDB complement network analysis tools? 

A Configuration Management Database (CMDB) translates raw data from network analysis tools into actionable infrastructure intelligence. It solves the problem of fragmented data sources and links network scanner tools with complete IT documentation.

Automated detection and inventory

A CMDB aggregates network scans and correlates them with software inventories, licence stocks, cloud resources, and virtualised environments. The result is a complete map of the IT landscape.

Central data management

In a CMDB, technical attributes are enriched with contractual relationships, cost centres, responsibilities, geographical locations, service dependencies, and further context information. A hardware component becomes an IT asset with clear process dependencies.

Regular updates

Networks are dynamic. Automated, scheduled scans keep the CMDB synchronised with reality and update outdated or incomplete data. The IT documentation remains reliable, without any manual maintenance effort.

For network scanner software: i-doit discovery powered by JDisc 

i-doit discovery powered by JDisc is a combination of an agentless network scanner (JDisc) and a process-oriented CMDB (i-doit). The solution renders manual inventory obsolete and relieves IT managers. Servers, clients, network components, peripherals, and virtual machines are automatically detected without the need for software agents on the target systems. All asset data flows into the CMDB and is available there for change, incident, and asset management processes.

The advantages of i-doit discovery powered by JDisc:

• Agentless discovery: No rollout effort, no performance losses on your systems. The discovery runs unnoticed in the background.
• In-depth information: The solution records hardware, software installations, configurations, and dependencies.
• Seamless CMDB integration: The data ends up directly in the i-doit CMDB and is available there for further applications.
• Intuitive operation: Scans are controlled directly from the i-doit interface, which simplifies the process to the maximum.

Network analysis tools: i-doit Add-on OCS Inventory 

The i-doit Add-on OCS Inventory automates the inventory of hardware and software stocks based on the established open-source platform OCS Inventory NG (Open Computer and Software Inventory Next Generation). The solution is aimed at organisations that rely on open-source tools for network monitoring software and simultaneously require a structured integration into professional CMDB processes.

Functional scope of the i-doit Add-on OCS Inventory:

• Automated asset discovery: detection of hardware components, installed software packages, and configuration parameters on the network.
• Direct CMDB import: collected data from OCS Inventory NG flows structurally into the i-doit CMDB and is mapped there as IT assets.
• Customisable import logic: mapping rules, field transformations, and filters can be adapted to company-specific requirements.
• Continuous interface maintenance: updates and compatibility adjustments for new OCS versions are carried out by the manufacturer.

Best practices for using network scanners 

The regular use of network scanners only delivers added value if the results are systematically processed and integrated into an IT documentation system. Three factors determine success:

1. Integration into the CMDB as a duty, not an option

Scan results that remain isolated in tool dashboards quickly lose relevance. Only transferring them into a CMDB makes them usable. The connection between network monitoring software and the CMDB should be automated and bidirectional so that changes remain traceable in real-time.

2. Data protection and compliance conformity from the start

Network scanner programs inevitably also process personal data. Define in advance which data you collect, how long you store it, and who is allowed to access it. Document the legal basis and, in case of doubt, coordinate with the data protection officer.

3. Capacity building in the team – technology alone is not enough

Network analysis tools generate data volumes that must be interpreted. Open ports, unknown services, or anomalies in traffic are only actionable if the team understands what they mean. Train your employees accordingly. Understanding and evaluating the scan results is almost more important than operating the network analysis tool.

Network monitoring software in practice

Network scanners create visibility, but only the structured processing of their data in a CMDB makes this visibility relevant for control. Whether you rely on the integrated solution i-doit discovery powered by JDisc or use the i-doit Add-on for OCS Inventory: continuous data management is decisive. This allows you to proactively address security risks, confidently meet compliance requirements, and manage your IT infrastructure efficiently and in a future-proof manner.

Would you like to connect your network monitoring software with i-doit? Then feel free to use our 30-day trial phase.