Thank you for testing.  That's very kind of you.   I did check the firewall on the laptop, in fact I disabled it.   So it does look like an upstream issue as the ping isn't working either.  I'll accept your solution.     Thanks again for your help. ... View more

I had the same problem with the green screen but as you say it works fine by IP.  The iPhone app also gets stuck when selecting a device but it works when entering the IP.  So I have the port forwarding rules configured but I'm unable to access the ports externally.  So the problem is either with my GX20 configuration which is unlikely as I've worked in IT for 25 years and have a decent amount of firewall/routing experience, or it's a problem with the office firewall configuration (or some other upstream issue).  Although I've never used Meraki before, it's a simple port forwarding configuration.   I can't access the laptop externally through the port forwarding and I can't ping the public IP configured on the WAN interface of the GX20 which makes me believe it's an upstream issue.  I'm in discussion with the managed office IT team about it, but after seeing someone else post that they're unable to ping their WAN interface IP I just wanted to check that I should be able to.  ie.. check that the GX20 should respond to pings as their is no specific option to allow ICMP on the GX20. ... View more

Hi, thanks for replying.   Yes I know it's unusual, but there is no NAT configured on the office firewall.  They're somehow passing the public IP through to me which is why I've put the GX20 there.  I will put my server behind the GX20 eventually but I've put an old laptop behind it for now just to test the inbound access as I need to minimize the downtime when I move the server.  The GX20 is showing up in the Meraki cloud and the laptop behind it is showing up as online.  All outbound access works fine.  However, the port forwarding isn't working on the GX20.  Pinging the external IP also doesn't work which makes me think it's a problem with the office firewall configuration despite their IT people saying nothing is blocked so everything should be allowed to and from the public IP.   I understand that not being able to ping can be a good thing but it's a good test to see if the office routing through to my GX20 is working.  The ping isn't working but I don't know if that's a configuring issue with the office firewall or if the GX20 just isn't responding to pings on the WAN interface.  I saw a post somewhere where someone else said their GX20 wasn't responding to pings on the WAN interface, so I wanted to check in case that was the default for all GX20's.   Thanks, Daryl ... View more