For the record, Age of Empires uses DirectPlay (a DirectX module) for multiplayer connections, just like TA. Though you shouldn't necessarily follow the Age of Empires instructions blindly.
Why? Because of the following, and this is important: there are two slightly different configs for DirectX 7 or earlier and for DirectX 8 or later.
TA uses the DX7 config.
DirectX 7 or earlier: TCP
and UDP 2300-2400 plus TCP 47624 (all both inbound and outbound for both hosting and joining respectively).
DirectX 8 or later: UDP 2302-2400 plus UDP 6073 (all both inbound and outbound, same reason as above).
I'm pretty sure that following the Age of Empires instructions would work in this case, but not necessarily for other games, in case your other game uses the other DX config. Therefore, whenever configuring a router or firewall for games, always check which DirectX version the game uses. On the other hand, you can just configure for both DX7 and DX8 while you're at it, and you won't have to think about it ever again.
![Wink [;)]](/emoticons/emotion-5.gif)
That is, until you reset the router or re-install the firewall.
Microsoft's own article on this can be found here:
http://support.microsoft.com/kb/240429 Or just Google "DirectX ports" and that article is the first search result.