Linux and Unix
[Linux/Network] PPP/PAP Dial-Up server with VoIP and Raspberry Pi
OK, so for today’s relaxing session, I though I should setup a PPP/PAP Dial-up server using a Raspberry Pi 3 box. So here’s the hardware: […]
Linux
[Linux/Azure/Networking] Host your own open-source video conferencing solution
In these times when we need to communicate online more than ever, I though I should share how to setup an open-source solution for Video […]
[Linux] Install OpenVPN AS on a CentOS VPS
OK, so we have a CentOS 7 VPS and we want to install OpenVPN Access Server 2.6.x Ensure you have root priviledges install EPEL (you’ll […]
[PFSense] PFSense GUI/NICs won’t start after package upgrade
After installing upgrades to your PFSense 2.4.x box, you receive the following error in the console: Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/20131226/zmq.so’ […]
[Azure] Ping a host from a Linux Azure VM
OK, so we have an Ubuntu VM hosted in Microsoft Azure:
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Welcome to Ubuntu 16.04.4 LTS (GNU/Linux 4.13.0-1018-azure x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage Get cloud support with Ubuntu Advantage Cloud Guest: http://www.ubuntu.com/business/services/cloud 30 packages can be updated. 0 updates are security updates. Last login: Wed May 23 10:35:38 2018 from 86.x.x.x andrei@andrei:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.4 LTS Release: 16.04 Codename: xenial andrei@andrei:~$ |
By default, ICMP packets are blocked in Azure. So here is a workaround: […]
[Linux] Monitor Network Bandwidth Usage
Here’s a command line tool to monitor network traffic and bandwidth usage in real time. Here’s how to install it on CentOS or RedHat: […]
[Linux] Checking website performance
Here’s a nice tool to check your website performance – HTTPStat Here’s how to install it on Ubuntu: cd /tmp wget -c https://raw.githubusercontent.com/reorx/httpstat/master/httpstat.py sudo pip […]
[Linux] Monitoring disk space on Ubuntu
It’s been some time since I posted some Linux-related posts 🙂 Today, I found a really nice tool that shows you the used drive space […]
[LINUX] Create a dynamic MOTD
First you will need to install some prerequisites and build the directory structure. So here goes:
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# install lsb-release apt-get install lsb-release # install figlet to enable ASCII art apt-get install figlet # install update-motd software apt-get install update-motd # delete default directory rm -r /etc/update-motd.d/ # create new directory mkdir /etc/update-motd.d/ # create dynamic files touch 00-header ; touch 10-sysinfo ; touch 90-footer # make files executable chmod +x /etc/update-motd.d/* # remove MOTD file rm /etc/motd.dynamic |
Once the above commands have been executed, we […]
Re-enable WordPress Yubikey login after key slot reset
Scenario: you have a Yubikey and you deleted (using the Yubikey personalization tool ) the Profile 1 (usually used for out of the box OTP). After re-creating the […]