Articles about ssl | UserComp.com

Adding Private key SSL Cert to IIS: CSR and File Instructions

Resolve SSL handshake errors in IIS by importing an issued certificate and binding it to the original private key.

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Generating OpenVPN TLS-Crypt Key with OpenSSL

Generate a 256-bit ta.key file to encrypt OpenVPN TLS handshakes and hide VPN usage from network observers.

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P12 Certificate Authentication

Solves secure VPN client authentication by bundling private keys and certificates into encrypted PKCS#12 files for IPsec and OpenVPN.

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Client Fails TLS Handshake: Troubleshooting Guide

Resolve client TLS handshake failures caused by Nginx cipher mismatches, incomplete certificate chains, or outdated protocol configurations.

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Invalid SSL Certificate for Wikimedia on LAN: Troubleshooting Guide

Resolve invalid SSL certificate errors for Wikimedia on LAN by syncing system time, checking proxy interception, and inspecting local DNS settings.

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Downgrading SSL Version from v3.0 to 1.1 in Mac OS (10.14.2) Guide

This article explains why macOS 10.14.2 disables SSLv3 and TLS 1.1 for security reasons and guides users to verify their current TLS version using command-line tools or Safari developer options.

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Cloudflare SSL Termination with Docker: Host vs. Containers

Configure Cloudflare and Docker to terminate SSL at the edge, allowing containers to handle unencrypted HTTP traffic without internal certificates.

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Docker and Certificates: Not Creating SSL Certificates Inside Docker

Resolve SSL certificate loss in Docker by generating certificates on the host and mounting them into containers via volumes for persistence.

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Adding a Background Image to Your Signature in Okular

Resolve the inability to embed background images in digital signature fields within Okular by manually inserting visual elements before applying cryptographic signatures.

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OSSL Cipher Unpad Block: Bad Decrypt Error in Red Hat Script

Resolve OSSL_CIPHER_UNPAD_BAD_DECRYPT errors in Red Hat scripts by verifying key integrity, checking for file corruption during transfer, and ensuring correct IV usage.

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SSL Connect Error: schannel Next InitializeSecurityContext Failed: SEC_E_ILLEGAL_MESSAGE

Resolve SSL connect errors caused by SEC_E_ILLEGAL_MESSAGE by updating root certificates, adjusting cURL protocol settings, and syncing the system clock.

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Get Certificate Expiry Date in Unix Time Format

Convert an SSL certificate's expiration date to a Unix timestamp for scripting and monitoring on Linux, macOS, or BSD.

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Modern Browsers Encountering SSL Errors: Certificate Installation Issue in Windows

Resolve SSL certificate errors in modern browsers on Windows by manually installing missing intermediate or root certificates into the system store.

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FTPS (FTP SSL/TLS) Not Working: Rejecting Data Connection

Resolve FTPS data connection rejection errors by switching to passive mode and configuring the server firewall to allow the specific passive port range.

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How to Show Output in OpenSSL When Decrypting with a Wrong Password

Resolve missing decrypted output when using wrong passwords by capturing stderr and checking exit codes instead of expecting plaintext.

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Setting store SSL cert/private key file permissions for a Node.js REST API

Resolve Node.js SSL permission errors by setting private key to 600 and certificate to 644.

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Troubleshooting Wireless LAN Adapter: Local Area Connection*13*14 Not Connected

Resolve the Wireless LAN adapter Local Area Connection*13*14 not connected error by resetting the network stack, updating drivers, and verifying physical connectivity.

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Fixing Apache PHP Project: Large Post Requests (40MB) with 500 Internal Error

Resolve 500 Internal Server Error for large POST requests by increasing post_max_size, upload_max_filesize, and LimitRequestBody.

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Google Domains SSL Certificate Not Applied to Subdomain on EC2

Resolve SSL certificate application failures for subdomains on EC2 by configuring AWS Certificate Manager DNS validation within Google Domains.

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FFMPEG Lossless Still Image + Sound: How to Combine Images and Audio in a Lossless Format

Combine a still image with audio into a lossless WebM file using FFmpeg by setting VP9 CRF to 0 and copying the audio stream.

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Slow Initial Connection (SSL Handshake) in Chrome Browser: Quick Fix

Resolve slow initial Chrome connections by clearing SSL cache, disabling hardware acceleration, and verifying proxy settings.

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Checking SSL Certificate for User Authentication when Accessing Site from Outside the Zone

Resolve SSL certificate-based user authentication failures for external clients by configuring server trust stores and verifying client certificate validity.

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FortiClient VPN Stuck at 48% with Error Code -7200

Resolve FortiClient VPN error -7200 stuck at 48% by verifying credentials, updating certificates, and checking network configurations.

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

Generate SSL certificate signing requests using Easy-RSA to automate PKI setup and avoid complex OpenSSL syntax.

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Find an SSL certificate with Powershell that is NOT expired

Retrieve non-expired SSL certificates from the Windows certificate store using PowerShell by filtering the NotAfter property against the current date.

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Merge Audio Tracks (Concat) Losslessly with FFmpeg Online

Merge multiple M4A files into a single lossless track using FFmpeg's concat demuxer to avoid re-encoding and preserve original audio quality.

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SSL: CERTIFICATE_VERIFY_FAILED when calling Azure library in docker container and in VS code running locally

Resolve SSL CERTIFICATE_VERIFY_FAILED errors in Azure Python libraries by installing CA bundles in Docker and configuring trust stores locally.

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What comes first - Certbot or nginx?

Resolves Certbot ACME HTTP-01 challenge failures by ensuring nginx is installed and listening on port 80 before certificate issuance.

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How to Avoid Requesting Instructions with OpenSSL Config File in Tech Support

Resolve interactive OpenSSL prompts during CSR generation by using the -subj flag or a configuration file for automated, consistent certificate requests.

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Upgrading Network Infrastructure: Ideas for SSL VPN Connected Sites

Eliminate SSL VPN bottlenecks and DDNS instability by implementing site-to-site IPsec tunnels with static IPs for resilient multi-site connectivity.

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SSH and OpenSSL: Decrypting RSA Private Keys with ssh-add and openssl pkeyutl

Resolve confusion about decrypting RSA keys by clarifying that ssh-add loads unencrypted keys into memory and providing OpenSSL commands to encrypt or remove passphrases from key files.

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How to Set Length of Certificate Serial Number Explicitly?

Control certificate serial number encoding size by manually editing the CA index file or using the -set_serial flag with a specific integer value.

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Resolving Perforce Error: SSL Routines: Unexpected EOF Reading Operation Completed Successfully

Resolve Perforce SSL handshake failures caused by certificate mismatches, outdated clients, or network interference.

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How to Configure cURL for Authenticated SMTP Connection with Self-Signed CA Certificate

Resolve cURL SSL verification errors when connecting to SMTP servers using self-signed CA certificates by specifying the certificate file with the --cacert flag.

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Power BI Connection Error: SSLProvider, error: 0 on SQL Server 2016

Fix Power BI SSLProvider error 0 on SQL Server 2016 by enabling Force Encryption and configuring ODBC driver encryption settings.

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How to disable SSL checking on Nginx?

Resolve 502 Bad Gateway errors caused by invalid or self-signed SSL certificates when Nginx proxies HTTPS traffic.

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How to Install SSL on XAMPP Self-Hosted Website

Resolve SSL configuration errors in XAMPP by generating self-signed certificates and updating Apache settings for local HTTPS access.

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Debug Folder No Permission in Kali Linux for OpenSSL Programs

Resolve OpenSSL permission denied errors in Kali Linux by changing debug folder ownership using chown.

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PHP OpenSSL Encode/Decode Multiple String

Resolve PHP OpenSSL decryption failures by storing unique IVs with ciphertext for each string.

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How to View Subject Alternate Names in Google Chrome

View Subject Alternate Names in Google Chrome by clicking the padlock icon, selecting Certificate, and checking the Details tab for the SAN field.

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Wget Error: Certificate <domain> Signed Using Insecure Algorithm - Wget vs Curl

Resolve Wget errors caused by certificates signed with insecure algorithms like SHA-1 by updating the server certificate or using specific flags.

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SSLError Installing Rust on Windows Subsystem for Linux with ZScaler Network

Resolve SSLError when installing Rust on WSL with ZScaler by importing the ZScaler root CA into the Linux trust store.

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How to Fix the ERR_SSL_PROTOCOL_ERROR Issue on Chrome

Resolve ERR_SSL_PROTOCOL_ERROR in Chrome by clearing SSL state, syncing system time, and disabling conflicting VPNs or proxies.

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

Resolve yum failures and package dependency errors on EOL CentOS 7 by migrating to Vault repositories.

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SSL Verification Problem When Uploading a Deb Package Using dput

Fix SSL certificate verification failures when uploading Debian packages with dput by updating the system CA store or configuring trusted certificates.

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Troubleshooting Nginx Server: Issues with Reading PEM Key from Ionos

Resolve Nginx SSL errors from Ionos PEM keys by fixing file permissions and concatenating the full certificate chain.

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How to Update OpenSSL to 3.1.1 from 1.0.2n in Node.js

Resolve outdated OpenSSL 1.0.2n in Node.js by upgrading the runtime to a supported LTS version that bundles secure cryptographic libraries.

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Postfix 3.7 and OpenSSL 3: Configuring DH Parameters

Resolve Postfix 3.7 TLS failures with OpenSSL 3 by configuring explicit Diffie-Hellman parameters to ensure secure mail server connections.

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Converting Encrypted RSA Private Key to Unencrypted Format using OpenSSL 3.3.0 on Mac

Remove passphrase protection from an encrypted RSA private key on macOS using OpenSSL 3.3.0 to enable automated script usage.

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EAP-TLS SSL Handshake Failure: Unknown CA (Fatal, Level: 1)

Resolve EAP-TLS Unknown CA errors by ensuring the server presents the full certificate chain and the client trusts the issuing root CA.

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