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I have a MacBook Pro from 2014 running macOS Mojave. I cannot SSH into a remote server, use git over SSH or use the Mac App Store while connected to my Wi-Fi at home. Some of my mail accounts seem to have a problem, others work.

There is no problem with other devices, there is no problem if I am connected over Ethernet, there is no problem if I am connected via a different Wi-Fi, there is no problem if I use my university VPN via Wi-Fi, and there is no problem if I am running Ubuntu via USB.

The problem seems to be a specific combination from Home Wi-Fi and my macOS. I don't really want to reinstall my OS, and I don't have a single clue what I can do or try.

DNS-Servers are:

  • 8.8.8.8

and

  • 8.8.4.4

for IPv4, and

  • 2001:4860:4860::8888

  • 2001:4860:4860::8844

for IPv6.

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  • Could it be a DNS issue, perhaps? What happens if you go to System Preferences > Network and unlock it, hit Advanced in the bottom right, and add 1.1.1.1 and 1.0.0.1 over in DNS? – SilverWolf Apr 25 at 2:29
  • I forgot to mention that, DNS-Servers are 8.8.8.8, and 8.8.4.4 for IPv4, and 2001:4860:4860::8888 , 2001:4860:4860::8844 for IPv6, although I don't have IPv6. Adding those DNS-Servers you mentioned and flushing the DNS-Cache has no effect. – RoombaZoomba Apr 25 at 6:12
  • When you say "cannot SSH", what do you mean, more exactly? Do you get any error messages? What is the output if you add the -v option (verbose) to the ssh command? – Ture Pålsson Apr 26 at 13:55
  • The output: OpenSSH_7.9p1, LibreSSL 2.7.3 debug1: Reading configuration data /Users/***/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 48: Applying options for * debug1: Connecting to ***.com port 22. And after that, nothing happens, so no error output, it seems like nothing is happening at all – RoombaZoomba Apr 26 at 14:58
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This could be due to network segmentation.

What type of gateway/router are you using?

Is it possible that you are connecting to a guest type network, or that the gateway has a network segmentation feature which is turned on?

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  • I am using the router I got from the Internet-Provider, it is called EasyBox 804, I am using the normal network, and there is no guest network activated :/ – RoombaZoomba Apr 25 at 21:07

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