Hi all,
I have a Synology DDNS, I can access Home Assistant using http://*****.synology.me:8123
Is it possible to set up my Hubitat in a similar way?
Thanks in advance.
Sandyged
In what way? As a container or VM on Synology? If so, no; the hub software can only run on the phyiscal hub device.
No, but you could set up a VPN server on your NAS in a docker, or use something like Tailscale to achieve remote access. Depending on your router, it may also already have that capability. You would have to check your manual for how to set that up though.
I use wireguard to access my Home assistant, my NAS, and my hubitat while away. It is built in to my router (Firewalla) and has been seemless for years.
If you want to securely administer all your Hubitat Elevation hubs with an optional monthly subscription there is Remote Admin. Easy remote administration enables you to set rules, manage devices, and adjust settings while away from home.
If you want to control devices from a dashboard, they do have cloud links.
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Yes, you could do that, but I strongly recommend that you don't, due to the risk that it would create.
If all you want is the ability to just turn on lights, and unlock doors, then you can already do this via remote dashboards.
You really only need full access to the hub if you are creating new rules, or troubleshooting problems.
Since you already have a Synology NAS, you can install the VPN package, and have a VPN up and running in 5 minutes or less.
The only remaining step would be to set up port forwarding in your router so that the incoming VPN requests are directed to the address of the Synology NAS. And of course you would need to install the VPN client application on your phone or remote PC.
Not only will this give you access to your Hubitat hub but you will now be able to access any other device on your home network. It can also provides security for any connections you make when you are accessing sites from public Wi-Fi networks.
Edit: From the other answers, I guess you want to tunnel into the hub from the internet using your NAS, I probably misread your post first time through. 
A good rule for me is to read twice, reply once. 
Looks like this has come up before in a Customize Hub Hostname post, and this is the best solution...
I agree with @michaelahess in that thread,
The few times I have needed access to the hub on a device without a bookmark, I've had to type the IP once, and then make a bookmark. Such a simple thing though, why was that feature never added?
If you want remote access to your Hubitat hub, then the subscription is a low cost and simple approach.
If you want to access everything normally restricted to your LAN from a remote connection, then VPN is the way to go, but they're not all equal. Years ago I struggled though the instructions and got one working on my old Synology. It worked but was complicated to setup, dog slow, and I wasn't confident I could maintain its security on my own. I could probably visit that again with my new Synology and get it working much better, but then I would still need to go through the hastle of setup and maintaining its security.
Recently I needed to upgrade our mesh routers and I didn't want to pay a subscription or spend a fortune on the system. I found a 3 unit Asus Bt-8 Amazon warehouse deal for $521 CAD ($382 USD). Not a perfect UX, but nothing is. I still need parental controls for a while longer, and this has it for free, plus it's easy to use from the app. The Asus BT line have serveral other bonuses that I didn't expect, but have made it so worth the upgrade. One is Instant Guard. This is their free, and dead simple VPN server. One click in the Instant Guard app and I'm into my home with secure access to everything.
With the VPN connection, music from my Synology streaming to my phone anywhere works so much better than before. It's a bit slow to establish the connection, but once it does configuring the smart home gear and browsing/streaming my music is as fast as being on my LAN. Our ISP upload speed is modest at just 40Mbps, so it's not like I needed a fiber line or anything expensive added above and beyond to get good results.
[EDIT] A recent Asus firmware update has made establishing a connection via Instant Guard very fast. 
Thanks for the reply.
I’ve read about reverse proxy on Synology, I might give that a go.
Thanks
Here is a hubitat device that checks for an ip change and when it sees it calls a web based updater url.. right now hard coded for dynu dns service but could easily be changed for others.
I use this in my condos on the hubitats that have dynamic ips.. (spectrum)
or it mayt transparently work with other services as i have paramaterized the following variables
here is the url call
Map params = [
uri: "${base}hostname=${host}&myip=${newIP}&username=${uname}&pwd=${pwd}",
contentType: "text/plain",
timeout: 20
]
