How do I connect to a port forwarded port via a dynamic dns

How do I connect to a port forwarded port via a dynamic dns

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Discussion

Driller

Original Poster:

8,310 posts

284 months

Monday 15th August 2022
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I have tried <dynamicdnsaddress>tongue outortnumber but as John Cleese said, it don’t work.

Harpoon

1,946 posts

220 months

Monday 15th August 2022
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Bit more information on what is setup would help.

Are you inside or outside the network you are trying to port forward to?

If inside, you need NAT Loopback (also called other things though) on your router / firewall to connect to the public DNS name (which resolves to a public IP). Is this setup?

somouk

1,425 posts

204 months

Monday 15th August 2022
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Are you sure your dynamic DNS is working properly?

Few more details would definitely help. How did you forward the port on your router?

Driller

Original Poster:

8,310 posts

284 months

Monday 15th August 2022
quotequote all
Dynamic dns working perfectly as I can access my security cams. I’m trying to access a particular port though. I have done the necessary port forwarding in the router I just need to know what I should physically type into a browser to access this.

Harpoon

1,946 posts

220 months

Monday 15th August 2022
quotequote all
It would normally be:

https://<your-dynamic-DNS-FQDN>:<custom port>

eg

https://mydnsdomain.xyz.com:8080

What port does the device (CCTV DVR?) expect to answer on? If it is default HTTPS (443), then you need to translate (not just forward) the custom port to 443. Or, if you can only port forward and not translate on your router, you can see if you can change the default port on your device to the custom port you want to use.

As a side note, if it is a DVR or CCTV cameras being accessed, make sure they are fully updated with the latest firmware and default passwords changed as they are notorious for having crap security and being full of holes which can be exploited to compromise the network they sit on.

Driller

Original Poster:

8,310 posts

284 months

Monday 15th August 2022
quotequote all
Harpoon said:
It would normally be:

https://<your-dynamic-DNS-FQDN>:<custom port>

eg

https://mydnsdomain.xyz.com:8080

What port does the device (CCTV DVR?) expect to answer on? If it is default HTTPS (443), then you need to translate (not just forward) the custom port to 443. Or, if you can only port forward and not translate on your router, you can see if you can change the default port on your device to the custom port you want to use.

As a side note, if it is a DVR or CCTV cameras being accessed, make sure they are fully updated with the latest firmware and default passwords changed as they are notorious for having crap security and being full of holes which can be exploited to compromise the network they sit on.
It’s from outside the LAN. Tried all the above and you have confirmed I’m at least entering the info in the right format so I’ll keep trying, thanks!

sunbeam alpine

7,060 posts

194 months

Monday 15th August 2022
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Some ISPs block commonly-used port numbers. What port are you using?

Harpoon

1,946 posts

220 months

Monday 15th August 2022
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Does your router offer port translation (not just forwarding)?

duff-man

628 posts

212 months

Tuesday 16th August 2022
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Have you tried using your external ip and port to rule out DNS?