HTTPS access only after attempting SSH connection first

Subbeh

4/23/24, 1:23 AM

Whenever I try to connect to https://github.com from a Docker container running centos:7 (or any other image I've tried), the connection cannot be established:

$ curl https://github.com -v -m 5
* About to connect() to github.com port 443 (#0)
*   Trying 20.248.137.48...
* Connected to github.com (20.248.137.48) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* Operation timed out after 5001 milliseconds with 0 out of 0 bytes received
* Closing connection 0
curl: (28) Operation timed out after 5001 milliseconds with 0 out of 0 bytes received

However, after I run ssh github.com I can access the site using HTTPS as well:

$ ssh github.com
Permission denied (publickey).

$ curl https://github.com -v -m 5
* About to connect() to github.com port 443 (#0)
*   Trying 20.248.137.48...
* Connected to github.com (20.248.137.48) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* SSL connection using TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
* Server certificate:
*       subject: CN=github.com,O="GitHub, Inc.",L=San Francisco,ST=California,C=US
*       start date: Feb 14 00:00:00 2023 GMT
*       expire date: Mar 14 23:59:59 2024 GMT
*       common name: github.com
*       issuer: CN=DigiCert TLS Hybrid ECC SHA384 2020 CA1,O=DigiCert Inc,C=US
> GET / HTTP/1.1
> User-Agent: curl/7.29.0
> Host: github.com
> Accept: */*
>
< HTTP/1.1 200 OK

This only works if I actually try to connect using SSH. I have tried adding the SSH key fingerprint using ssh-keyscan but it seems that this has no effect. The presence of the known_hosts file has no impact on whether or not I can connect using HTTPS.

How can I get this to work, without having to use SSH to authenticate the host first?

0 + 1

ssl

ssh

https

Nikita Kipriyanov

4/23/24, 3:46 AM

Looks very much like like firewall issue on your side (not just on your computer, but somewhere near you along the path).

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: HTTPS access only after attempting SSH connection first

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