Minecraft Education | Unable to join multiplayer game

posix

@uglybrian no it’s windows 10 dell inspiron laptop it uses private subnet 192.168.40.x they all do. Wi-Fi is provided by unifi AP.

posix

@bigchimpin hey I remember seeing this bug!
Lol it’s been hell last two days. Was considering shelling $799 to netgate support....

DaddyGo

@posix said in Minecraft Education | Unable to join multiplayer game:

no mention of UPNP.

as the colleague @bigchimpin mentions, we have already discussed it here:
(wait - wait and end up waiting)

https://forum.netgate.com/topic/153514/nat-issues-when-playing-games-on-two-computers/12?_=1599056109642

BTW:
so I asked about UPnP

posix

@daddygo

Ok thanks, so another update I was researching on UPnP and forgot to add the following configuration. (I did this for another gaming PC to get from strict NAT to moderate NAT and I did see better behavior).

Services -> UPnP & NAT-PMP (check)
Enable UPnP & NAT-PMP (check)
UPnP Port Mapping Allow UPnP Port Mapping (check)
External Interface WAN
Interface SPECIFIC VLAN interface

Then under


UPnP Access Control Lists
allow 53-65535 192.168.40.99 53-65535

Unfortunately still not able to join games. Looking at the packet capture I took using (Full) Level detail. I saw many retransmits in TCP. They would come in batches in the flow then everything would return to normal. I googled upnp wire shark capture and it seems all are UDP port 1900 and SSDP.

@bigchimpin @DaddyGo I want to thoroughly exhaust my options and go through the steps before calling it.I dont doubt your analysis. Mainly documentation. Perhaps might help others get a workaround in place as I did.

DaddyGo

@posix said in Minecraft Education | Unable to join multiplayer game:

I want to thoroughly exhaust my options

This will not be resolved today, maybe tomorrow

posix

UPDATE:

My child confirmed today that they are able to join other players world.

I can confirm no change in configuration other the last update I provided on
making changes Services UPnP & NAT-PMP.

Will monitor some more.

DaddyGo

@posix said in Minecraft Education | Unable to join multiplayer game:

making changes Services UPnP & NAT-PMP.

Which I would like to add, with things like UPnP & NAT-PMP be careful on your firewall.
Always run on a separate interface
(I see you have a VLAN for this purpose)

tyluerdisy

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dmp1ce

Did anyone try just port forwarding the recommended ports on the https://portforward.com/minecraft/ page? I'm going to give that a try because I don't really want to turn UPnP on.

Some additional ports to forward would be 19133 and 25565 which I didn't see mentioned in this thread.

dmp1ce

Nevermind, I guess 19133 is for IPv6 and 25565 is for Java Edition. So, opening 19132 should do it for my setup, but I cannot join only host. Minecraft Education gets the wrong IP though.

kasatka

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GeorgiaClark

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GeorgiaClark

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