computer science

Network Security Toolkit

Network Security Toolkit is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Network Security Toolkit rather than just read about it. In short: Network Security Toolkit (NST) is a Linux-based Live DVD/USB Flash Drive that provides a set of free and open-source computer security and networking tools to perform routine security and networking diagnostic and monitoring tasks. The distribution can be used as a network security analysis, validation and monitoring tool on servers hosting virtual machines.

Key takeaways

Network Security Toolkit belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Network Security Toolkit to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Network Security Toolkit from memory before moving on to harder problems.

Reference excerpt

Network Security Toolkit (NST) is a Linux-based Live DVD/USB Flash Drive that provides a set of free and open-source computer security and networking tools to perform routine security and networking diagnostic and monitoring tasks. The distribution can be used as a network security analysis, validation and monitoring tool on servers hosting virtual machines. The majority of tools published in the article "Top 125 security tools" by Insecure.org are available in the toolkit. NST has package management capabilities similar to Fedora and maintains its own repository of additional packages.

Features Many tasks that can be performed within NST are available through a web interface called NST WUI. Among the tools that can be used through this interface are nmap with the vizualization tool ZenMap, ntop, a Network Interface Bandwidth Monitor, a Network Segment ARP Scanner, a session manager for VNC, a minicom-based terminal server, serial port monitoring, and WPA PSK management. Other features include visualization of ntopng, ntop, wireshark, traceroute, NetFlow and kismet data by geolocating the host addresses, IPv4 Address conversation, traceroute data and wireless access points and displaying them via Google Earth or a Mercator World Map bit image, a browser-based packet capture and protocol analysis system capable of monitoring up to four network interfaces using Wireshark, as well as a Snort-based intrusion detection system with a "collector" backend that stores incidents in a MySQL database. For web developers, there is also a JavaScript console with a built-in object library with functions that aid the development of dynamic web pages.

Host Geolocations The following example ntop host geolocation images were generated by NST.

Network Monitors

The following image depicts the interactive dynamic SVG/AJAX enabled Network Interface Bandwidth Monitor which is integrated into the NST WUI. Also shown is a Ruler Measurement tool overlay to perform time and bandwidth rate analysis.

Illustrations

Worked examples

Example 1 — a first encounter with Network Security Toolkit

Start with the simplest possible case. Write down what Network Security Toolkit claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Network Security Toolkit before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Network Security Toolkit ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Network Security Toolkit

In research: Network Security Toolkit appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Network Security Toolkit in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Network Security Toolkit is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer security software, Free network management software, Linux security software, so understanding it makes those chapters shorter.
In everyday life: Look for Network Security Toolkit outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Network Security Toolkit in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Network Security Toolkit means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Network Security Toolkit out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Network Security Toolkit in simple terms?

Why does Network Security Toolkit matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Network Security Toolkit?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Network Security Toolkit.