Skip to content

Lab 15

Lab 2: Configuring Nagios on Linux Server and Adding Windows Client

1. Setup Windows Client VM

  1. Download Windows Server 2019/2022 Evaluation ISO (from Microsoft).
  2. In VirtualBox → New → Name: WindowsClient → Type: Windows (64-bit).
  3. Assign: 4096 MB RAM, 40 GB disk.
  4. Install Windows → create admin account student.
  5. Enable Remote Desktop for convenience.

2. Install NSClient++

  1. Download from NSClient++ website.

  2. Install with options:

    • Enable NRPE Server.
    • Enable CheckHelpers.

  3. Edit config file:

    • Allow Nagios server IP under allowed hosts.
    • Enable NRPE.

3. Verify NRPE

  • From Nagios server:
/usr/lib/nagios/plugins/check_nrpe -H <windows-client-ip>

4. Add Windows Client to Nagios

sudo nano /etc/nagios4/conf.d/windowsclient.cfg

Example config:

define host {
    use             windows-server
    host_name       windows-client
    address         <windows-client-ip>
    check_period    24x7
    max_check_attempts  5
    notification_interval 30
    notification_period   24x7
}

Restart Nagios and check web UI.

1. Launch Windows Server EC2

  1. AWS Console → EC2 → Launch Instance.
  2. AMI: Microsoft Windows Server 2019 Base.
  3. Instance type: t2.micro (not free tier, may incur cost).
  4. Security Group: Allow RDP (3389) from your IP, and allow Nagios server IP on NRPE port.
  5. Download password → Decrypt with .pem key → RDP into server.

2. Install NSClient++

(Same as VirtualBox instructions).

3. Configure Nagios Server

(Same host config as above).

✅ Check Windows client appears in Nagios web UI.