GPS DEVICE port

Hi, I was wondering when setting up a server for tracccar, in the Google VM network ports, should I use The Device port to
INGRESS or EGRESS, since I did the default traccar port:8082 to INGRESS.
For now I have done my DEVICE PORT to INGRESS. is this Ok.

If it works you can leave it this way. But normally you just open a firewall port both ways to have acces to port 8082 and your device ports. Logicly it should be both ways communication so that the server can receive and also send (reply) data on those ports.

Thanks.