Category: Networking

Just spent the day digging through a box of old gear to relegate for network extension duties. These tests were done in bridge mode from about 20 ft from the main router through 2...

Introduction There was a time when you could determine the size of a file by counting the number of characters it had. One character equates to one byte. Simple. In fact, it was how I found the office perpetrator who printed out...

After years of having to manually renew certificates (I’ve used StartSSL in the past), Let’s Encrypt is finally live and will allow you to automate this process by installing an agent and a cron job. Here I’m...

Generally there are three ways of reverting changes: checkout revert reset Checkout If you just need to revert specific files, you could run git checkout to retrieve an exact version. In the below example, I wanted to revert the...

If you haven’t done so, install Vagrant for your OS here. vagrant plugin install vagrant-digitalocean mkdir vagrant_project cd vagrant_project vagrant init Generate your key pairs. If using Windows, use puttygen. In...

OpenVPN Access Server’s free license provides two user accounts free of charge. sudo wget http://swupdate.openvpn.org/as/openvpn-as-2.0.12-Ubuntu14.amd_64.deb sudo dpkg -i openvpn-as-2.0.12-Ubuntu14.amd_64.deb sudo passwd...

My goal is to host multiple Wordpress blogs on a single Ubuntu server. This will be for outbound email only. Setting up SMTP for each of my blogs by selecting from a plethora of plugins isn’t a sound solution. With...

When updating rvm getting error message like the following. GPG signature verification failed for '/usr/local/rvm/archives/rvm-1.26.5.tgz' - 'https://github.com/wayneeseguin/rvm/releases/download/1.26.5/1.26.5.tar.gz.asc'! try...

en config t write erase config factory-default (space through all the pages) reload (Don’t save current config) Say no to interactive prompts en (There’s no password) config t enable password [specify enable...

Go into “config terminal” mode. crypto key generate rsa modulus 1024 ssh 0.0.0.0 0.0.0.0 inside ssh 0.0.0.0 0.0.0.0 outside You can specify exact addresses you wish to allow access if you wish. ssh timeout 10 ssh...

DHCP Address Pool dhcp address 192.168.1.5-192.168.1.132 inside DHCP DNS Servers dhcp dns 8.8.8.8 DHCP Lease Length dhcp lease 3000 (in seconds) DHCP Domain Name dhcp domain testing.com DHCP Gateway dhcp option 3 [gateway ip]...