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

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
Windows 10 Migration: Getting It Right
Kevin Alexandra, Principal Solutions Engineer at BeyondTrust,  5/15/2019
Baltimore Ransomware Attack Takes Strange Twist
Kelly Jackson Higgins, Executive Editor at Dark Reading,  5/14/2019
When Older Windows Systems Won't Die
Kelly Sheridan, Staff Editor, Dark Reading,  5/17/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: Who replaced the "Scroll Lock" key with a "Screen Lock" key?
Current Issue
Building and Managing an IT Security Operations Program
As cyber threats grow, many organizations are building security operations centers (SOCs) to improve their defenses. In this Tech Digest you will learn tips on how to get the most out of a SOC in your organization - and what to do if you can't afford to build one.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-12173
PUBLISHED: 2019-05-18
MacDown 0.7.1 (870) allows remote code execution via a file:\\\ URI, with a .app pathname, in the HREF attribute of an A element. This is different from CVE-2019-12138.
CVE-2019-12172
PUBLISHED: 2019-05-17
Typora 0.9.9.21.1 (1913) allows arbitrary code execution via a modified file: URL syntax in the HREF attribute of an AREA element, as demonstrated by file:\\\ on macOS or Linux, or file://C| on Windows. This is different from CVE-2019-12137.
CVE-2019-12168
PUBLISHED: 2019-05-17
Four-Faith Wireless Mobile Router F3x24 v1.0 devices allow remote code execution via the Command Shell (aka Administration > Commands) screen.
CVE-2019-12170
PUBLISHED: 2019-05-17
ATutor through 2.2.4 is vulnerable to arbitrary file uploads via the mods/_core/backups/upload.php (aka backup) component. This may result in remote command execution. An attacker can use the instructor account to fully compromise the system using a crafted backup ZIP archive. This will allow for PH...
CVE-2019-11644
PUBLISHED: 2019-05-17
In the F-Secure installer in F-Secure SAFE for Windows before 17.6, F-Secure Internet Security before 17.6, F-Secure Anti-Virus before 17.6, F-Secure Client Security Standard and Premium before 14.10, F-Secure PSB Workstation Security before 12.01, and F-Secure Computer Protection Standard and Premi...