The network is working fine and ping with even mirrors.centos.org is working. but using yum has errors like this mentioned below and also DNS sets to 8.8.8.8.
Errors during downloading metadata for repository 'baseos':
- Curl error (7): Couldn't connect to server for https://mirrors.centos.org/metalink?repo=centos-baseos-9-stream&arch=x86_64&protocol=https,http
[Failed to connect to mirrors.centos.org port 443: Connection refused]
Error: Failed to download metadata for repo 'baseos': Cannot prepare internal
mirrorlist: Curl error (7): Couldn't connect to server for https://mirrors.centos.org/metalink?repo=centos-baseos-9-stream&arch=x86_64&protocol=https,http
[Failed to connect to mirrors.centos.org port 443: Connection refused]
