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Adding Windows Host into Zabbix (Active Check Mode)

1. Download Zabbix Agent

Make sure you are using same version as your Zabbix server.

I am using Zabbix 4.0 LTS, so here is my download link for Windows Agent:

2. Install Zabbix Agent

By default, it will install your agent as passive mode

2.1 Verify ports

For passive mode:
C:\Users\John>netstat -na | find "100"
  TCP              LISTENING
  TCP    [::]:10050             [::]:0                 LISTENING

For both passive and active mode:
C:\Users\John>netstat -na | find "100"
  TCP              LISTENING
  TCP    [::]:10050             [::]:0                 LISTENING

For Avtive mode only:
C:\Users\John>netstat -na | find "100"

2.2 Enable Active mode:

Wordpad edit C:\Program Files\Zabbix Agent\zabbix_agentd.conf. Find the section relating to ServerActive:

### Option: ServerActive
# List of comma delimited IP:port (or DNS name:port) pairs of Zabbix servers and Zabbix proxies for active checks.
# If port is not specified, default port is used.
# IPv6 addresses must be enclosed in square brackets if port for that host is specified.
# If port is not specified, square brackets for IPv6 addresses are optional.
# If this parameter is not specified, active checks are disabled.
# Example: ServerActive=,zabbix.domain,[::1]:30051,::1,[12fc::1]
# Mandatory: no
# Default:
# ServerActive=


2.3. Disable Passive check:
Change StartAgents value to 0. 
### Option: StartAgents
# Number of pre-forked instances of zabbix_agentd that process passive checks.
# If set to 0, disables passive checks and the agent will not listen on any TCP port.
# Mandatory: no
# Range: 0-100
# Default:
# StartAgents=3


Remove following default passive related Server= settings.

### Option: Server
# List of comma delimited IP addresses, optionally in CIDR notation, or DNS names of Zabbix servers and Zabbix proxies.
# Incoming connections will be accepted only from the hosts listed here.
# If IPv6 support is enabled then '', '::', '::ffff:' are treated equally and '::/0' will allow any IPv4 or IPv6 address.
# '' can be used to allow any IPv4 address.
# Example: Server=,,::1,2001:db8::/32,zabbix.domain
# Mandatory: yes, if StartAgents is not explicitly set to 0
# Default:
# Server=

### Option: ListenPort
# Agent will listen on this port for connections from the server.
# Mandatory: no
# Range: 1024-32767
# Default:
# ListenPort=10050

2.4 Make New Templates with 'Zabbix Agent (active)' 

Before I start changing hosts from passive to active checks, I needed to
make three new templates-objects. For each of
'Template App Zabbix Agent', 'Template OS Linux' and
'Template App MySQL', do:

- Go to Configuration : Templates, select template $name
- scroll down, click 'Full Clone'. Change the clone's name to "$name
Active" and click 'Add' at the bottom.
- In Configuration : Templates, Find the new "$name Active" template,
click on the 'Items' item on its row.
- Click on the checkbox in the upper-left to select all rows, scroll
down to the drop-down and select 'Mass Update' and click 'Go'
- Click the checkbox for 'Type' and select 'Zabbix Agent (active)' in
the dropdown that appears. Scroll down and click the 'Update' button.

Zabbix-Configuration-Template-Create/Clone a new Windows Template


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