Can't access Emby remotely on Synology DS224+ — QuickConnect works but Emby won't (DSM 7.2.2 / R8000)

[gabrielbrondon 1]

Hi everyone! Before anything, I just want to mention that I’m from Brazil, so English is not my first language — sorry in advance for any mistakes. I also have only a medium/average level of knowledge when it comes to networking, so it’s possible I misunderstood or misconfigured something along the way.

I bought Emby Premiere on Black Friday and I’m having trouble accessing my Emby server from outside my home network. I used to be able to connect remotely, but something changed and I can’t get it to work anymore.

Setup and what works

• Emby installed on a Synology DS224+ (DSM 7.2.2-72806 Update 5).

• NAS is wired to my router and modem.

• Router: Netgear Nighthawk X6 R8000 (firmware v1.0.4.18_10.1.49).

• Modem: Nokia G-240W-C.

• I can access the NAS remotely using Synology QuickConnect without problems — remote access to the NAS itself works fine.

• Inside Emby I’ve enabled remote access settings and attempted port forwarding on both the router and the modem (tried to re-create how it was configured before), but I still can’t reach Emby from outside the LAN.

What I’ve tried so far

• Enabled remote access inside Emby.

• Configured port forward on router and modem for the ports used by Emby.

• Verified NAS is on a fixed/local IP and Emby is bound to that IP.

• Confirmed QuickConnect remote access to the NAS is working, so the NAS is reachable.

What I’m asking for
Could someone help me review the settings that might block remote access to Emby specifically? A step-by-step checklist as if I were configuring Emby for remote access for the first time would be ideal — I want to understand what could be preventing Emby (not the NAS) from being reached remotely.

Useful info / checks I can provide if needed

• Emby ports I’m using (defaults: 8096 HTTP and 8920 HTTPS) and the internal NAS IP.

• Router/modem NAT rules and screenshots of my port forward rules.

• whether UPnP is enabled on the router.

• Emby server logs (I can paste redacted sections).

• Result of an external port check (if someone suggests a tool I’ll run it and post results).

Anything you recommend I check right away?
I suspect issues like double-NAT (modem + router), ISP CGNAT, router firewall or NAT loopback, wrong port mapping, or DSM firewall rules might be the culprit. I appreciate step-by-step troubleshooting or specific settings to verify — thanks in advance!

Just one more detail: all firewalls involved are currently disabled — the Synology DSM firewall, the Netgear R8000 router firewall, and the Nokia G-240W-C modem firewall. So firewall blocking should not be the cause in this case.

Edited December 3, 2025 by gabrielbrondon

[Luke 42077]

Hi, how exactly are you trying to connect using Emby apps from outside your network?

[gabrielbrondon 1]

I'm using the Emby Connect feature within the app, my account is already configured

[Luke 42077]

Hi, have you tried a direct server connection instead by manually entering your server address?

 Does your server dashboard display the correct local and remote addresses that should be used?

[gabrielbrondon 1]

On 12/4/2025 at 10:39 PM, Luke said:

Hi, have you tried a direct server connection instead by manually entering your server address?

 Does your server dashboard display the correct local and remote addresses that should be used?

Sadly yes in both cases. Already tried by manualy put The external IP adress, but still doesnt connect giving the 'can't find server' error 

 

The dashboard show The correct IP as The same as The NAS machine

[Luke 42077]

@gabrielbrondonhave you checked to see if your ISP is using a CGNat?

[gabrielbrondon 1]

On 12/8/2025 at 3:50 AM, Luke said:

@gabrielbrondonhave you checked to see if your ISP is using a CGNat?

I'm afraid that that is the issue, I tried using a VPN and it access fine. 

Now is try to contact the ISP and reclaim a exclusive IP again  Thanks for the help.

I have a question, in this case, if I can't get them to resolve the CGNat problem, the only way to access remotely is via VPN?

[Luke 42077]

OK please keep us posted. And yes, a VPN is the solution for a CGNat if you can't get a reserved IP.

[gabrielbrondon 1]

It really was an ISP problem, I change my ISP and came back working normally.