Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Analytics //

Security Monitoring

1/9/2020
09:52 AM
100%
0%

7 Free Tools for Better Visibility Into Your Network

It's hard to protect what you don't know is there. These free tools can help you understand just what it is that you need to protect -- and need to protect yourself from.
Previous
1 of 8
Next

What's on your network? It's a simple question, but one that countless security and network management teams struggle to answer because most enterprise networks are dynamic, living things that change at a rapid pace. That change is the key to adapting to a changing business environment — and key to criminals' ability to breach the perimeter and gain access to enterprise assets.

Security teams tend to have a very good idea of what the network looked like on the day it went live. Nevertheless, conversations with consultants (and over drinks at conferences) overflow with complaints and confessions about how those same teams are ignorant of what the network looks like right now. That's a problem. And it becomes a bigger problem when it runs into the reality of the way that criminal hackers work.

Criminal hackers specialize in understanding how a targeted network is configured today. The extent to which they understand every component and interface is the extent to which they can find exploitable vulnerabilities. And those weaknesses are even more vulnerable if the network owner doesn't know they exist.

So one of the first steps in protecting a network is understanding precisely what is there to be protected. There are a number of different commercial products that can help provide an inventory and map of a network. But for many smaller organizations, even lower cost tools can be difficult additions to the security budget. That's why the focus of this article is on free products that provide network visibility and monitoring.

Some of the products on this list are open source and some are not. Several of them may require an investment of time and effort to make up for the lack of a purchase price. Regardless, each of these could be a way for a security team to either get its first solid picture of its current network or augment the view provided by other tools. In either case, visibility is always a good thing.

We're curious; are there free or open source network discovery and monitoring tools that you use? Are there any that you've tried and abandoned? We'd like to hear about your experience — let us know in the comment section, below!

(Image: GoodIdeas VIA Adobe Stock)

 

Curtis Franklin Jr. is Senior Analyst at Omdia, focusing on enterprise security management. Curtis has been writing about technologies and products in computing and networking since the early 1980s. He has been on staff and contributed to technology-industry publications ... View Full Bio
 

Recommended Reading:

Previous
1 of 8
Next
Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
RuskinF
50%
50%
RuskinF,
User Rank: Apprentice
1/22/2020 | 11:25:43 AM
Re: Why not Jarvee?!
There have been so many options apart from Centreon like Jarvee Hosting, a closed source platform for improving the network visibility of your brand.

Correct me if I am getting wrong or posted in the wrong article.
tdsan
50%
50%
tdsan,
User Rank: Ninja
1/9/2020 | 3:09:16 PM
Re: Why not Centreon?!

Interesting, I would add "OpenNMS" to the list as well.




 

Todd

 

talmadge607
0%
100%
talmadge607,
User Rank: Apprentice
1/9/2020 | 10:35:50 AM
Why not Centreon?!
Hi, great post! You talked about Zabbix, Nagios Core ... Why not Centreon ?! Open source and a great community!
Commentary
Ransomware Is Not the Problem
Adam Shostack, Consultant, Entrepreneur, Technologist, Game Designer,  6/9/2021
Edge-DRsplash-11-edge-ask-the-experts
How Can I Test the Security of My Home-Office Employees' Routers?
John Bock, Senior Research Scientist,  6/7/2021
News
New Ransomware Group Claiming Connection to REvil Gang Surfaces
Jai Vijayan, Contributing Writer,  6/10/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: Google's new See No Evil policy......
Current Issue
The State of Cybersecurity Incident Response
In this report learn how enterprises are building their incident response teams and processes, how they research potential compromises, how they respond to new breaches, and what tools and processes they use to remediate problems and improve their cyber defenses for the future.
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-33818
PUBLISHED: 2021-06-18
An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.
CVE-2021-33820
PUBLISHED: 2021-06-18
An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.
CVE-2021-33822
PUBLISHED: 2021-06-18
An issue was discovered on 4GEE ROUTER HH70VB Version HH70_E1_02.00_22. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.
CVE-2020-18442
PUBLISHED: 2021-06-18
Infinite Loop in zziplib v0.13.69 allows remote attackers to cause a denial of service via the return value "zzip_file_read" in the function "unzzip_cat_file".
CVE-2021-3604
PUBLISHED: 2021-06-18
Secure 8 (Evalos) does not validate user input data correctly, allowing a remote attacker to perform a Blind SQL Injection. An attacker could exploit this vulnerability in order to extract information of users and administrator accounts stored in the database.