Zabbix frontend issue via fortigate SSL VPN Web portal

[Raimond56]

Hello,

Zabbix version: 6.2.4

I am having issue with zabbix frontend when accessed via Fortigate SSL VPN web portal.
I am wondering if there is possible to do something on zabbix frontend side to fix this. Fortigate doesn't seems to offer many options.

Issue is following, when accessing Problems,Latest data, Hosts under "Monitoring" tab it generates double SSL VPN portal link in front of zabbix link and then it says file not found because of wrong link.
This issue doesn't happen on other tabs. For example "Configuration" tab works fine.

Here is pictures what I mean. When accessing configuration -> hosts for example the link would look like this. ( First part is SSL VPN web portal (domain.local) address and then second part is zabbix address (domain.remote).


But when clicking for example "Problems" under "Monitoring" it will double the webportal link and any next click would result in file not found - since the link is invalid.


And then when I click on "Problems" again i get this because of invalid link.


Maybe there can be something done on frontend config ? I do not have knowledge of php.
Let me know if anything else could help.

Best regards,
Raimond

[Raimond56]

Additonal information.
I am running frontend with nginx.
And I did some tests I discovered that this does not happen with normal HTTP. But does happen with https.