Oracle Listener Security

Are you Protected from any unauthorized users to start and shutdown your Oracle Listener!!!!!!

Add Oracle Listener Security

By default Listener Configured Without password and unauthorized Users can change the setting of listerner with netca,netmgr command and they can start and shut listener. So you should apply security to your listener.

Step 1:To secure your Listener With Password put this command as your oracle user:
#lsnrctl
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 24-AUG-2010 15:09:32

Copyright (c) 1991, 2005, Oracle. All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL>change_password

Old password: 
New password: 
Reenter new password: 

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)
(HOST=training.hemanth.com)(PO RT=1523)))
Password changed for CHAI10
The command completed successfully

LSNRCTL> save_config
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)
(HOST=training.hemanth.com)(PORT=1523)))
Saved CHAI10 configuration parameters.
Listener Parameter File
/oracle/oracle/product/10.2.0/db_1//network/admin/listener.ora
Old Parameter File
/oracle/oracle/product/10.2.0/db_1//network/admin/listener.bak
The command completed successfully
LSNRCTL>exit



If you are not using the default Listener name do like this
and getting this below error follow this:



LSNRCTL> change_password
Old password:
New password:
Reenter new password:
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
inux Error: 111: Connection refused

First you must use this command

LSNRCTL> set cur LISTENER_NAME

LSNRCTL>change_password


Old password: 
New password: 
Reenter new password: 

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)
(HOST=training.hemanth.com)(PO RT=1523)))
Password changed for CHAI10
The command completed successfully

LSNRCTL> save_config
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)
(HOST=training.hemanth.com)(PORT=1523)))
Saved CHAI10 configuration parameters.
Listener Parameter File
/oracle/oracle/product/10.2.0/db_1//network/admin/listener.ora
Old Parameter File
/oracle/oracle/product/10.2.0/db_1//network/admin/listener.bak
The command completed successfully

LSNRCTL>exit