error 10:64

Try pinging what is crossed out from the CommServe and see if it resolves the name properly. 

what is crossed out is just the name of the media agent

Description: Unable to communicate with the remote machine [media-agent-name] to start the Data Pipe. Please check the network connectivity between the local machine and the remote machine and verify this product's Communications Service is running on the remote machine, Error [Unable to resolve remote host media-agent-name to any IP family: 0xFFFFFFFE:{CQiIPAddr::GetAllByName(217)/ErrNo.-2.(Unknown error 18446744073709551614)}]. 

If you ping it does the name resolve to an IP? This is a Windows name resolution error.

how can i change media hostname to IP?

it won’t let you at the media agent level, BUT if you have a file system installed on it you can change it at the file system level and that will be reflected on the media agent.

@Aplynx I asked the security team to release port 8403, now it has the following error:
 

Unable to communicate with the remote machine [ip -media] to start the Data Pipe. Please check the network connectivity between the local machine and the remote machine and verify this product's Communications Service is running on the remote machine, Error [Connection failed on mantis3 with these errors: 1) No direct tunnel to ip-media; 2) Timed out waiting to be patched through a tunnel].

Unable to communicate with the remote machine [ip -media] to start the Data Pipe. Please check the network connectivity between the local machine and the remote machine and verify this product's Communications Service is running on the remote machine, Error [Connection failed on mantis3 with these errors: 1) No direct tunnel to ip-media; 2) Timed out waiting to be patched through a tunnel].