Hi Omada world :)

I have an issue discovered that my clients (wireless tablets) can not connect to a running Docker container (minecraft server) - once they are moved into a separated VLAN.

PROBLEM:
- Minecraft Bedrock Server (marctv/minecraft-bedrock-server:latest) running perfectly on Synology DS923+ Docker (Port 21132 UDP/TCP)
- Wired clients (VLAN1) - can connect
- External via NAT - can connect
- Mobile iPhone/Android in VLAN30 (192.168.30.x) - can not connect via IP Adress and port "Multiplayer connection failed"

DIAGNOSIS:
- Ping NAS-IP (192.168.1.2) from VLAN30 → working
- Other Docker service Port 8123 (TCP) from VLAN30 → working

- If I connect instead from IP Adress with the FQDN and open the NAT in Omada its working
- therefore my conclusion is: UDP 21132 specifically blocked!

OMADA SETUP:
- ER605 Gateway, Omada Controller v6, EAP225/EAP653
- VLAN1: NAS/Server (192.168.1.2:21132)
- VLAN30: Mobile WLAN (30-Home WLAN)

I then tried to create Gateway ACLs.

one in each direction - but its also not working

I also added an mDNS config

as for the printer, becuase this solved my issue printing from iOS devices to my printer.

But as of Now, the client just receives this error after trying to connect.

Thanks for any help/advice/ideas on this. 

Best regards,

Mark