The Zabbix Agent listens on port 10050. To monitor the Zabbix server itslelf, navigate to Monitoring > Hosts within Zabbix, and modify the "Zabbix server" host by adding the DNS name "zabbix_zabbix-server_1" and toggling the "Connect to DNS" option.
The Zabbix Agent listens on port 10050. To monitor the Zabbix server itself, navigate to Monitoring > Hosts within Zabbix, and modify the "Zabbix server" host by adding the DNS name "zabbix_zabbix-agent_1" and toggling the "Connect to DNS" option.