Note: Both the guest and the host must be connected to the Internet in order for you to make the connection.

This brief guide is intended to help first time users of Timbuktu Pro quickly set up and establish a connection between two Macs over TCP/IP through an Apple AirPort running Network Address Translation. This is by no means a definitive guide. There are alternate ways of establishing a Timbuktu Pro TCP/IP connection. This guide only presents one of them.

What is Network Address Translation (NAT)?

Network Address Translation enables a Local Area Network (LAN) to use one set of one IP addresses for internal traffic and a single IP address for external traffic. NAT then translates the private IP address being used on an individual system, on a network, to a valid Internet IP address (the one on the AirPort). Outbound connections to the Internet through an AirPort that is running NAT should not be a problem when using Timbuktu Pro. However, inbound connections cannot be made due to the fact that the network uses private IP addresses which cannot be located on the internet unless you are running NAT. Then, a connection can be made to a SINGLE SYSTEM that is behind the AirPort.

Following are the steps to take before the connection can be made.

What ports do I need open?

In order for Timbuktu Pro to establish a connection to a system behind an AirPort, a few things must be configured on the AirPort itself:

First, the ports that Timbuktu Pro uses must be forwarded in the Airport to allow Timbuktu Pro traffic through.

Please refer to the following chart for a listing of the ports that Timbuktu Pro uses:

Firewall	Timbuktu Pro v5.2.x	Past versions
Connection (Handshaking)	TCP 407	UDP 407
Control	TCP 407	TCP 1417
Look	TCP 407	TCP 1418
Send	TCP 407	TCP 1419
Exchange	TCP 407	TCP 1420
Chat	TCP 407	Dynamic TCP Ports
Knock	TCP 407	Dynamic TCP Ports
Invite	TCP 407	Dynamic TCP Ports
Intercom	Dynamic TCP Ports	Dynamic TCP and UDP Ports

*Note:

-If you are making a connection to or from a system where a Windows OS or a Mac (running v5.2.3 or older) is involved, you must open UDP 407 and TCP ports 1417,1418,1419 and 1420.

-Most users do not want to export services for the Timbuktu Pro services that require dynamic ports. In order to utilize those services, all dyamic ports must be exported.

To set up inbound port mapping:

1. Open the AirPort Admin Utility and open your base station's configuration.
2. Click the Network tab.
3. Click the Port Mapping button.
4. In the Port Mapping window, click Add and enter the following information:
   • Public Port: 407 (only port required to enter if making a Mac to Mac connection)
   • Private IP Address: The manually assigned, private IP address of your system that you are wishing to connect to.
   • Private Port: 407
5. Repeat step #4 for additional ports that need to be opened per the chart above

For more information, please visit Apple's AirPort support site at:

http://www.info.apple.com/usen/airport/

If you are wanting to connect to multiple machines located behind your AirPort, directions for changing the contact TCP port can be found at the following URL: tcpport.html

Configuring Timbuktu Pro:

Once your Apple AirPort is properly configured, you must now set up Timbuktu Pro to connect to the host (controlled) machine.

Instructions to ensure that Timbuktu Pro is correctly configured for a TCP/IP connection can be found at the following link: tcpip.html

Note: Once your AirPort and Timbuktu Pro is configured, you will need to use the IP address of the AirPort in the TCP/IP address field, within the New Connection window, to properly establish a connection