Configuring the Sametime Gateway exclusion list
You can prevent external users from communicating with a particular IBM® Sametime® cluster or stand-alone server in a Sametime community by creating an exclusion list. The IBM Sametime Gateway Server denies external communication requests for Sametime users hosted on all clusters or stand-alone servers specified on the list.
Before you begin
About this task
A Sametime community can be composed of one or more clusters and one or more stand-alone servers (one Sametime community stand-alone server can be referred as a cluster with one member). You can create a distribution deployment, which distributes the different users to different clusters and stand-alone severs, for example, according to their geographic location.
An exclusion list is a list of clusters (for a stand-alone Sametime server, the cluster name is the server name) deployed within a local Sametime community; you define the list as a Sametime Gateway custom property. Use the exclusion list to prohibit external users from communicating with users in a community hosted on one of the specified clusters. Subscribe (awareness) and chat (instant messaging) requests from all external users to the local users hosted on the clusters listed on the exclusion list are rejected by the Sametime Gateway server. You enable this feature with the custom property called "Sametime community exclusion list".
For example, suppose the Example Corporation has two distributed Sametime clusters, one in Europe and one in the United States.
On the Sametime Gateway, there is an exclusion list containing Europe cluster name- this prevents the Sametime Gateway from connecting to any servers in the Europe cluster. When an external user (outside of Example Corporation; for example, on AOL) adds a user hosted on the Europe cluster to her contact list, the subscribe request is routed to the Sametime Gateway, which denies the request because it cannot access users in that cluster. In this example, the USA cluster does not appear on the exclusion list, so the external user can access people in that cluster.
Follow these steps to define an exclusion list. For details, see Adding custom properties.