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
Threaded  |  Newest First  |  Oldest First
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
Florida Town Pays $600K to Ransomware Operators
Curtis Franklin Jr., Senior Editor at Dark Reading,  6/20/2019
Pledges to Not Pay Ransomware Hit Reality
Robert Lemos, Contributing Writer,  6/21/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
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
The State of IT Operations and Cybersecurity Operations
The State of IT Operations and Cybersecurity Operations
Your enterprise's cyber risk may depend upon the relationship between the IT team and the security team. Heres some insight on what's working and what isn't in the data center.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-12960
PUBLISHED: 2019-06-25
LiveZilla Server before 8.0.1.1 is vulnerable to SQL Injection in functions.internal.build.inc.php via the parameter p_dt_s_d.
CVE-2019-12961
PUBLISHED: 2019-06-25
LiveZilla Server before 8.0.1.1 is vulnerable to CSV Injection in the Export Function.
CVE-2019-12962
PUBLISHED: 2019-06-25
LiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header.
CVE-2019-12963
PUBLISHED: 2019-06-25
LiveZilla Server before 8.0.1.1 is vulnerable to XSS in the chat.php Create Ticket Action.
CVE-2019-12964
PUBLISHED: 2019-06-25
LiveZilla Server before 8.0.1.1 is vulnerable to XSS in the ticket.php Subject.