Regardless of the type of the server, the remote control feature requires the server to have an open TCP port. If the recorder is connected to a public network (Internet), or a relatively big local area network, it is essential that the recorder is protected by a firewall. The ports required by the remote control feature must be directed through the firewall to the server. For more information about port (re)direction and firewalls, please contact your reseller or a computer store.