LevelBlue Completes Acquisition of Cybereason. Learn more

Request a Demo

LevelBlue Completes Acquisition of Cybereason. Learn more

Submit RFP
Request a Demo
Services
Cyber Advisory
Managed Cloud Security
Data Security
Manage Detection & Response
Email Security
Managed Network Infrastructure Security
Exposure Management
Security Operations Platforms
Incident Readiness & Response
SpiderLabs Threat Intelligence
View All Services
Solutions
BY INDUSTRY
BY REGULATION
BY TOPIC
Offensive Security
Solutions to maximize your security ROI
Operational Technology
End-to-end OT security
Microsoft Security
Unlock the full power of Microsoft Security
Securing the IoT Landscape
Test, monitor and secure network objects
Why LevelBlue
About Us
We reduce cyber risk and fortify organizations
Awards and Accolades
Recognition by analysts and media outlets
LevelBlue SpiderLabs
Global researchers, ethical hackers, and responders
LevelBlue Security Operations Platforms
Unprecedented security visibility and control
Security Colony
Access to cybersecurity threat protection resources
Partners
Microsoft
Unlock the full power of Microsoft Security
Technology Alliance Partners
Key alliances who align and support our ecosystem of security offerings
Register
Login
Resources
BLOGS
UPCOMING
MEDIA & ASSETS
NOTICES
HELP

Output filtering now in CVS

Change theme to light
1 Minute Read by Admin

The new output filtering functions are now in CVS. I implemented this feature for Apache 2 first because of two reasons. First, this version supports the notion of input/output filters - making filtering work is simply a case of using the module API. In addition to that, I've been using mod_security as part of a reverse proxy for some time now and I really, really wanted it to be able to filter output.

As for Apache 1.x, well, I have a pretty good idea how I would be able to implement output filtering even without an API support. It is tricky, and I am not sure whether it will be portable (to Windows) but I'll give it a try.

To use output filtering, first turn it on by typing:

SecFilterOutput On

You are then free to apply filters against the output using a new selective filtering variable "OUTPUT". LIke this:

SecFilterSelective OUTPUT "some rude word"

ABOUT LEVELBLUE

LevelBlue is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats. Our comprehensive offensive and defensive cybersecurity portfolio detects what others cannot, responds with greater speed and effectiveness, optimizes client investment, and improves security resilience. Learn more about us.

Latest Intelligence

Microsoft Issues Emergency Patch for Windows Server Update Services RCE Vulnerability CVE-2025-59287
SharpParty: Process Injection in C#
The Cat's Out of the Bag: A 'Meow Attack' Data Corruption Campaign Simulation via MAD-CAT

Discover how our specialists can tailor a security program to fit the needs of
your organization.

Request a Demo