this post was submitted on 25 Apr 2026
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Docker Desktop on Linux? (piefed.zip)
submitted 2 months ago by Hezaethos@piefed.zip to c/selfhosted@lemmy.world
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After trying out Cosmos Cloud (and it not working for the clients), I'm back at square one again. I was going to install Docker Desktop, but I see it warns that it runs on a VM. Will this be a problem when trying to remote connect to certain services, like Mealie or Jellyfin?

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[–] foggy@lemmy.world 4 points 2 months ago* (last edited 2 months ago) (1 children)

If it's a Linux box, everything over 1023 just needs root.

For Debian flavors,

/proc/sys/net/ipv4/ip_local_port_range

At least for those I use. Idk for rhel etc.

I can check my boxes with system ctl:

sysctl net.ipv4.ip_local_port_range

And tested on a VM, this wide s your ephemeral range:

sysctl -w net.ipv4.ip_local_port_range="1024 65535"

Manage persistence in /etc/sysctl.conf

I'll be honest here, I asked Claude for the windows equiv of that. I haven't tested. Proceed with caution:

To check:

netsh int ipv4 show dynamicport tcp

To expand ephemeral range:

netsh int ipv4 set dynamicport tcp start=10000 num=55535

Syntax makes enough sense to me, but I repeat I have not vetted this.

HOWEVER,

all moot. You have 65k ports PER CONNECTION, holmes. Sorry I'm drunk now my tones changes and typos = more :)

So you at 10.0.0.1 connect to Google at 8.8.8.8 and cloudflare at 1.1.1.1, you can use 130k connections between the two. So this isn't as useful as you may think you need it to be (idk what you're doing lol, load balancer?)

If you're churning through tons of short connections, you can "run out" of ports even though you have plenty... they're all just cooling down.

net.ipv4.tcp_tw_reuse=1

lets the kernel grab them sooner.

Claude says Windows would be

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\TcpTimedWaitDelay

That's a registry change. Proceed with extreme caution. Use a VM or throw away machine. I have absolutely not vetted the windows version here and registry edits are inherently dangerous. I usually yell at an AI that tells me to use regedit. Probably don't do this unless the system is backed up and those backups are tested.

Hope this helps your crazy load balancer or whatever :)