• 设置Oracle tnslsnr监听器口令


    绿盟扫描提示引用程序脆弱账号  Oracle tnslsnr 监听器,加密主要为了防止监听被恶意远程关闭。关于这个安全问题的详细说明参见文字结尾转载的说明《Oracle的监听口令及监听器安全》

    主要用到以下几个命令:
    1)lsnrctl 进入监听模式;
    2)set password设置密码;
    3)change_password 修改密码;
    4)save_config 保存配置;
    5)exit 退出监听;
     
    #1:命令行输入: lsnrctl 回车
    C:Documents and SettingsAdministrator>lsnrctl
    LSNRCTL for 32-bit Windows: Version 9.2.0.1.0 - Production on 21-1月 -2018 09:33:30
    欢迎来到LSNRCTL,请键入"help"以获得信息。
     
    #2:输入 change_password 回车
    LSNRCTL> change_password
    Old password: # 输入原密码,空直接回车
    New password: # 输入新密码
    Reenter new password: # 重复输入新密码
    正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxx-94b9880xr5)(PORT=1521)))
    LISTENER的口令已更改
    命令执行成功
     
    #3:保存配置
    LSNRCTL> set password # 因为更改过密码,需要先设置新密码
    Password:
    命令执行成功
    LSNRCTL> save_config
    正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxx-94b9880xr5)(PORT=1521)))
    保存的LISTENER配置参数。
    监听器参数文件 E:oracleora92 etworkadminlistener.ora
    旧的参数文件E:oracleora92 etworkadminlistener.bak
    命令执行成功
     
    LSNRCTL> save_config # 如果没有设置密码保存,就会提示错误
    正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rdlg-94b9880xr5)(PORT=1521)))))
    TNS-01169: 监听器尚未识别口令
     
    #4:退出
    LSNRCTL> exit
     
    #5:验证
    打开文件 E:oracleora92 etworkadminlistener.ora
    新增一下内容
    #----ADDED BY TNSLSNR 21-1月 -2018 09:34:41---
    PASSWORDS_LISTENER = 6336EEA3D5E41DD9
    #---------------------------------------------
     
    Oracle的监听口令及监听器安全
    作者:eygle |English 【转载时请标明出处和作者信息】|【恩墨学院 OCM培训传DBA成功之道】
    链接: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
    
    
    此外,ADMIN_RESTRICTIONS参数也是一个重要的安全选项,我们可以在 listener.ora 文件中设置 ADMIN_RESTRICTIONS_<listener name> 为 ON,此后所有在运行时对监听器的修改都将被阻止,所有对监听器的修改都必须通过手工修改 listener.ora 文件来完成。
    
    关于监听器安全参考文档:
    Integrigy_Oracle_Listener_TNS_Security.pdf
    
    -The End-
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  • 原文地址:https://www.cnblogs.com/raym/p/10297393.html
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