PLANNING


Pass-through servers and hunt groups
Pass-through is a process that runs on a server and establishes connections between the users and servers connected to that server and other servers. Pass-through connections use an intermediary server as a "stepping stone" to connect the two servers.

Pass-through is useful in two instances:


You can set up a pass-through server so that it leads to additional pass-through servers as well as directly to a pass-through destination server. Thus, you can chain together multiple pass-through connections to enable a client to pass through several servers until it connects to a given target server.

Pass-through access is valuable to Notes client users as well. When you provide a Notes client with access a to a pass-through server, the client user can connect to a single server to access other network servers. For remote users, this enables access to multiple destination servers on the same LAN over a single phone connection. Using a pass-through server this way saves the time and expense of configuring many individual servers to support modem connections and of requiring Notes client users to use multiple phone calls to access multiple servers.

Pass-through Logging

To enable to monitoring of pass-through traffic for security reasons, after you configure a server as a pass-through server, the server log (LOG.NSF) records information about pass-through sessions established through that server. For example, the log records information about users who access this server for to make pass-through connections to other servers.

Hunt groups

Note: Hunt groups use a direct dialup modem (X.PC) connection. Support for this type of connection is available only in releases of Domino earlier than release 8.5. You may continue to use Domino Administrator 8.5 to configure and maintain direct dialup modem support, but only on servers running releases earlier than 8.5.

If your telecommunications infrastructure supports a hunt group -- that is, a pool of modems that are connected to different phone lines but that use a single phone number -- you can configure Domino servers and Notes client users to connect to a hunt group on a pass-through server. Whenever a call is made to the hunt group number, the incoming call is routed to the first available modem in the group.

You can use a hunt group with one or more pass-through servers. If more than one pass-through server is used in the hunt group, to allow any pass-through server in the hunt group to receive a call and route it to the destination server, the calling server or user must use a Hunt Group Connection document.

Related concepts
Planning server-to-server connections
The Domino server log file (LOG.NSF)

Related tasks
Setting up a server as a pass-through server
Setting up a server as a pass-through destination