this post was submitted on 19 Jun 2025
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[SOLVED] ELI5: How to put several servers on one external IP? (lemmy.today)
submitted 4 days ago* (last edited 4 days ago) by Allero@lemmy.today to c/selfhosted@lemmy.world
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I'm pretty new to selfhosting and homelabs, and I would appreciate a simple-worded explanation here. Details are always welcome!

So, I have a home network with a dynamic external IP address. I already have my Synology NAS exposed to the Internet with DDNS - this was done using the interface, so didn't require much technical knowledge.

Now, I would like to add another server (currently testing with Raspberry Pi) in the same LAN that would also be externally reachable, either through a subdomain (preferable), or through specific ports. How do I go about it?

P.S. Apparently, what I've tried on the router does work, it's just that my NAS was sitting in the DMZ. Now it works!

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[–] jacksquat@what.forfi.win 2 points 4 days ago (5 children)

Honestly Cloudflare Tunnels could be a very simple way to do it. I've always had tremendous luck with it. By using CF you can let them do all the heavy lifting instead of hosting your own... as long as you trust them.

[–] rikudou@lemmings.world 3 points 4 days ago* (last edited 4 days ago) (1 children)

You can use frp to do the same thing a CloudFlare tunnel does without giving them your unencrypted data.

https://github.com/fatedier/frp

[–] aspoleczny@lemmy.world 1 points 3 days ago (2 children)

It's definitely not the same thing. I do understand reservations behind usage free-tier services from Big Bad Corp., but I don't understand malicious reduction of valid arguments for usage of those services.

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[–] Allero@lemmy.today 2 points 4 days ago* (last edited 4 days ago) (2 children)

While not supportive of Big Tech, I do appreciate your piece of advice, and understand self-hosting needs differ!

P.S. Also beware, seems like there's a new attack through Tunnels:

https://www.csoonline.com/article/4009636/phishing-campaign-abuses-cloudflare-tunnels-to-sneak-malware-past-firewalls.html

[–] aspoleczny@lemmy.world 1 points 3 days ago

Again, attack targets end users, not Cloudflare tunnel operators: It abuses Cloudflare Tunnels as a delivery mechanism for malware payloads, not as a method to compromise or attack people who are self-hosting their own services through Cloudflare Tunnels.

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[–] thelittleblackbird@lemmy.world 2 points 4 days ago (3 children)

If you have a prosumer router I suggest you to use the ddns in the router plus a reverse proxy. This would be the cleanest solution.

If you can not, once everything is working with your external access to the synology, the dsm has a built-in reverse proxy so it can redirect http requests to another server. Although this proxy is really simple and limited it can get the work done if you setup is simple enough.

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[–] bruhduh@lemmy.world 1 points 4 days ago (1 children)

NAT translation, i use my openwrt router for that

[–] possiblylinux127@lemmy.zip 1 points 3 days ago

OpenWRT also has great IPv6 support

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