HiddenWall – Create Hidden Kernel Modules


HiddenWall is a Linux kernel module generator used to create hidden kernel modules to protect your server from attackers. It supports custom rules with netfilter (block ports, hidden mode, rootkit functions etc).

HiddenWall - Create Hidden Kernel Modules


The motivation is basically another layer of protection, much like a hidden firewall – setting securelevel to 2 on BSD would have a similar effect.

In a typical attack, the bad actor can alter your IPTables or UFW rules – with HiddenWall you still have another layer that can block external access because it hooks directly into netfilter from kernel land.

The author created it to protect his own servers but realised it also helps people who can’t write low-level code roll their own customized, hidden kernel modules.

If you can write low-level code, you can always add more module templates to HiddenWall.

Installing HiddenWall to Create Hidden Kernel Modules

Verify if the kernel version is 3.x, 4.x or 5.x:

Clone the repository

Enter the folder

Edit your firewall rules in directory rules/server.yaml, the python scripts use that file to generate a new firewall module.

If you want to study the static code to generate, look the content at directory “templates”.

Then you would want to generate a kernel module following your YAML file of rules:

Then install it with insmod.

You can download HiddenWall here:

HiddenWall03.zip

Or read more here.

Posted in: Security Software


Latest Posts:


SharpHose - Asynchronous Password Spraying Tool SharpHose – Asynchronous Password Spraying Tool
SharpHose is an asynchronous password spraying tool in C# for Windows environments that takes into consideration fine-grained password policies and can be run over Cobalt Strike's execute-assembly.
Axiom - Pen-Testing Server For Collecting Bug Bounties Axiom – Pen-Testing Server For Collecting Bug Bounties
Project Axiom is a set of utilities for managing a small dynamic infrastructure setup for bug bounty, basically a pen-testing server out of the box with 1-line.
Quasar RAT - Windows Remote Administration Tool Quasar RAT – Windows Remote Administration Tool
Quasar is a fast and light-weight Windows remote administration tool coded in C#. Used for user support through day-to-day administrative work to monitoring.
Pingcastle - Active Directory Security Assessment Tool Pingcastle – Active Directory Security Assessment Tool
PingCastle is a Active Directory Security Assessment Tool designed to quickly assess the Active Directory security level based on a risk and maturity framework.
Second Order - Subdomain Takeover Scanner Tool Second Order – Subdomain Takeover Scanner Tool
Second Order Subdomain Takeover Scanner Tool scans web apps for second-order subdomain takeover by crawling the application and collecting URLs (and other data)
Binwalk - Firmware Security Analysis & Extraction Tool Binwalk – Firmware Security Analysis & Extraction Tool
Binwalk is a fast and easy to use Python-based firmware security analysis tool that allows for firmware analysis, reverse engineering & extracting of firmware.


Comments are closed.