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.

Vulnerabilities / Threats

4/23/2019
09:00 AM
50%
50%

7 Ways to Get the Most from Your IDS/IPS

Intrusion detection and prevention is at the foundation of successful security in-depth. Securing the perimeter requires a solid understanding of these two critical components.
Previous
1 of 8
Next

"Security in-depth" is one of the few cybersecurity phrases that has kept its relevance since its introduction. The idea is simple — a threat that evades one defender will be caught by another — but the implementation can be complicated. Two of the related pieces of that implementation are the intrusion detection system (IDS) and the intrusion prevention system (IPS). Getting the most from them will help keep a network as secure as possible.

What makes an IDS/IPS different from a firewall? And what separates an IDS from an IPS? These are common questions that have straightforward answers — in theory. The practice is a bit messier.

A firewall's actions tend to be defined by the wrappers around packets. Firewalls tend to look at source and destination addresses, protocols, and how those "carrier" components fit together and into the rules established by the administrator. The IDS and IPS focus their attention on the contents of the packet, looking for known attacks and misbehaviors, and stopping or repairing the packets based on those signature matches.

As for the difference between an IDS and an IPS, the functional difference is in the name: An IDS is a monitoring device or service, while an IPS actively permits or denies packet passage. A side effect of this difference is that an IDS monitors network traffic via span ports or taps, while an IPS is in-line with the network and, therefore, another potential point of failure for network traffic.

The "bit messier" part of all this comes courtesy of next-generation firewalls (NGFs), unified threat managers (UTMs), and other network protection devices that combine functions and blur lines between different security functions. Regardless of how they are delivered, though, the functions of an IDS/IPS should be part of any network security architecture.

So how do you get the most from your IDS or IPS? The practices listed here are the result of conversations with cybersecurity professionals, conference sessions at industry gatherings, personal experience, and Internet searches. While some practices apply to only one or the other, many apply to both.  

(Image: nali VIA Adobe Stock)

 

Curtis Franklin Jr. is Senior Editor at Dark Reading. In this role he focuses on product and technology coverage for the publication. In addition he works on audio and video programming for Dark Reading and contributes to activities at Interop ITX, Black Hat, INsecurity, and ...
View Full Bio
 

Recommended Reading:

Previous
1 of 8
Next
Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Pawankumar3995
100%
0%
Pawankumar3995,
User Rank: Apprentice
4/29/2019 | 12:02:41 AM
nice and Thanks
I have learn some excellent stuff here. I surprise how so much effort you set to create the sort of magnificent informative web site. Thank you very much for sharing such information with us. Love Shayari
COVID-19: Latest Security News & Commentary
Dark Reading Staff 9/25/2020
9 Tips to Prepare for the Future of Cloud & Network Security
Kelly Sheridan, Staff Editor, Dark Reading,  9/28/2020
Attacker Dwell Time: Ransomware's Most Important Metric
Ricardo Villadiego, Founder and CEO of Lumu,  9/30/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Special Report: Computing's New Normal
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
How IT Security Organizations are Attacking the Cybersecurity Problem
How IT Security Organizations are Attacking the Cybersecurity Problem
The COVID-19 pandemic turned the world -- and enterprise computing -- on end. Here's a look at how cybersecurity teams are retrenching their defense strategies, rebuilding their teams, and selecting new technologies to stop the oncoming rise of online attacks.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-25288
PUBLISHED: 2020-09-30
An issue was discovered in MantisBT before 2.24.3. When editing an Issue in a Project where a Custom Field with a crafted Regular Expression property is used, improper escaping of the corresponding form input's pattern attribute allows HTML injection and, if CSP settings permit, execution of arbitra...
CVE-2020-25781
PUBLISHED: 2020-09-30
An issue was discovered in file_download.php in MantisBT before 2.24.3. Users without access to view private issue notes are able to download the (supposedly private) attachments linked to these notes by accessing the corresponding file download URL directly.
CVE-2020-25830
PUBLISHED: 2020-09-30
An issue was discovered in MantisBT before 2.24.3. Improper escaping of a custom field's name allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript when attempting to update said custom field via bug_actiongroup_page.php.
CVE-2020-26159
PUBLISHED: 2020-09-30
In Oniguruma 6.9.5_rev1, an attacker able to supply a regular expression for compilation may be able to overflow a buffer by one byte in concat_opt_exact_str in src/regcomp.c .
CVE-2020-6654
PUBLISHED: 2020-09-30
A DLL Hijacking vulnerability in Eaton's 9000x Programming and Configuration Software v 2.0.38 and prior allows an attacker to execute arbitrary code by replacing the required DLLs with malicious DLLs when the software try to load vci11un6.DLL and cinpl.DLL.