Unable to access some websites outside US GCP

Question

I have a project on GCP that all machines stay on Southamerica (A,B or C). The machines on any Southamerica zone are unable to access some websites, currently I found those two websites:

• https://cnisnet.inss.gov.br/cnisinternet/faces/pages/perfil.xhtml
• https://ccm.prefeitura.sp.gov.br/login/contribuinte?tipo=F

If however I create a machine on the US Region (any zone) I can connect normally, did anyone passed trough this and were able to solve? I've tried to create a new project and use only the default network, same issue.

Thank you.

Answer 1

It seems that after some day the issue "fixed itself". GCP support is still unable to understand or give a valid solution, but after some days this is working fine.

The SSH tunneling worked as expected as well, so if someone has the same issue, this can be a viable solution.