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@jchandra74
jchandra74 / openssl.MD
Last active March 17, 2025 15:25
HOWTO: Create Your Own Self-Signed Certificate with Subject Alternative Names Using OpenSSL in Ubuntu Bash for Window

HOWTO: Create Your Own Self-Signed Certificate with Subject Alternative Names Using OpenSSL in Ubuntu Bash for Window

Overview

My main development workstation is a Windows 10 machine, so we'll approach this from that viewpoint.

Recently, Google Chrome started giving me a warning when I open a site that uses https and self-signed certificate on my local development machine due to some SSL certificate issues like the one below:

Self-Signed SSL Issue in Chrome

@jchandra74
jchandra74 / PowerShell Customization.md
Last active August 20, 2025 11:13
PowerShell, Cmder / ConEmu, Posh-Git, Oh-My-Posh, Powerline Customization

Pimping Up Your PowerShell & Cmder with Posh-Git, Oh-My-Posh, & Powerline Fonts

Backstory (TLDR)

I work as a full-stack developer at work. We are a Windows & Azure shop, so we are using Windows as our development platform, hence this customization.

For my console needs, I am using Cmder which is based on ConEmu with PowerShell as my shell of choice.

Yes, yes, I know nowadays you can use the Linux subsystem on Windows 10 which allow you to run Ubuntu on Windows. If you are looking for customization of the Ubuntu bash shell, check out this article by Scott Hanselman.

@msoler8785
msoler8785 / Create-PtrRecords.ps1
Last active July 4, 2024 00:57
Quick PowerShell script to automate PTR Record creation for existing forward lookup zones.
# Creates PTR Records for all A Records in the specified -ZoneName.
# Uses a Class A Subnet for the reverse zone.
$computerName = 'dns-server01';
# Get all the DNS A Records.
$records = Get-DnsServerResourceRecord -ZoneName 'zone.example.com' -RRType A -ComputerName $computerName;
foreach ($record in $records)
{
# The reverse lookup domain name. This is the PTR Response.
$ptrDomain = $record.HostName + '.zone.example.com';
@pixeline
pixeline / mirror_remote_directory_to_local_directory
Last active May 21, 2024 19:36
Bash script using lftp to mirror remote directory to local directory, thus keeping the local directory synchronized with the remote one.
#!/bin/sh
# @author: Alexandre Plennevaux
# @description: MIRROR DISTANT FOLDER TO LOCAL FOLDER VIA FTP
#
# FTP LOGIN
HOST='sftp://ftp.domain.com'
USER='ftpusername'
PASSWORD='ftppassword'
# DISTANT DIRECTORY
@mtigas
mtigas / gist:952344
Last active September 30, 2025 09:22
Mini tutorial for configuring client-side SSL certificates.

Client-side SSL

For excessively paranoid client authentication.


Updated Apr 5 2019:

because this is a gist from 2011 that people stumble into and maybe you should AES instead of 3DES in the year of our lord 2019.

some other notes: