What platform/OS are you using? What version of SQLA are you using? What server and client options have you tried? What error messages are you getting? Have you tried -z on the server and LogFile= options on the client to try to diagnose what the problem might be? etc. etc. etc.
Also please provide more details of your network configuration.
What is the error number and message? Does the connection work with HOST=...?
What platform/OS are you using? What version of SQLA are you using? What server and client options have you tried? What error messages are you getting? Have you tried -z on the server and LogFile= options on the client to try to diagnose what the problem might be? etc. etc. etc.
Also please provide more details of your network configuration.
Please don't encourage bad behavior by pretending it is normal.