Zabbix Dashboard and Graph show only on same subnet with zabbix server

[toyotaro83]

Hi,

I have zabbix 4.4.5 server on Ubuntu 18 and many vm,appliance,and network device to monitor. I dont know if this strange or not, but when im in different subnet with zabbix server(192.168.1.0/24) my dashboard/graph dont show anything, but i can see host last data. If i in the same subnet with zabbix , i can see the dashboard and graph. Is there some config i miss, i already check the network firewall and i dont see any logs.

Thanks

--EDit, i know the reason

[Hamardaban]

Perhaps this phenomenon is related to the web server settings, in particular with the content security policy. look in the browser error console - there may be messages about blocking certain content.

[tim.mooney]

--EDit, i know the reason

It might be helpful to someone else in the future if you follow up with information on what the problem was and what you did to fix it.

[toyotaro83]

Hi,

Mr Hamardaban is right, i only look on the network firewall log, which strangely i cant find any log related. Then i using browser developer tool like inspect tool to find which element got 4xx or 5xx. And them i see a jsLoader file cant get loaded said about incorect text/html nosniff, first i think is apache seting or folder setting, i edit apache and zabbix php file its not work, this is where i blank.
And then i look again at firewall rule, and i see a waf rule and i disable it. And it works, i can see the dashboard now.
Im pretty sure i already check all firewall log which i cant find aany related log to zabbix server.

Thanks