A direct connection is possible when the Host is in direct visibility to the Viewer, i.e. the Host can be addressed by its IP address or hostname (DNS name).
This connection type does not require any intermediary (relay) servers in-between Viewer and Host and is by definition the fastest way to access a remote Host.
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Related links: Getting started, Ports and port forwarding
An Internet-ID connection uses an intermediary server on the Web ("Internet-ID server") to broker a remote connection between Viewer and Host.
Learn more about Internet-ID connection...
Related links: Getting started
The Host is a remote module installed on a target (i.e. remote) PC. This module works for both unattended and attended access.
Related links: About Remote Utilities
Agent is a remote module for spontaneous-only support. The Agent displays its own window that can be branded with your custom logo and text.
Agent doesn't require installation and administrative privileges to run.