Hi all,
As the title suggests, I’m trying to run an ejabberd (xmpp) server behind an nginx reverse proxy. The reason is, I want to be able to run the server on my raspberry pi at home, but have people connect to it through my VPS, which is running nginx. This would be nice because I don’t need a static ip and I don’t have to leak my ip address.
I have looked this up, but have not found an answer that works exactly for my use case.
My current nginx configuration looks like this:
stream {
upstream xmppserver {
server 10.8.0.3:5223;
}
upstream turnserver {
server 10.8.0.3:3478;
}
map $ssl_preread_alpn_protocols $upstream {
"xmpp-client" xmppserver;
"stun.turn" turnserver;
"stun.nat-discovery" turnserver;
}
server {
listen 6969;
proxy_pass $upstream;
proxy_protocol on;
}
}
And I have a DNS entry telling XMPP clients to contact my server at port 6969 (this was just for testing):
I would also need to figure out how to supply ejabberd with the correct certificates for the domain. Since it’s running on a different computer than the reverse proxy, would I have to somehow copy the certificate over every time it has to be renewed?
Thank you for your help.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:
| Fewer Letters | More Letters |
|---|---|
| DNS | Domain Name Service/System |
| HTTP | Hypertext Transfer Protocol, the Web |
| IP | Internet Protocol |
| SSL | Secure Sockets Layer, for transparent encryption |
| TLS | Transport Layer Security, supersedes SSL |
| VPN | Virtual Private Network |
| VPS | Virtual Private Server (opposed to shared hosting) |
6 acronyms in this thread; the most compressed thread commented on today has 8 acronyms.
[Thread #136 for this sub, first seen 13th Sep 2023, 15:05] [FAQ] [Full list] [Contact] [Source code]
This would be nice because I don’t need a static ip and I don’t have to leak my ip address.
How does the VPS know how to find your rpi?
Could you not just use something like duck dns on a cronjob and give out that url?
I would also need to figure out how to supply ejabberd with the correct certificates for the domain. Since it’s running on a different computer than the reverse proxy, would I have to somehow copy the certificate over every time it has to be renewed?
Since the VPS is doing your TLS termination, you would need an encrypted tunnel of some sort. Have you considered something like Istio? That provides mTLS out of the box really… I’ve never seen it for this kind of use case but I don’t see why it wouldn’t work.
The vps communicates with the rpi through a vpn.
I have not heard of duck dns nor lstio, but I’ll check it out when I get home.
Istio is a service mesh. You basically run proxies on the vps and the rpi. The apps make calls to localhost and the proxy layer figures out the communication between each proxy.
Duck dns is just a dynamic dns service. It gives you a stable address even if you don’t have a static ip.
How would I use that in this situation? I don’t get it. I already have a vpn set up to communicate between the two devices, and have been successfully running multiple services in this configuration for about a month. It’s just XMPP that I’m having trouble with.
I guess this is based on this guide? https://wiki.xmpp.org/web/Tech_pages/XEP-0368
But since you don’t actually need to multi-plex HTTP with XMPP, why not just configure port forwarding like you would do in a local network (assuming your VPS is connected to your Rasberry via a Wireguard VPN or similar)?
For the certs you can request them again from your Rasberry easily if you use the DNS-01 method. That also allows you to get wildcard certs, which are very useful with the multiple subdomains you usually have for a XMPP service.
