Articles about pen | UserComp.com

Fixing SSL Handshake Error: Not Connecting to Server Providing Certificates Signed Using SHA1RSA (Linux, OpenSSL 3)

Having trouble connecting to a server due to a certificate signed using SHA1RSA? Learn how to resolve the SSL handshake error on Linux using OpenSSL 3. Follow our step-by-step guide to ensure a secure connection.

Can't Reach Another Computer via OpenVPN on CentOS (Azure IP: 10.5.0.4, OpenVPN IP: 10.6.0.4)

Having issues reaching another computer via OpenVPN on your CentOS machine with Azure IP 10.5.0.4 and OpenVPN private address 10.6.0.4? This article provides a possible solution for connecting your networks. Read more to learn how to troubleshoot.

Fixing OpenVPN Error: Unrecognized Option Missing Parameters

In this tech support article, we will tackle the OpenVPN error message 'unrecognized option missing parameters'. This issue can occur when configuring the OpenVPN client and can prevent a successful connection. We will go through the steps to identify and resolve this error to ensure a smooth and secure connection.

Adding a Background Image to Your Signature in Okular

Learn how to add a background image to your signature in Okular, a popular document viewer for Linux. This tutorial assumes you have already generated a certificate using Open-SSL. We'll walk you through the steps to enhance your signature with a personal touch.

Setting Up SOCKS5 Proxy with OpenSSH for Traffic Proxying

Learn how to create a SOCKS5 proxy on an OpenSSH server and configure your SSH client to forward traffic. Utilize SSH for secure and encrypted data transmission while proxying traffic. This guide covers the basics of SSH dynamic port forwarding and setting up a SOCKS5 proxy for enhanced security and privacy.

Setting Up Network with Two Routers: ISP-Provided GXTitanium-2122A and Bought TP-Link Archer C1200 for OpenVPN Server

This article provides a guide on setting up a network with two routers: an ISP-provided GXTitanium-2122A and a bought TP-Link Archer C1200 for OpenVPN server capabilities. The tutorial includes port forwarding on the ISP-provided router for optimal connectivity.

CompactFlash Card Adapter Not Working on ThinkPad 760E (MMX Pentium)?

Users of IBM ThinkPad 760E with MMX Pentium processors report issues with CompactFlash card adapters not working. This article discusses potential solutions for this problem.

Using Compatibility Numbers with Excel openpyxl: A Step-by-Step Guide

In this article, we will discuss how to use compatibility numbers with openpyxl in Excel. We will walk through an example and provide code snippets to help you understand the process. Let's get started!

Easily Creating a Req File with Easy-RSA for SSL Certificate

Learn how to create a req file using Easy-RSA for building an SSL certificate, even if you're not directly familiar with OpenSSL.

Configuring OpenSSL for SSL Certificate Creation (Windows Novice)

Learn how to configure OpenSSL for creating SSL certificates on a Windows system. This article is for beginners who may not be familiar with the process.

Failed to Import David Smith's Styling Background Image in OpenSCAD

User encounters issues importing David Smith's styling background image into OpenSCAD. The import fails, leaving the user puzzled. Craig S. Kaplan's page is referenced for potential solutions.

Solving Open/Closed Raw Socks with Hping3 Tool: A Tech Support Guide

Learn how to use Hping3 tool to diagnose and solve open and closed raw sockets issues. This tech support article provides a step-by-step guide for both Linux and Windows users.

Configure Local Machine to Use Another Local Machine's DNSMasq for Local Domains in OpenShift Network

Learn how to configure your local machine to use another local machine's DNSMasq to resolve local domains in an OpenShift network.

Can a Pentium E6500 with 4GB RAM and Windows Vista support a GPU pair without bottlenecking?

This article discusses the compatibility of a Pentium E6500 CPU with 4GB RAM and Windows Vista when using a GPU pair. Find out if the CPU will bottleneck the graphics cards.

Cannot Reach Another Computer Via OpenVPN on CentOS: Azure IP Addresses

This article explains how to resolve the issue of not being able to reach another computer via OpenVPN on a CentOS machine with Azure IP addresses for both the CentOS and OpenVPN machines.

C++ Headers Not Found with pip install on MSYS2/Mingw64 for OpenBLAS

Learn how to install OpenBLAS headers for C++ development on MSYS2 using Mingw64 and pip.

Generate OPENSSH-RSA Key Deriv for GitHub Repository on Windows 10

Learn how to generate an OPENSSH-RSA key deriv for GitHub authentication on Windows 10.

Setting up DKIM on a MacOS Home Server with Dovecot and OpenDKIM

Learn how to set up DomainKeys Identified Mail (DKIM) on a MacOS home server using Dovecot and OpenDKIM. Follow these steps to improve email security and deliverability.

Yum checkdependencies Gives Unclear Answer: Understanding the Container Output

When running the yum checkdependencies command on an RHEL 7.2 machine, you may encounter a container output that seems unclear. In this article, we will explain what this output means and how to interpret it.

Configuring ReyeeRG-E5 Router for OpenVPN: IP Exposed Despite VPN Location

Learn how to configure the ReyeeRG-E5 router for OpenVPN use while preventing IP exposure to the world. Discover solutions to resolve the issue of IP addressing despite VPN location.

Configuring a ReyeeRG-E5 Router for OpenVPN: IP Address Exposed Despite VPN Connection

This article explains how to configure a ReyeeRG-E5 router to use OpenVPN while preventing IP address exposure. Despite the successful VPN connection, the router's IP address is still being resolved by the external world. We will guide you through the steps to resolve this issue.

Tackling Unmet Dependencies and Broken Packages in Debian: A Steam (Nala) Installation Issue

Encountered 70 broken packages while attempting to install Steam via an alternative Debian repository. Learn how to repair and fix these issues to successfully install Steam.

Creating a Docker Container for React: Installing Dependencies Once

Learn how to create a Docker container for a React project and install dependencies only once.

OpenSSL Refusing SHA-3-256 MD: Troubleshooting Nginx Certificate Signing

When creating a local root CA using OpenSSL with Nginx, the system might indicate the use of SHA-3-256 for signing the certificate, but OpenSSL refuses to comply. This article discusses possible causes and solutions for this issue.

WOWLAN and OpenVPN Stop Working Minutes After Connection

Users report that WOWLAN and OpenVPN stop working minutes after establishing a connection on their routers. This issue can occur on various devices, including smartphones and computers, when connecting to a public IP. In this article, we'll discuss possible causes and solutions for this problem.

Unable to Access USB Webcam within Raspbian OS VM using OpenCV

This article explains how to access a USB webcam within a Raspbian OS Virtual Machine using OpenCV, and provides solutions for common errors encountered during setup.

OpenWRT: Rewriting Destination IP Address for Local Server on Network LAN

Learn how to rewrite the destination IP address for a local server on a Network LAN using OpenWRT.

Automating PowerPoint with OpenPresentation Events: A Tech Support Guide

In this tech support article, we'll guide you through setting up PowerPoint to run automatically using OpenPresentation Events and ActiveX comboboxes. Familiarize yourself with events before proceeding.

Resolving ssh-add Invalid Format Error with OpenSSH

This article explains how to resolve an 'Invalid Format' error encountered when attempting to add a new SSH key to the ssh-agent using OpenSSH.

Windows OpenSSH Rejects Key: Default Shell Set Registry

This article explains how to resolve an issue where Windows OpenSSH rejects key-based authentication due to a default shell set in the registry.

Differentiating SaaS from Self-Hosted Discourse CMS Instances for End Users

Understanding the differences between Software-as-a-Service (SaaS) and self-hosted Discourse CMS instances is crucial for end users. Learn how to distinguish between the two.

OpenBox Hides Cursor on Raspberry Pi: A Tech Support Query

A user reports that OpenBox, the autostart GUI application on Raspberry Pi, launches applications but leaves the cursor visible in the middle of the screen. Let's explore a possible solution.

Exploring Advanced Features of TP-Link Archer C20v5 (US) Router with OpenWrt Firmware

Discover how to unlock advanced features and customization options on your TP-Link Archer C20v5 (US) router by installing OpenWrt firmware.

Maintaining CentOS 7 Past EOL: Using Vault Repos for Yum Config, Troubleshooting OpenSSL and OpenJDK Package Installations

Learn how to maintain a CentOS 7 hosted service past its End of Life (EOL) by using Vault repositories to update your system configuration. This guide covers troubleshooting OpenSSL and OpenJDK package installations.

Windows 11: Applications Take Seconds to Open for the First Time

Experience longer than usual application opening times on your Windows 11 system during the first launch? Learn possible causes and solutions.

Strange Characters in Terminal: Troubleshooting Allwinner H3 and OpenWRT

Experiencing strange characters in the terminal while connected to an Allwinner H3 machine using OpenWRT? This article provides some troubleshooting steps to help you resolve the issue.

Troubleshooting OpenVPN: Understanding the Need for Multiple Connection Attempts

OpenVPN may require multiple connection attempts to establish a successful connection. This article explains why and offers solutions when encountering error messages.

Understanding Openwall and John the Ripper: No John Command Parameters

In this tech support article, we'll discuss using Openwall and John the Ripper without explicitly passing any command parameters. This can be a common confusion for new users, as the documentation may not be clear on this point. We'll provide some context and suggest some workarounds.

Understanding OpenWALL and the Use of 'John' Command

This article provides an overview of OpenWALL and explains the use of the 'John' command in its context. While OpenWALL documentation does not explicitly mention the John command without parameters, this article aims to clarify its purpose and usage.

Encrypting Excel Cell Values using OpenSSL: Single Column

Learn how to encrypt values in a single column of an Excel file using OpenSSL. This article provides a step-by-step guide for Windows users.

Setting up Access Devices with OpenWRT Router for LAN and Wireguard VPN

Learn how to set up access devices on a network with an OpenWRT router, including LAN and Wireguard VPN configurations.

Running OpenConnect VPN Server on Debian 11: Set Up Your Own DNS Server Machine

Learn how to set up and run an OpenConnect VPN server on Debian 11, and configure it to use your own DNS server machine.

Troubleshooting Slow OpenVPN Connection on Windows Server

This article provides solutions to resolve slow OpenVPN connections on a Windows Server. Users who have successfully accessed the remote WebServer but experienced slow connection speeds are encouraged to read on.

Using Built-in OpenVPN Client on ASUS RT-AC66U Router with Existing Linux Server

Learn how to use the built-in OpenVPN client on ASUS RT-AC66U router to connect to a Linux OpenVPN server. This guide assumes that your Linux server setup is already working fine.

Fritzbox Not Answering Ping: Machines on Subnet with OpenVPN Connection

Users report that their Fritzbox router is not responding to pings from machines on the subnet when an OpenVPN connection is in use. This article provides suggested solutions for troubleshooting and resolving the issue.

VPNs and Corporate Proxy Servers: SSL Inspection/DPI with OpenVPN

Learn how to configure OpenVPN to work with SSL inspection or Deep Packet Inspection (DPI) on corporate proxy servers. This article provides a solution for users experiencing connection resets when using OpenVPN with SSL inspection.

Resolving 'CantConnectExternalNodes' in Main Percona ReplicaSet Cluster with OpenShift

This article explains how to resolve the 'CantConnectExternalNodes' issue in a Main Percona ReplicaSet Cluster running on OpenShift. We'll discuss adding unmanaged cluster nodes and exposing node ports.

Loginctl Hooks Not Working: Expected Sessions in Suspend Mode

When using OpenRC init system and attempting to suspend a system with locking sessions using loginctl hooks, the locking process may not work as expected. In this article, we will discuss the purpose of loginctl hooks and provide solutions to resolve this issue.

Embedded Google Maps with Tagged Business Locations: A Common Practice

Many websites display embedded Google Maps with tagged business locations. In this article, we'll discuss how to implement this feature and optimize it for search engines.

NAS Not Connecting to Network: A Guide to Troubleshooting OpenMediaVault

This article provides a step-by-step guide to troubleshooting OpenMediaVault when it fails to connect to the network during the out-of-box experience.

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