Mit DynDNS auch unterwegs auf dein Heimnetz zugreifen

@tsgzwro

The error message actually says very precisely what the problem is, namely that there is no public IP address available for your Anschluss.

Technically the problem is that Swisscom has activated CGNAT on your Anschluss and you now have to get support to turn this off again on your contract.

Only the hotline or myService can do this (usually without charge).

As soon as CGNAT has been deactivated, you will also be able to set up the DynDNS and the VPN connection.

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Hobby-Nerd ohne wirtschaftliche Abhängigkeiten zur Swisscom

Illustration of a man with a laptop

Since you can’t give thumbs up to answers under “articles”, I express my agreement with @[deleted]’s comments in writing 😉

That’s exactly how it is. It’s unclear why support couldn’t help. It’s best to just call again and hope that this time you can get someone on the phone who isn’t incompetent. (And if some clueless person wants to reset your router seven times: hang it up. So the phone, I mean…)

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I called again with the above note. Another operator was also on the line and forwarded this immediately. Hotline tried to reach me later by phone. I don’t know what happened at the moment because I’m not on site and have to check this later and finish my settings.

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@tsgzwro

Then we hope that it will now be activated for you too.

By the way, in comment #3 to this knowledge article I already pointed out the still missing reference to CGNAT, but since public IPv4 addresses are increasingly scarce at Swisscom and sometimes have to be purchased externally, they want effective customer access to this Goods that are becoming increasingly valuable may not even be really customer-friendly…

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Hobby-Nerd ohne wirtschaftliche Abhängigkeiten zur Swisscom

a year later

Hello community

Someone may end up here with the intention of being able to access their router from outside, i.e. the Internet. DynDNS alone doesn’t do that. To do this, you have to activate the VPN server on the Internet box AND set up a corresponding VPN client on your cell phone or PC. This is described well and understandably here. DynDNS is just a help to use the selected DNS name instead of the IP when setting the VPN.

Once everything is set up and the VPN client is active, you can then access the router from the Internet (i.e. cell phone in the mobile network) via 192.169.1.1 (enter it in the browser).

This is the basic requirement if you want to control an IP cam from outside, for example. How this has to be done in detail is a different matter (and involves safety risks if it is not done correctly).

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3 months later

Hello community,

I replaced my Internet-Box 2 with a new Internet-Box 3 and restored the MySwisscom settings. All settings are the same as on my old box, except the DynDNS setting. This DynDNS setting is currently shown as disabled, and when I try to enable it, I cannot use the same hostname as before because it is already registered on the Swisscom DynDNS server against my current public IP address. How can I solve these puzzles, does anyone know?

Screenshot 2021-05-19 163104.png

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4 months later

A little tip: call 0800 822 830 directly. This is the myService hotline. These people are really competent and will convert your router from CGNAT to NAT in 5 minutes! The only disadvantage: the call costs 40CHF.-/15min. I think it’s justifiable.

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However, switching from CGNAT to NAT shouldn’t cost anything, even if you end up calling the people at myservice because the 1st level hotline is sometimes not fit enough for that.

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If you don’t achieve your goal with 1st level support, you have to politely but firmly request second level support, but certainly not pay anything for the CGNAT conversion.

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5 months later

Ask:

It is also possible using DynDns of the router to **multiple DNS providers ** to send the data (IP)? Will this be possible in a future version of Swisscom or is this not planned?

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@hed:

I would specify: several at the same time.
e.g. can I share my IP with several DynDns services from Infomaniak? Multiple domains should point to one and the same IP.

Graphically speaking: the posted image @hed (=the shot) several times

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@hed: several one after the other just doesn’t work. It would be cool if Swisscom were included on the list of development priorities.

@kaetho: great, I’ll try that and get involved - thanks for the video!

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@kaetho

Thanks for the information regarding CNAME and the video.

I would like to use ‘meindedomain.ch’ as ​​the address (enter it in the browser and display it, etc.).

With a CNAME record I always need a prefix -> “praefix.meinedomain.ch”

What solutions are there so that I can use my domain without a prefix, as is usual?

Thank you in advance for any solutions

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This doesn’t work the way you want to do it. According to RFC1034: “If a CNAME RR is present at a node, no other data should be present; this ensures that the data for a canonical name and its aliases cannot be different.” For the second level domain there will certainly be SOA, NS, MX and, depending on the circumstances, other records. Ie. you need to choose a hostname (or what you call a prefix) for the CNAME.

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Have you tried turning it off and on again?

a month later

I created the Swisscom DynDNS and I have the address, but I cannot access the router on the move.

Any suggestion pls?

Thank you