So far, we've only used Openfire to allow users connected to it to communicate with each other. To get it to act as a gateway for providing access to external services, you need the IM Gateway plugin. You'll find it under the list of available plugins on the Plugins tab.
When installed, the plugin creates its own tab that is accessible via Server | Gateways. Using the plugin, you can allow your users access to the following gateways (refer to the previous screenshot):
AOL Instant Messenger
Gadu-Gadu
ICQ
IRC
MSN Messenger
Yahoo! Messenger
The plugin is under constant development and you might see new networks being added as it progresses through versions. In addition to the above list of well-tested gateways, the plugin also supports a few "experimental" gateways (refer to the following screenshot) including:
The only difference between these experimental gateways and the ones listed earlier is that the latter haven't been...