Can i make my own vpn without access to the router?

000000

I dont have the configuration pw to my home router.
Can i still make a vpn server on a raspberry pie?
All tutorials say i need port forwarting. Thats not possible. Suggestions?

PaulDavis

000000 can't you reset the router to original, usually with the help of a pin, and then use the standard Admin, Admin?

000000

PaulDavis yes i thought of this too. Problem is if i f. this up the other persons in my home will be very angry. And nobody can find the papers from the isp. Only solution would be to call the isp but it's not on my name so the guy with the contract must call there and he is a normal sceptical person and will probably just say some like "what do you want the internet is functioning".
The other solution is to find a way without the need to port forward.
Or i use a sim router but i don't think the isp of that simcard would give me the needet ip address for this and i don't know if it's even technically possible.
Suggestions?
Edit: is it even possable to make a home vpn which than routs the traffic over tor? So it goes phone-vpn-tor-internet?

Probably9857

Tor services do not require port forwarding. So, maybe...

Run Tor service on Raspberry Pi at home, that is basically just a proxy. Connect to that service from phone via Orbot.

Comms between phone & proxy are anonymous (over Tor).

Comms between proxy & shared router & internet are same as if you were on your home computer (assuming just a simple proxy).

Not sure if that would meet your needs. Also not sure how to setup that Tor service, but seems possible in theory.

Probably9857

Another possibility: offer to buy a new router?

There's the cost of course, but also has less risk of breaking something & angry roommates.

Worst case: just plug the old router back in.

TrustExecutor

Yes you can! VPN server as in accessing resources on local network? For that you can use Tailscale.
You can run the open source Headscale server implementation on a VPS instead of using Tailscale's coordination servers.
There is also Netbird whick has similar functionality and is also open source.
Netmaker is another alternative.
None of these require port forwarding if you use a coordination server outside LAN.
They use a technicue called NAT traversal/hole punching (STUN/TURN) for establishing connections where one or more peers are behind a resttrictive firewall.

Username001

TrustExecutor what about a "vpn server as accessing the internet (like 4g/LTE router) from outside the network? Is that possible with tailscale too without they're controll servers? If i use a vps to make my own controll server? And would that basicly be the same like the dydns thing people have to do for selfhosting a server anywhay if they don't have a static dedicated ip address?
If the answer to my first question is yes, so i could connect from one device outside the network to another device with 4ginternet/LTE running tailscale and use the internet and ip address from that device like a normal vpn, than i would be interested and would give it a further research.if you had some videos turorials or similar that would be awesome

TrustExecutor

Username001
Yes Tailscale can do all that for you.
You don't need a dynamic DNS, Tailscale has all that functionality built in. If you don't want their coordination server you can host Geadscaleon a computer with public IP or a cheap VPS.

GrouchyGrape

One thing to keep in mind is that you will be adding significant latency doing this. Maybe you don't care, just be aware of it.