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Websphere MQ - enhance CHLAUTH User mapping with wildcards
Enhance MQ v7.5 and v8 to provide a more flexible CHLAUTH feature for the USERMAP feature. Currently this allows mapping of a "client asserted" id to another id value for MCAUSER purposes.
However it does not allow wildcards in the client id mapping. This makes it unsuitable to replace our current usage of the BlockIP2 exit.
The CLNTUSER(client-user-name) option should allow wildcards in the specification of the "client-user-name" - such as "?" for single character wildcards and "*" for to match zero or more characters at the end of a string. For example "thisid??" or "this*" or "this?id*" .
THe choice to use wildcards (and any supposed risk) would be entirely the choice of the customer to use or not.
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