If you are just looking to repurpose an old device for around the house use and it won’t ever be leaving your home network, then the simplest method is to set a static IP address on the device and leave the default gateway empty. That will prevent it from reaching anything other than the local subnet.

If you have multiple subnets that the device needs to access you will need a proper firewall. Make sure that the device has a DHCP reservation or a static IP and then block outgoing traffic to the WAN from that IP while still allowing traffic to your local subnets.

If it is a phone who knows what that modem might be doing if there isn’t a hardware switch for it. You can’t expect much privacy when that modem is active. But like the other poster mentiond a private DNS server that only has records from your local services would at least prevent apps from reaching out as long as they aren’t smart enough to fall back to an IP address if DNS fails.

A VPN for your phone with firewall rules on your router that prevent your VPN clients from reaching the WAN would hopefully prevent any sort of fallback like that.

If you are accessing your files through dolphin on your Linux device this change has no effect on you. In that case Synology is just sharing files and it doesn’t know or care what kind of files they are.

This change is mostly for people who were using the Synology videos app to stream videos. I assume Plex is much more common on Synology and I don’t believe anything changed with Plex’s h265 support.

If you were using the built in Synology videos app and have objections to Plex give Jellyfin a try. It should handle h265 and doesn’t require a purchase like Plex does to unlock features like mobile apps.

Linux isn’t dropping any codecs and should be able to handle almost any media you throw at it. Codec support depends on what app you are using, and most Linux apps use ffmpeg to do that decoding. As far as I know Debian hasn’t dropped support for h265, but even if they did you could always compile your own ffmpeg libraries with it re-enabled.

How can I most easily search my NAS for files needing the removed codecs

The mediainfo command is one of the easiest ways to do this on the command line. It can tell you what video/audio codecs are used in a file.

With Linux and Synology DSM both dropping codecs, I am considering just taking the storage hit to convert to h.264 or another format. What would you recommend?

To answer this you need to know the least common denominator of supported codecs on everything you want to play back on. If you are only worried about playing this back on your Linux machine with your 1080s then you fully support h265 already and you should not convert anything. Any conversion between codecs is lossy so it is best to leave them as they are or else you will lose quality.

If you have other hardware that can’t support h265, h264 is probably the next best. Almost any hardware in the last 15 years should easily handle h264.

When it comes to thumbnails for a remote filesystem like this are they generated and stored on my PC or will the PC save them to the folder on the NAS where other programs could use them.

Yes they are generated locally, and Dolphin stores them in ~/.cache/thumbnails on your local system.

It also doesn’t say that the line on the bottom is straight, so we have no idea if that middle vertex adds up to 180 degrees. I would say it is unsolvable.

Gerrymandered districts are more in danger not less. Gerrymandering is about spreading out areas which are easy wins, and instead spreading those votes over multiple districts.

You gain more seats, but you make every race closer.

But those aren’t mutually exclusive things. Voting for the Dems doesn’t prevent you from doing those other things in the meantime.

If you only have two real choices that will affect the outcome and one of them is better than the other, voting for neither of them just makes things harder for those that would have made it slightly better. More compromises have to be made and that means the situation can’t improve.

I see constant posts about how Trump splitting their base is going to mean the end of the Republican party but that seems very short sighted. It is a simple matter of natural selection, and in a two party system only two parties will ever exist. It also inherently gravitates to very close races between those parties. Any split of the Republican party might cause a term or two of chaos, but it is just a matter of time before something fills the vacuum and balance is restored.

Each party would prefer to move further towards their end of the spectrum, but they are forced to move their values (or choose more centrist candidates) until they have enough of a majority to win.

Gerrymandering, the electoral college, what’s left of the judicial branch, apathetic voters, parasitic third parties, and wedge issues have allowed the Republicans to shift further right while maintaining their power. The only possible response to that from the Dems is to also shift right as well. If they didn’t the Republicans would just end up with trifectas or super majorities.

Trump was also able to shift racist/authoritarian/nationalist policies much further right by shifting his fiscal policies further left than what Republicans normally would do. His whole campaign was based on deficit spending (tax cuts without any real cost cutting, stimulus COVID spending, etc), public works (multi billion dollar worthless walls), and his focus on blue collar workers (not directly supporting unions but he pushed anti China + US manufacturing boosts).

Every vote for a third party is one less vote that the Republicans need to gain, which is a little more right that they can slide and maintain power, and since natural selection links the two parties it is also a little further right that the Democrats have to slide to maintain their power as well.

If you want to shift things left voting third-party won’t do it. Third parties have no power to make changes and never will in our current system.

Voting for the only party that has a chance of winning and is willing to make voting reforms to improve that system is the only hope of shifting the parties to the left where the actual political center of the country lies.

Voting for anyone else is illogical and won’t prevent this genocide. Protests, and organizations can maybe help in the short term to push the Democrats to change course but it also disenfranchises more voters to not show up, and pushes more to vote for third parties… And so the snowball tumbles down the hill to the right gaining momentum leaving us with frankly no good choice.