ACLs by Country

Have you ever wanted to create an ACL by country?  There's a number of different ways you can go about it.  Certain models of firewalls have this functionality built in.  IOS based routers and ASA firewalls have no such capability, so we'll have to do this a bit more manually.  I'll present two methods. The first method is detailed here.  In this post, wget goes out...

TCL Scripting

According to it's man page, "tclsh is a shell-like application that reads TCL commands from its standard input or from a file and evaluates them. If invoked with no arguments then it runs interactively, reading TCL commands from standard input and printing command results and error messages to standard output. It runs until the exit command is invoked or until it reaches end-of-file on its standard...

Hard Code DNS Servers with PowerShell

The following is a PowerShell script to quickly hard code DNS servers for every network interface present on a computer. It will overwrite the existing DNS servers configured on that machines interfaces.  In this example, we'll be using the IP addresses for OpenDNS servers. # The servers that we want to use $newDNSServers = "208.67.220.220","208.67.222.222" # Get all network adapters that already...

Do the Google

It still surprises me that in 2016, there are still people out there who cannot, or will not, use Google to find the answer to their question.  I'm the admin of a large group on Facebook that exists primarily for people pursuing the CCNA certification, though most technical discussion that stays on the right side of the law is permitted.  Since we get at least one question a day...