Client Identifiers
This panel allows you to either define a new client identifier or modify
an existing one. The TN3270 server uses Client identifiers to match clients as they connect.
For example, a client identifier may be a client's IP address. When the client connects to the server, the server sees this client's
IP address matches the one defined in the client identifier. The server then uses this client identifier to know
which VTAM LU to assign to the client and to which application to connect the client.
Tasks
When you are defining a new client identifiers, you perform several tasks.
- You will decide what type of client identifier you are defining. The possible types are:
- Client's user ID (only available for ports using security)
- Client's host name
- Client's IP address
- Destination link address
- Destination link name
- Once you decide on the type, you will next decide whether the client identifier should be a group or an individual.
For example, you may select the type as a client's IP address. You can then either define the client identifier to
be a individual IP address or a group of IP addresses. If it is an individual IP address, then a client with that exact
IP address must connect for the TN3270 server to find a match. If you define an IP address group, you can populate
the group with a collection of IP addresses and/or subnets. This allows for a large number of clients to connect that will match the client identifier.
- You will assign LUs to the client identifier. The server uses the client identifiers to match clients when they
connect. Once a match is found, the server sees which LUs you have assigned to the client identifier and then uses
one of these LUs for the client's connection.
- You may assign applications to the client identifier. Once the server has matched a client identifier, the server
sees which application you have assigned to the client identifier and connects the client accordingly.
Client identifiers search order
When a client connects in, the server may find that the client matches multiple client identifiers.
The server uses the following search order priority to determine the match:
- Individual client user ID
- Individual client hostname
- Individual client IP address
- Group of client user IDs
- Group of client host names
- Group of client IP addresses
- Individual link IP addresses
- Individual link name
- Group of link IP addresses
- Group of link names
Tree structure
This panel shows a tree of all the currently defined client identifiers. You can expand a client identifier in the tree
and see the applications and LUs that are assigned. Each client id shows the five types of assignments
that may be made:
- Application for terminal LUs
- Application for linemode sessions
- Application for printers
- Terminal LUs
- Printer LUs
Use the tree structure to see what assignments have been made. If no assignment has been made for one of the types,
the default setting is displayed.
Steps
Before you begin, know whether you are defining a new client identifier
or modifying an existing one.
-
If you are defining a new client identifier, click New and you see the Object
Type panel, where you will need to specify the type of object you are mapping
to this client identifier.
-
Select a client identifier in the tree and click Edit to change an existing definition.
-
Select a client identifier in the tree and click Delete to delete an existing definition.
You have completed this panel after you have defined, edited or deleted
client identifiers. You are not required to define any client identifiers. However, if no client identifiers are
defined, you must use at least one of the default LU pools.
Push buttons
Click New to add a new client identifier.
Click Edit to edit a client identifier you've selected.
Click Delete to delete a client identifier you've selected.