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62 posts

Master Geek
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Topic # 226135 21-Dec-2017 23:21
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Good morning,




It's been a long time since I had a domain and I can't seem to work out how to sort this out. I'm fairly confidant with local networking but this just has my brain muddled.




I bought a domain, X. My internet connection is a dynamic IP, so I set up a NO-IP dns address, Y. The local address of my server is Z.




I've set up a port forward rule in my router for port 18465 to Z.


I've pointed my dyn dns Y at Z.


I've pointed X at the DNS servers given by NO-IP and set CNAME "www" to Y.




I cannot connect to my public IP address, Y or X from outside the network.




Any pointers on what I've missed or what I can try are much appreciated.





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337 posts

Ultimate Geek
+1 received by user: 52


  Reply # 1923463 21-Dec-2017 23:47
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With you saying you cannot connect to your public IP from outside the network, my first guess would be, is the port forwarding working correctly?


You can verify the port forwarding is working by using something like to confirm it can be seen outside your network.


If not, then it is possible that this is not working correctly, or that the IP address you have is a CG-NAT IP address rather than a public IP address.


I'd recommend checking those two things first and once the port forwarding is working, then technically the rest of it should work.  



Any comments made are my personal views and does not represent those of my employer

3767 posts

Uber Geek
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  Reply # 1923474 22-Dec-2017 07:13
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I have exactly the same setup.  Domain name with a cname record to home @ my domain.


I only have port 563 open (which is smtps I think - but I'm using it for SSH).   But you should be able to access your domain with it's ip address, and with your no ip address and then lastly with your domain address.



Previously known as psycik

Gigabyte AMD A8 Brix --> Samsung LA46A650D via HDMI, NextPVR,OpenHAB with Aeotech ZWave Controller
Media:Chromecast v2, ATV4, Roku3, Raspberry PI temperature Sensors and Bluetooth LE Sensors,HDHomeRun Dual
Windows 2012 
Host (Plex Server/Crashplan): 2x2TB, 2x3TB, 1x4TB using DriveBender, Samsung 850 evo 512 GB SSD, Hyper-V Server with 1xW10, 1xW2k8, 2xUbuntu 16.04 LTS, Crashplan, NextPVR channel for Plex,NextPVR Metadata Agent and Scanner for Plex


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Uber Geek
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  Reply # 1923490 22-Dec-2017 07:54
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Windows firewall?? (Assuming your "server" is windows based)

62 posts

Master Geek
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  Reply # 1923824 23-Dec-2017 00:44
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Hi folks,




Server is a linux box.




I can now access my Plex server at [public ip address]:32400/web and [dynamic dns]:32400/web.




How can I make my [domain] point to [dynamic dns]:32400/web?




Currently I have a CNAME record which points to "[dns]." (note the period).




Any help is appreciated :)





1916 posts

Uber Geek
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  Reply # 1923825 23-Dec-2017 01:54
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So lets say you want to point to your dynamic dns host name. And lets say that is plex.dyndns.tld


The DNS setup for that would be IN CNAME plex.dyndns.tld


You don't add any port numbers.


Various systems will do the setup for that differently, so refer to the manual.




PS: Usually, if you have a dot after an entry, thats to signify it being a full domain, not a host of the domain. Some more info on that here.


PPS: DNS won't let you "make my [domain] point to [dynamic dns]:32400/web?". You can have your domain serve up the dynamic dns ip-address. But you would have to deal with the http redirect on your server on the dynamic ip-address to have it send you to the right port and URI. That should typically be a straight forward redirect on the web server at the dynamic dns ip-address.

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Uber Geek
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  Reply # 1923840 23-Dec-2017 07:25
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A bit off topic but is great to use as it's free without having to manually renew every month.

Cheers, Matt.

My views (except when I am looking out their windows) are not those of my employer.

62 posts

Master Geek
+1 received by user: 1

  Reply # 1925560 27-Dec-2017 01:41
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That should typically be a straight forward redirect on the web server at the dynamic dns ip-address.





Can you point me in the right direction? I'm running apache2 and ubuntu server. After some googling I can't seem to figure it out.





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