My ISP has “upgraded” their hardware and it has put behind CGNAT. I use a Synology NAS as my plex server., What solution can I easily implement to access movies from outside my home?
Ask if they offer a public IPv4 address that supports port forwarding. The address does not need to be static, but it must be unique to your account.
If so, they will likely charge extra for the service.
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Install Tailscale on the NAS, as well as the remote client.
Depending on how you’re accessing Plex when away from home, if it’s a mobile device you can easily use VPN to remote into your home network and then you’ll just use Plex as if you were in your home.
Synology has a VPN server you can use: Set up VPN Server | VPN Server - Synology Knowledge Center
Routers often have VPN servers too and might be easier to manage so you might check there too.
VPN can be very useful for accessing your NAS remotely rather than exposing it to the internet so it’s useful for more than just accessing Plex - depending on your situation.
Some of the people I share my content with are accessing the files through a Roku. I don’t know how they could install that.
Oh, you didn’t mention other people. There still might be a way to do it using Tailscale, but it can be technical on both sides.
Sometimes I use my phone but I also have family members that I share content with that use Roku devices (some of which are technologically stretched just trying to use a Roku) I just don’t know that adjusting router settings, installing VPN’s and third party software will work in my situation if these changes needed to be made at both the server and client end.
From my own experience CGNAT with ISP’s.
Firstly it is often two choices.
- Opt out of CGNAT
- Purchase a Static WAN IP
Opt out is free and has no issue with VPN services I have ever experienced.
Please note: Plex remote does not play friendly with a active VPN unless a split tunnel is correctly configured.
It looks like “opting out” means looking for a new ISP. My choices are a new ISP or paying an additional fee for a public IP.
Sounds like they want your $10 per m
Most ISP’s charge $5 or $10 for a real IP.
No idea why they’re doing it. They still own the whole subnet
There are costs to play this game and real IP is one of them.
You don’t want to know what I pay for monthly service. 
The public IP is only at your end. It effectively bypasses their CG-NAT network.
No installing software. No installing VPNs. The only router configuration changes are on your end, and make it work like before they rolled out CG-NAT.
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