A
Admincraft•2y ago
ZWORX52

Help with port forwarding (again)

I know I've already asked a very similar question on the subreddit, but now that that's down in protest, I have to ask here instead. I'm like many other Minecrafters: I want to host my own server. I have some knowledge of Linux and know how to hsot a server, but I'm not very familiar with the details of networking and so I'm struggling (like so many other people) to get my router to let people in, on a specific port. I've followed every guide I can and even the advice that was given when I asked this question originally. I have set up the static IP in my router's DHCP server settings, althought that probably isn't the problem because I can see my IP quite easily (linux) and it isn't changing much, despite my many restarts :^) I've tried sudo ufw allow 25565 (linux version of "allow port 25565 on my firewall), to no avail, and I of course have the forwarding rule supposedly set up in my router's settings. I am happy to provide extra details, but here's what I think may be important: Rule for forwarding Minecraft port Screenshot of ufw rule (if you care) If you need any more information, I'm happy to provide it if I can. Thanks in advance!
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29 Replies
ProGamingDk
ProGamingDk•2y ago
!cgnat
Carl-bot
Carl-bot•2y ago
We may have bad news for you :C
Open your router's configuration interface. Somewhere you'll see something like 'external' or 'public' IP. If your external IP is in one of the following ranges, you're basically screwed as long as portforwards go: - 10.0.0.0/8 - 172.16.0.0/20 - 192.168.0.0/16 - 100.64.0.0/10 - any IPv6 address/range - This shouldn't be a problem, but Minecraft's IPv6 support is still rather quirky. You're at your own but we're happy if you share your experience. You should ask your ISP for a public and IPv4 address (but this may cost you money). NB: your internal IP should and most probably will be in one of the first three ranges, don't mix them up
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ProGamingDk
ProGamingDk•2y ago
have u checked for this_
ZWORX52
ZWORX52OP•2y ago
Yes Public ip is 173.xx.xxx.xxx
ZWORX52
ZWORX52OP•2y ago
I'm almost certain I'm not behind cgnat. Here's some tracepath output (afaict that's "just a single hop," which (according to that link) means I'm clear, but as i said, I'm no network wizard)
ZWORX52
ZWORX52OP•2y ago
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Auster
Auster•2y ago
that seems fine, tho i am none either lol
Discount Milk
Discount Milk•2y ago
Not public IP that you'd see from "what is my ip" but instead it would be the WAN port of your router.
Discount Milk
Discount Milk•2y ago
https://rtech.support/docs/networking/port-forwards.html Here is a good guide for port forwarding questions
r/TechSupport Wiki
Troubleshooting Port Forwards
An open-source wiki for r/TechSupport
ZWORX52
ZWORX52OP•2y ago
Which I can't find on my router's page... It's not under "wan", "network map", "lan", etc.
Discount Milk
Discount Milk•2y ago
my wan address isn't under wan
Hmmm
ZWORX52
ZWORX52OP•2y ago
I have a ZenWiFi AC if that helps I've gone through the rtech.support guide, and nothing applies/works from what I can tell. I didn't do a 100% thorough run-through, though, so it's possible, albeit unlikely, that I missed something.
Jasper
Jasper•2y ago
https://media.s-bol.com/JPDz3x6KyJW9/original.pdf It's all in there. Page 56: 4.3.3 Virtual Server/Port Forwarding And page 13: 2.1 Logging into the Web GUI Basically you go to http://router.asus.com/, use admin as the username and password, go to port forwarding and add the port.
ZWORX52
ZWORX52OP•2y ago
Except. I already have and it doesn't work 🙃
Jasper
Jasper•2y ago
What's the exact problem?
Snow Kit
Snow Kit•2y ago
@ZWORX52 Are you also still using your Verizon router as well? If you are, then you have two routers and would be behind double nat. if this is the case, you can either - Change your ZenWiFi AC into AP only mode - Remove Verizon's router, there's a guide here: https://community.verizon.com/t5/Knowledge-Hub-Popular-Articles/Using-your-own-router-with-Verizon-Fios/ta-p/1696146
ZWORX52
ZWORX52OP•2y ago
Can I make the AP only mode only affect my specific device? i.e. there's a potential security risk that I'm removing and I'd like to minimize it to the unimportant (no bank info etc) linux device
Snow Kit
Snow Kit•2y ago
no, AP mode would mean that the ZenWiFi AC would only serve as an ethernet switch/wifi access point, not nat, no routing, no nothing
ZWORX52
ZWORX52OP•2y ago
Oh I see
Snow Kit
Snow Kit•2y ago
if you want the features of that router, you should remove the verizon router, as long as you're not using verizon tv
ZWORX52
ZWORX52OP•2y ago
I've been informed that the only job of the Verizon device is to turn the incoming fiber-optic signal into Ethernet signal. It's supposedly called a modem, but my parents seem unsure whether that's what its acual purpose is.
Snow Kit
Snow Kit•2y ago
Wouldn't be a modem, but an ONT in this case
ZWORX52
ZWORX52OP•2y ago
Would it still cause double nat?
Snow Kit
Snow Kit•2y ago
nah, it wouldn't it's not a router, just a dumb box that turns light into rj45 thinking about it, you would also likely see another hop in your traceroute if you were behind double nat
ZWORX52
ZWORX52OP•2y ago
Whereas I seem to only see one (although it takes up two lines...) So if that's not the problem, then what could be?
SaxorUltima
SaxorUltima•2y ago
Can I ask a random question? What is it about 192.168 that makes port forwarding not work?
Jasper
Jasper•2y ago
192.168.x.x is a local IP, what's exactly the problem? Did you input that in the port forwarding's IP field? Ping me when replying btw, otherwise it'll take very long for me to respond 😂
Discount Milk
Discount Milk•2y ago
@SaxorUltima The problem with 192.168.###.### isn't a problem with the IP itself. The problem is where that IP is. If that is your routers WAN IP, you have double NAT. Which is a problem. If your routers WAN IP is something that isn't a private IP address, and is the same as what you find on Google, you're fine.

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