Selfhosted
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.
Rules:
-
Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
-
No spam posting.
-
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
-
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
-
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
-
No trolling.
Resources:
- selfh.st Newsletter and index of selfhosted software and apps
- awesome-selfhosted software
- awesome-sysadmin resources
- Self-Hosted Podcast from Jupiter Broadcasting
Any issues on the community? Report it using the report flag.
Questions? DM the mods!
view the rest of the comments
If you can fool the Internet that traffic coming from the VPS has the source IP of your home machine what stops you from assuming another IP to bypass an IP whitelist?
Also if you expect return communication, that would go to your VPS which has faked the IP of your home machine. That technique would be very powerful to create man in the middle attacks, i.e. intercepting traffic intended for someone else and manipulating it without leaving a trace.
IP, by virtue of how the protocol works, needs to be a unique identifier for a machine. There are techniques, like CGNAT, that allows multiple machines to share an IP, but really it works (in simplified terms) like a proxy and thus breaks the direct connection and limits you to specific ports. It's also added on top of the IP protocol and requires specific things and either way it's the endpoint, in your case the VPS, which will be the presenting IP.
Each time you send a packet over the internet, several routers handle this packet without touching the source and destination IP addresses.
There is nothing stopping him from configuring the VPS in a way that forwards packets from the home server, rewriting the destination IP (and optionally destination port as well) but leaving the source IP intact.
For outgoing packets, the VPS should rewrite the source (homeserver) IP and port and leave the destination intact.
With iptables, this is done with
MASQUERADE
rules.This is pretty much how any NAT, including ones behind home routers, work.
You then configure the homeserver to use the VPS as a gateway over wireguard, which should achieve the desired result.
That's not what I want accomplish. The clients connecting to machine B should not know that their traffic was handled by machine A. I will use DNATs to accomplish my goal. It is possible because tailscale can do exactly that. Thank you for your input though.
Maybe I am wrong we will see soon. 🙃
Well thats just a normal reverse proxy then. In my setup I use Caddy to send traffic through the NetBird managed wireguard tunnel to my home machine that runs Jellyfin but for any outside observer it look like it's my VPS that is serving Jellyfin.
Jes exactly but without being http/https only and without decrypting the traffic on the vps.
That's why the forwarded for header won't work. It's one layer below.