Inter-Actief / Inter-Actief/Beheer_Issues

Look into post-quantum cipher support for SSH (and potentially HTTPS)

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Description

My SSH client has started warning me about post-quantum cipher support. We should look into if our servers already support these ciphers, and enabling it if we do. This would impact all SSH-reachable servers, as well as all HTTPS/TLS servers.

```
» ssh -i ~/.ssh/interactief albertskja@ia-login.ia.utwente.nl
** WARNING: connection is not using a post-quantum key exchange algorithm.
** This session may be vulnerable to "store now, decrypt later" attacks.
** The server may need to be upgraded. See https://openssh.com/pq.html
Enter passphrase for key '/home/kevin/.ssh/interactief':
```

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