Hello, in the dmz server deploy the web adaptors for portal and server, this way you do not need to open any ports, the only ports that need to be open for inbound/outbound traffic is the https 443 port for the IIS webserver, you can even close http 80 port. I hope this helps.
| Marcelo Marques | Principal Product Engineer | Esri |
| Cloud & Database Administrator | OCP - Oracle Certified Professional |
I work with Enterprise Geodatabases since 1997.
“ I do not fear computers. I fear the lack of them." Isaac Isimov