知识大全 Oracle监听口令及监听器安全

Posted 2022-07-16 知

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　　很多人都知道 Oracle的监听器一直存在着一个安全隐患假如不设置安全措施那么能够访问的用户就可以远程关闭监听器

　　正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= )(PORT= ))

　　(CONNECT_DATA=(SERVICE_NAME=eygle)))

　　命令执行成功

　　大家可以发现此时缺省的监听器的日志还无法记录操作地址 No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST= )(PORT= ))) NOV : : * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=Administrator))(MAND=stop) (ARGUMENTS= )(SERVICE=eygle)(VERSION= )) * stop *

　　为了更好的保证监听器的安全大家最好为监听设置密码 [oracle@jumper log]$ lsnrctl LSNRCTL for Linux: Version Production on NOV : : Copyright (c) Oracle Corporation All rights reserved Wele to LSNRCTL type help for information LSNRCTL> set current_listener listener Current Listener is listener LSNRCTL> change_password Old password: New password: Reenter new password: Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= )(PORT= ))) Password changed for listener The mand pleted successfully LSNRCTL> set password Password: The mand pleted successfully LSNRCTL> save_config Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= )(PORT= ))) Saved LISTENER configuration parameters Listener Parameter File /opt/oracle/product/ /neork/admin/listener ora Old Parameter File /opt/oracle/product/ /neork/admin/listener bak The mand pleted successfully

　　在我们设置密码后远程操作将会因缺失密码而出现失败

　　正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= )

　　(PORT= ))(CONNECT_DATA=(SERVICE_NAME=eygle)))

　　TNS : 监听程序尚未识别口令

　　注意此时在服务器端或客户端都需要我们通过密码来起停监听器 LSNRCTL> set password Password: The mand pleted successfully LSNRCTL> stop Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= )(PORT= ))) The mand pleted successfully LSNRCTL> start Starting /opt/oracle/product/ /bin/tnslsnr: please wait TNSLSNR for Linux: Version Production System parameter file is /opt/oracle/product/ /neork/admin/listener ora Log messages written to /opt/oracle/product/ /neork/log/listener log Trace information written to /opt/oracle/product/ /neork/trace/listener trc Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST= )(PORT= ))) Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST= )(PORT= ))) STATUS of the LISTENER Alias LISTENER Version TNSLSNR for Linux: Version Production Start Date NOV : : Uptime days hr min sec Trace Level support Security ON SNMP OFF Listener Parameter File /opt/oracle/product/ /neork/admin/listener ora Listener Log File /opt/oracle/product/ /neork/log/listener log Listener Trace File /opt/oracle/product/ /neork/trace/listener trc Listening Endpoints Summary (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST= )(PORT= ))) Services Summary Service eygle has instance(s) Instance eygle status UNKNOWN has handler(s) for this service Service julia has instance(s) Instance eygle status UNKNOWN has handler(s) for this service The mand pleted successfully

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