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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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ISP put me behind NAT (lemmy.world)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

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I'm connected via a 4G modem. Got this setup about 3 years ago. In the beginning it was enough to look for the public IP (what's my IP). The modem showed some sort of private ip in the ui. I'm running stuff at home (Homeassistant, Gitea,) and bought a domain and pointed it to my home IP via Cloudflare. After some time I've noticed my modem shows the public IP also internally. For about 2 years now it ran flawlessly, the IP changed from time to time, but not really more than once in several weeks. For about a week all stopped working and the modem shows IP 100.xxxx and outside 85.something I guess I'm behind NAT now. Normal port forwarding on the modem is useless now. Is it possible to open the ports via UPNP? I've tried via miniupnp from my Ubuntu server, but it just throws an error.

upnpc -a ifconfig enp1s0| grep "inet addr" | cut -d : -f 2 | cut -d " " -f 1 22 22 TCP

Can I use this to somehow open the ports via UPNP on my modem and bypass the blocking? I can't even OpenVPN to my modem anymore.

EDIT: i also run AdguardHome, that I use as Private DNS on my Android phone

UPDATE: everything except Adguard Home used as Private DND on my Android works! I've used this: https://github.com/mochman/Bypass_CGNAT/wiki/Oracle-Cloud-(Automatic-Installer-Script) - free Oracle VPS + automated well described script. Even HTTPS works fine!

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[–] [email protected] 51 points 9 months ago* (last edited 9 months ago) (4 children)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters	More Letters
CGNAT	Carrier-Grade NAT
DNS	Domain Name Service/System
Git	Popular version control system, primarily for code
HTTP	Hypertext Transfer Protocol, the Web
IP	Internet Protocol
NAT	Network Address Translation
VPN	Virtual Private Network
VPS	Virtual Private Server (opposed to shared hosting)
nginx	Popular HTTP server

[Thread #274 for this sub, first seen 11th Nov 2023, 18:30] [FAQ] [Full list] [Contact] [Source code]

[–] [email protected] 14 points 9 months ago

Neat bot!

[–] [email protected] 7 points 9 months ago

Yo this bot is super helpful

[–] [email protected] 4 points 9 months ago

Oh I love this idea for a bot! Well done!

[–] [email protected] 3 points 9 months ago

Good bot