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I recently bought a Synology DS412+ and am trying to set it up for remote access. Currently I'm trying to be able to access the DSM tool.

My home setup is as follows:

  • The internet connects to a Sagem Webr@cer (VDSL modem + router). This router (192.168.1.1) operates in the 192.168.1.x range.
  • Via cable, a second router Linksys E1000 is connected. This router (192.168.2.2) operates in the 192.168.2.x range.
  • The NAS is linked by cable (twice) to this router, and has the fixed IP addresses 192.168.2.18 and 192.168.2.19. I'm trying to set up the remote connection via the 192.168.2.19 address.

I registered a xxxxx.synology.me DDNS address, and it correctly resolves to my home IP address. I forced a refresh of my IP, and the DDNS was changed within minutes. When I enter either the IP or DDNS address in my browser bar, the page does not load. However, when I open this URL from within my home network, I get my top router (192.168.1.1) configuration page. If I open that page up to remote access, I also get this config page when accessing from remote (which is a bad idea, but it proves that the DDNS is not at fault here).

So I assume there is an issue with my port forwarding on the top router. However, I am unsure how to correctly set up port forwarding between different routers. The ports I'm trying to forward are 5000, 5001 and 80.

Am I supposed to forward the ports to the second router (which then subsequently forwards the port to the NAS), or can I configure the top router to directly forward the port to the NAS? I already tried both and neither worked, but maybe I'm missing something.

I tried setting it up via DSM and manually, but neither method worked for me. I think I'm missing some key piece of knowledge about a multi-router setup to correctly set this up.

Can anyone shed some light on the situation? If something is unclear please feel free to ask.

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  • The answer to your question depends on how the two routers are connected, which is not clear to me at the moment. Is there a cable between the two? If so, which side of eac router is connected, the public or the private one? Also, can you pls explain why you need 2 routers?
    – MariusMatutiae
    Commented Sep 26, 2013 at 14:16
  • They're connected by cable (it is mentioned, but maybe not obvious :)) What do you mean by public/private? I used to have only the linksys but I switched ISP and needed a VDSL modem, thus I got the Sagem. However, the Sagem makes a mockery of my internal network, so the Linksys is still in use because I needed a switch, and because it manages my internal network better than the Sagem can. Also, it has better wireless antennae than the Sagem.
    – Flater
    Commented Sep 26, 2013 at 14:33
  • Important to note: all machines are connected to the linksys router (some wireless, some by cable). The Sagem is only used for the VDSL communication. But the network itself is OK, I can stream between machines in many different setups. This is the first time I'm tryiong to get a connection past the Sagem router.
    – Flater
    Commented Sep 26, 2013 at 14:41
  • I should probably mention that I purchased the same NAS device Synology DS412+ and had nothing but issues with the unit. The software could find the NAS sometimes, but other times it could not.. I think I may have had a defective unit, but regardless the whole setup process was far too complicated compared to any other NAS device i've deployed (20 to 30 devices deployed over the years). I just want a simple web interface I can log into without some stupid piece of proprietary software in between.
    – Richie086
    Commented Sep 26, 2013 at 15:57
  • As far as in-browser interfaces go, I haven't seen anything smoother than DSM. It just runs seamlessly. I haven't tried it remotely, though I suspect that any slowness that occurs only when remote has more to do with your ISP and the connection quality instead of the NAS itself.
    – Flater
    Commented Sep 27, 2013 at 7:38

1 Answer 1

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Well, I managed to fix it. As suggested, I gutted my second router and disabled its DHCP server, so it functions purely as a switch.

That was not the solution, however. Apparently my ISP has ports 5000 and 5001 blocked. I Set my port forwarding from port 80 externally to port 5000 internally and now it works.

I'll check to see if I can use another port so it doesn't conflict with other services on the NAS, but it's good to see it working, now I know where to look.

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