Hi, 

weird think. We want to enable teachers from our schools to submit requests to our Servicedesk. So we setup servicedesk as subdomain:8080 within our DMZ. The Frontend is accessible and login possible for teachers. They can submit request etc. Seems to work well.

subdomain.domain.tld

When we configure the setting from backend

subdomain.domain.tld:8080,

technician login (SD-admin) some things do not work. E.g.

changing/ modify requests as technician

add technician

modify Userdata

When we do from Ip-address:8080 from internal Lan everything is working??

Is this a security  feature? 

 subdomain.domain.tld:8080 > SNAT > to SDP in DMZ 

open only port 8080