VNC^® Enterprise Edition User Guide

Step 3: Identify VNC Server on the host computer

You must uniquely identify VNC Server running on the host computer you want to connect to.

If you are connecting within a private network such as a LAN, enter the network address of the host computer itself in the VNC Server dropdown. This address can take the following forms:

•  A friendly host name for the host computer, for example johndoe. (Note this facility may not be available.)

•  An IP address for the host computer in IPv4 format, for example 192.168.2.187.

•  An IP address for the host computer in IPv6 format within square brackets, for example [2001:db8::1]. (IPv6 may not be available.)

If you do not know the network address of the host computer, see Connecting within a private network.

If you are connecting over the Internet, for example to friends or family, and the host computer is protected by a router, then enter the network address of the router in the VNC Server dropdown instead. If you do not know the network address of a router, see Connecting over the Internet.

In the following example, the host computer is identified by an IPv4 network address:

(Windows XP)

Typically, a host computer needs no further identification. This is because, by default, VNC Server listens for network communications on a registered port, 5900. Carry on from Step 4: Select an encryption option.

There may be circumstances, however, when VNC Server is listening on a different port. This can occur if the host computer is running UNIX or Linux, or if more than one instance of VNC Server is running on the host computer. If, when you try to connect, you see an error message similar to the following:

then you probably need to qualify the network address with a port number. For more information, see Qualifying a network address with a port number.