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listener set password

原创 Linux操作系统 作者:zhanglei_itput 时间:2009-02-27 16:49:13 0 删除 编辑

    为了数据库安全,防止别人关闭监听,大部分公司都建议将监听加密,操作步骤记录下来,方便以后查询:

转自:http://www.eygle.com/archives/2007/11/listener_security.html

Oracle的监听器一直以来都存在一个严重的安全问题,那就是:
如果不设置安全措施,那么能够访问的用户就可以远程关闭监听器。

类似如下操作:

D:\>lsnrctl stop eygle

LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 28-11月-2007 10:02:40

Copyright (c) 1991, 2006, Oracle.  All rights reserved.

正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.33.11)(PORT=1521))
(CONNECT_DATA=(SERVICE_NAME=eygle)))
命令执行成功


而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=172.16.33.11)(PORT=1521)))
28-NOV-2007 09:59:20 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=Administrator))(COMMAND=stop)
(ARGUMENTS=64)(SERVICE=eygle)(VERSION=169870080)) * stop * 0


这个问题由来已久,为了保证监听器的安全,最好为监听设置密码:

[oracle@jumper log]$ lsnrctl     

LSNRCTL for Linux: Version 9.2.0.4.0 - Production on 28-NOV-2007 10:18:17

Copyright (c) 1991, 2002, Oracle Corporation.  All rights reserved.

Welcome 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=172.16.33.11)(PORT=1521)))
Password changed for listener
The command completed successfully
LSNRCTL> set password
Password:
The command completed successfully
LSNRCTL> save_config
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.33.11)(PORT=1521)))
Saved LISTENER configuration parameters.
Listener Parameter File  /opt/oracle/product/9.2.0/network/admin/listener.ora
Old Parameter File  /opt/oracle/product/9.2.0/network/admin/listener.bak
The command completed successfully


设置密码之后,远程操作将会因确实密码而失败:

D:\>lsnrctl stop eygle

LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 28-11月-2007 10:22:57
Copyright (c) 1991, 2006, Oracle.  All rights reserved.

正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.33.11)
(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=eygle)))
TNS-01169: 监听程序尚未识别口令


此时在服务器端或客户端,都需要通过密码来起停监听器:

LSNRCTL> set password
Password:
The command completed successfully
LSNRCTL> stop
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.33.11)(PORT=1521)))
The command completed successfully
LSNRCTL> start
Starting /opt/oracle/product/9.2.0/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 9.2.0.4.0 - Production
System parameter file is /opt/oracle/product/9.2.0/network/admin/listener.ora
Log messages written to /opt/oracle/product/9.2.0/network/log/listener.log
Trace information written to /opt/oracle/product/9.2.0/network/trace/listener.trc
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.33.11)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.33.11)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                    LISTENER
Version                  TNSLSNR for Linux: Version 9.2.0.4.0 - Production
Start Date                28-NOV-2007 10:22:23
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level              support
Security                  ON
SNMP                      OFF
Listener Parameter File  /opt/oracle/product/9.2.0/network/admin/listener.ora
Listener Log File        /opt/oracle/product/9.2.0/network/log/listener.log
Listener Trace File      /opt/oracle/product/9.2.0/network/trace/listener.trc
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.33.11)(PORT=1521)))
Services Summary...
Service "eygle" has 1 instance(s).
  Instance "eygle", status UNKNOWN, has 1 handler(s) for this service...
Service "julia" has 1 instance(s).
  Instance "eygle", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
备注:监听加密只对9i版本的数据库生效,在10g上做试验虽然已经往listener.ora 里面添加了
#----ADDED BY TNSLSNR 27-FEB-2009 16:55:56---
PASSWORDS_LISTENER_RAC1 = 80E31BA5A08D02A6
#--------------------------------------------但是,还是可以stop listener的。

 

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