| VALID_NODE_CHECKING_REGISTRATION_listener_name [message #636078] |
Thu, 16 April 2015 05:09 |
John Watson
Messages: 8964
Registered: January 2010
Location: Global Village
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Senior Member |
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I'm trying to sort out some possible security issues with networking, involving DNS poison attacks and a listener accepting local or remote registrations. According to the docs, http://docs.oracle.com/cd/E11882_01/network.112/e10835/listener.htm#NETRF1996 ,this listener.ora parameter can have these values:
Quote:
off | 0 to specify valid node checking registration is off, and no checking is performed.
on | 1 | local to specify valid node checking registration is on, and all local IP addresses can register. If a list of invited nodes is set, then all IP addresses, host names, or subnets in the list as well as local IP addresses are allowed.
subnet | 2 to specify valid node checking registration is on, and all machines in the local subnets are allowed to register. If a list of invited nodes is set, then all nodes in the local subnets as well as all IP addresses, host names and subnets in the list are allowed.
I can't see the different between 1 and 2. What am I missing?
Thank you for any insight.
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