filtering – WindowsTechs.com

Content filtering in DTH Device

Posted on June 15, 2023 by Bilbin

How content filtering happens (based on each region) in IP and Non-IP (DTH) based device?

Continue reading Content filtering in DTH Device→

Detecting Applications Using ChatGPT

Posted on May 26, 2023 by David Wisniewski

I am looking to detect applications using ChatGPT on our company network and block them. This is mainly to stop people copy and pasting our entire code base into ChatGPT to "optimize" it.
I think I have the text part for the most… Continue reading Detecting Applications Using ChatGPT→

Does TLS 1.3 spec include additional privacy controls for avoiding URL category filtering?

Posted on March 14, 2023 by Mike B

I’ve heard second-hand that the TLS 1.3 spec includes additional functionality to avoid URL category list filtering by firewalls and cloud-based proxies. Is that correct? If so, is there any documentation on how that works?
I can’t seem … Continue reading Does TLS 1.3 spec include additional privacy controls for avoiding URL category filtering?→

Bypass network security filters with CDN

Posted on December 26, 2022 by user32725

I read about Domain Fronting technique, it bypasses network security filters but requires a relatively complex configuration (having evil.com pointing to a.cdn.net, and good.com pointing to b.cdn.net, then we send a request to good.com whi… Continue reading Bypass network security filters with CDN→

PHP 7.4.3 preg_match bypass

Posted on May 23, 2022 by The Modern Gamer

I want to filter user input like this:
$data = file_get_contents(‘php://input’);

if ($data != null && $data !==”) {
$parsedData = json_decode($data, true);
}

// find quickmodule name
$moduleName = $_GET[‘module’];

// valida… Continue reading PHP 7.4.3 preg_match bypass→

Python Scripting for File Filtering With FTK

Posted on April 7, 2022 by AccessData

This week, we’re combining Python and filtering for some forensic shenanigans on this week’s episode of FTK Feature Focus.

Welcome to FTK Feature Focus. I’m Justin Tolman, the director of training over North America here at E… Continue reading Python Scripting for File Filtering With FTK→

Is it possible to block all public VPN users IPs? [closed]

Posted on March 16, 2022 by Sir Muffington

First of all, this is not a duplicate of Is it possible to block all the VPNs by inspecting upper layer protocol field? since the question is different.
My goal is to block all public VPN users like from ExpressVPN, Private Internet Access… Continue reading Is it possible to block all public VPN users IPs? [closed]→

Is firewall egress filtering an effective tool when we all use the same small collection of cloud services?

Posted on January 11, 2022 by 1n1g0

I know this is a controversial topic and answers can be found all over the internet. However all the ones that I found seemed dated. Since security is an ever-evolving thing I figured it’s worth revisiting.
With threat actors (and red team… Continue reading Is firewall egress filtering an effective tool when we all use the same small collection of cloud services?→

Is an IP based whitelist practical for controlling internet use?

Posted on September 28, 2021 by Frank

I have to set up internet controls for our schools study hall/testing center. The idea is that computers on that network should only be able to access the school’s webportal and learning platform that the school uses during class hours, b… Continue reading Is an IP based whitelist practical for controlling internet use?→