Serverless deploy - connection timedout after 120000ms


I’m trying to deploy a Lambda function using exactly the same code co-workers have successfully used from another network, but I can’t because it tells me “Connection timed out after 120000ms”. Same IAM access granted too.

I work for a bank, and it seems to be a firewall issue.

I can’t find the documentation regarding the access required to execute SLS DEPLOY, does anyone know what kind of access is required? what needs to be granted for it to succeed.