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:


Socialscan - Command-Line Tool To Check For Email And Social Media Username Usage Socialscan – Command-Line Tool To Check For Email And Social Media Username Usage
socialscan is an accurate command-line tool to check For email and social media username usage on online platforms, given an email address or username,
CFRipper - CloudFormation Security Scanning & Audit Tool CFRipper – CloudFormation Security Scanning & Audit Tool
CFRipper is a Python-based Library and CLI security analyzer that functions as an AWS CloudFormation security scanning and audit tool
CredNinja - Test Credential Validity of Dumped Credentials or Hashes CredNinja – Test Credential Validity of Dumped Credentials or Hashes
CredNinja is a tool to quickly test credential validity of dumped credentials (or hashes) across an entire network or domain very efficiently.
assetfinder - Find Related Domains and Subdomains assetfinder – Find Related Domains and Subdomains
assetfinder is a Go-based tool to find related domains and subdomains that are related to a given domain from a variety of sources including Facebook and more.
Karkinos - Beginner Friendly Penetration Testing Tool Karkinos – Beginner Friendly Penetration Testing Tool
Karkinos is a light-weight Beginner Friendly Penetration Testing Tool, which is basically a 'Swiss Army Knife' for pen-testing and/or hacking CTF's.
Aclpwn.Py - Exploit ACL Based Privilege Escalation Paths in Active Directory Aclpwn.Py – Exploit ACL Based Privilege Escalation Paths in Active Directory
Aclpwn.py is a tool that interacts with BloodHound< to identify and exploit ACL based privilege escalation paths.


Comments are closed.