How to setup an Amazon AWS VPC, What is a VPC, and Subnets, Part 1 of 3

Amazon Web Services (AWS) provides the capacity to create a Virtual Private Cloud (VPC), which is a virtual network dedicated to your AWS account. In the first part of this three-part series, I will show you how to create a VPC with the corresponding subnets.

Read the rest of the articles Here

AWS VPC – Overview, setup, subnets

Get a list of computers, 32/64 bit architecture, Service Pack level, and IP address in active directory with PowerShell

To get an inventory .csv file list of all computers in AD, run the following command in powershell:

PS C:\Users\jcoltrin\Documents\powershell scripts> Get-ADComputer -Filter * -Property * | Select-Object Name,OperatingSystem,OperatingSystemServicePack,OperatingSystemVersion,ipv4* | Export-Csv -Path "c:\admin\ComputersList.csv"

This script should produce and export a .csv file list that looks like the following:

Name OperatingSystem OperatingSystemServicePack OperatingSystemVersion IPv4Address
DC01 Windows Server 2008 R2 Standard Service Pack 1 6.1 (7601)
JasonCWKS Windows 7 Professional Service Pack 1 6.1 (7601)
JColtrinWin7 Windows 7 Professional Service Pack 1 6.1 (7601)

If you want to take this further, and get the csname (computer name), caption (Operating system title), OS Architecture (32/64 bit), and ServicePackMajorVersion (service pack level) from a list of IP’s that the previous command produced you can do the following:

  1. Copy the IP addresses of all the machines to a new file called win7pcs.txt and place it in C:\admin\
  2. Open Powershell ISE  and enter the following script:
$a = Get-Content "C:\admin\win7pcs.txt" 
foreach ($i in $a) 
{Get-WmiObject Win32_OperatingSystem -ComputerName $i | Format-Table csname,caption,OSArchitecture,ServicePackMajorVersion -AutoSize

This should produce the following output for each IP address:

csname caption OSArchitecture ServicePackMajorVersion
—— ——- ————– ———————–
JasonCWKS Microsoft Windows 7 Professional 64-bit 1

csname caption OSArchitecture ServicePackMajorVersion
—— ——- ————– ———————–
JcoltrinWin7 Microsoft Windows 7 Professional 32-bit 1


How to Install ISC DHCP Server on Ubuntu 16.04

The Internet Systems Consortium (ISC) Dynamic Host Configuration Protocol (DHCP) server is free, open-source, and easy to install. Both enterprises and small networks have used ISC DHCP in production for many years.

In this guide, I’ll demonstrate how to locate your current DHCP server and then install and set up an ISC DHCP server. We’ll then move on to gaining control of your new DHCP server, best practices, monitoring the logs, and setting up static address reservations.

Read the rest of the article here:

Install ISC DHCP Server on Ubuntu 16.04

Install OpenDNS Umbrella Virtual Appliances on Hyper-V 2012 R2

You’re probably already familiar with OpenDNS; the service has long been trusted with consumer-grade firewalls and Wi-Fi Access Points. OpenDNS is now owned by Cisco, and the service is relatively inexpensive at approximately $115 for a three-year, 250-license package on CDW. OpenDNS Umbrella extends that protection to your enterprise by categorizing your DNS traffic in the OpenDNS data centers, rather than relying on your own firewall’s DNS capabilities. This is especially useful if you are running pfSense firewalls, as the packaged domain blocking and reporting is minimal in several areas.

In addition to Umbrella, OpenDNS can protect your roaming devices by installing a remote client. For now, we’ll look at the default reporting and why it’s necessary to set up virtual appliances.

Read the rest of the article here:

Install OpenDNS Umbrella Virtual Appliances on Hyper-V 2012 R2

Set up Ubuntu as a domain controller with SAMBA on VirtualBox

If you want to run a domain controller on your network but don’t have access to a Windows Server license, you can use SAMBA, the free open-source software, and VirtualBox, the free virtualization software. We’ll describe the procedure for setting up a virtual server using VirtualBox and iPXE and move on to setting up your domain controller with SAMBA.

Read my full article here:

Set up Ubuntu as a domain controller with SAMBA on VirtualBox

Clone a Ubuntu server in Hyper-V 2012 R2

Ubuntu runs on Hyper-V perfectly fine, so you may want to run many Ubuntu Virtual Machines (VMs) on Hyper-V Server 2012. R2 This article will show you how to clone or duplicate a single Ubuntu server on Hyper-V with different network interfaces and host names. Cloning Linux servers on Hyper-V is easy and quick when you have the right knowledge and tools.

Read my full article here:

Clone a Ubuntu server in Hyper-V 2012 R2

powershell – Find all computers in a domain or OU running a service

Sometimes you need to find all the computers on a domain that are running a certain particular service. By using Active Directory, supplying your canonical domain name, and define an output file, you can easily create a list of computers running a service.

First, start PowerShell as administrator, and import active-directory powershell components with the following command:

Import-Module ActiveDirectory

Then, open PowerShell ISE and copy in the following into a new .ps1 script:

$ou = "OU=Computers,OU=finance,DC=east,DC=contoso,DC=com"

$servers = Get-ADComputer -Filter * -SearchBase $ou | select-object 
-expandproperty name

Foreach ($server in $servers){
$Data = Get-Service -ServiceName *SAVService* -ComputerName $server | 
select machinename,name | sort machinename | format-table -AutoSize 

Write($Data) | Out-File .\machinesrunningSAVService.txt -Append

Run the script, and your output file will look similar to the following:

MachineName Name      
----------- ----      
hostname1   SAVService

MachineName Name      
----------- ----      
hostname2   SAVService

MachineName Name      
----------- ----      
hostname3   SAVService



How to enable RDP remotely with psexec pstools

How to enable RDP remotely with psexec pstools

If a computer is on your network, but RDP is not enabled, you can create a group policy to enable it and then restart the computer. Or instead, you can use psexec to remotely enable RDP.

Below are a couple one-line scripts to enable RDP on a remote computer from a different computer on the same domain. Keep in mind you need to be an administrator and you will only enable RDP for yourself, not an entire security group.

  1. Download the pstools to your computer from here and unzip them into a folder named pstools at the root of your c: drive.
  2. Open the command prompt as administrator.
  3. Change directory into c:\pstools then run the command:
psexec \\ reg add "hklm\system\currentcontrolset\control\terminal server" /f /v fDenyTSConnections /t REG_DWORD /d 0

4. Run another command to open the required ports in the firewall on the remote machine

psexec \\ netsh firewall set service remoteadmin enable

5. RDP into the remote machine with mstsc.exe successfully!


Powershell – remotely copy multiple files to a list of computers

How to copy multiple files to a list of computers

PowerShell – copy a list of files to a list of multiple computers

Here is a simple PowerShell script I found (linked below) that can easily copy a list of files to a list of computers. If you want to copy more than one file to a lot of computers on your network, this simple script should work ok. It’s better to use a network share and use a UNC path to denote where the file source and destinations.

$a = Get-Content "C:\computerlist.txt" 

foreach ($i in $a) 

{$files= get-content "C:\fileslist.txt"
foreach ($file in $files)
{Copy-Item $file -Destination \\$i\C$\admin\ -force}

Here is a sample of what the computerlist.txt will look like:

And here is a sample of what the fileslist.txt will look like: