Mike's Tech Blog

How to find files in Ubuntu

All too often you need to find a specific file in Ubuntu. When I need to find files, the "search for Files" tool is usually inadequate for me. So I typically open up the Terminal and use the find command, which can be found to be a bit tricky to use, but powerful.

How to Change the Default SSH port in Ubuntu

Operating Systems - Ubuntu Linux

When I set up an Ubuntu server, I like to set set SSH daemon to a port to something other than the default of port 22. Changing the SSH port doesn't guarantee security for your Ubuntu server, but it does

Windows Media Player Security Information Could Not Be Validated

Operating Systems - Microsoft / Windows

Recently I was working on a computer using Windows Media Player when all of a sudden an error message popped up that said "windows media player security information from server could not be validated" and I couldn't hear the audio I was trying to listen to. Here is how to fix this issue:

Set up WiFi Router on an IPcop Blue Interface

Networking - IPcop

Setting up an open Wifi with an IPcop firewall can be a bit tricky. But not too difficult. You need to have a NIC set up for the Blue interface. This way you can have people connect and use your wifi without getting into your regular (Green) network. A typical scenario would be for a coffee shop what wants to provide free wifi to their customers.

Security Certificate Error from Websites

Operating Systems - Microsoft / Windows

The other day my boss called me into his office and said that he was getting lots of Security Certificate messages when he would go to various websites.