@Jioldihau39 I believe your issue is the following: Take a look at [Carrier-grade NAT](https://en.wikipedia.org/wiki/Carrier-grade_NAT), also known as NAT444. Swisscom is using this and in fact, this basically means that there is another router between your IB and the actual internet. You can tell that you are part of the carrier grade NAT if your public IP is 100.xxx.xxx.xxx (at least this was the range they used two years ago, might have changed though). This obviously means that your router is not accessible over the internet. For this you need to have your router taken out of the garrier grade NAT, which you can do by calling support. There are some articles on what you need to tell the support to be redirected to the guys who can change this as fast as possible.
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