一、背景:
2020年伊始,我们的工作中多了一个词"护网行动",之前闻所未闻;这是一个从国家层面提出的安全概念,目的是为了保障信息安全。各个组织机构会定期组织安防演练。咱们数据库层面为了应对这次安防演练也提出了自己的思想,数据库白名单策略限制非法设备对数据库进行访问。这是这次配置监听白名单的整个背景。
二、技术策略:
编辑sqlnet.ora文件
#开启ip限制功能
1 | tcp.validnode_checking=yes |
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#允许访问数据库的IP地址列表,多个IP地址使用逗号分开
1 | tcp.invited_nodes=(192.168.1.5,192.168.1.6,10.10.10.2) |
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#禁止访问数据库的IP地址列表,多个IP地址使用逗号分开
1 | tcp.excluded_nodes=(192.168.1.1,10.10.10.1) |
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注:
1、需要重启监听器生效。
2、这个方式只是适合TCP协议,适用于9i以上版本。在9i之前的版本使用文件protocol.ora。
3、第二行和第三行任写一行即可,如果tcp.invited_nodes与tcp.excluded_nodes都存在,以tcp.invited_nodes为主。
4、不要禁止服务器本机的IP地址,否则通过lsnrctl将不能启动或停止监听,因为该过程监听程序会通过本机的IP访问监听器。
三、操作步骤
3.1 从监听日志中获取层级访问的设备地址:
1234567 | grep HOST listener.log |awk -F 'HOST=' '{print $3}' |awk '{print $1}' |awk -F ')' '{print $1}' |grep -v jdbc|sort|uniq |wc -l && grep HOST listener.log |awk -F 'HOST=' '{print $3}' |awk '{print $1}' |awk -F ')' '{print $1}' |grep -v jdbc|sort|uniq5192.168.1.1192.168.1.2192.168.1.3192.168.1.4192.168.1.71 |
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3.2 地址格式化
12 | tr -s "\n" "," <ip.txt; echo192.168.1.1,192.168.1.2,192.168.1.3,192.168.1.4,192.168.1.71 |
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3.3 编辑sqlnet.ora
123 | [oracle@TestDB/u01/app/oracle/product/11.2.0/db_1/network/admin]$cat sqlnet.ora tcp.validnode_checking=yestcp.invited_nodes=(192.168.1.1,192.168.1.2,192.168.1.3,192.168.1.4,192.168.1.71) |
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3.4 关闭监听
12345 | [oracle@TestDB/u01/app/oracle/product/11.2.0/db_1/network/admin]$lsnrctl stopLSNRCTL for Linux: Version 11.2.0.4.0 - Production on 28-JUL-2020 19:30:20Copyright (c) 1991, 2013, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=TestDB)(PORT=1521)))The command completed successfully |
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3.5 重新启动监听
1234567891011121314151617181920212223242526 | [oracle@TestDB/u01/app/oracle/product/11.2.0/db_1/network/admin]$lsnrctl startLSNRCTL for Linux: Version 11.2.0.4.0 - Production on 28-JUL-2020 19:30:25Copyright (c) 1991, 2013, Oracle. All rights reserved.Starting /u01/app/oracle/product/11.2.0/db_1/bin/tnslsnr: please wait...TNSLSNR for Linux: Version 11.2.0.4.0 - ProductionSystem parameter file is /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.oraLog messages written to /u01/app/oracle/diag/tnslsnr/TestDB/listener/alert/log.xmlListening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=TestDB)(PORT=1521)))Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=TestDB)(PORT=1521)))STATUS of the LISTENER------------------------Alias LISTENERVersion TNSLSNR for Linux: Version 11.2.0.4.0 - ProductionStart Date 28-JUL-2020 19:30:25Uptime 0 days 0 hr. 0 min. 0 secTrace Level offSecurity ON: Local OS AuthenticationSNMP OFFListener Parameter File /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.oraListener Log File /u01/app/oracle/diag/tnslsnr/TestDB/listener/alert/log.xmlListening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=TestDB)(PORT=1521))) (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))The listener supports no servicesThe command completed successfully |
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3.6 手工注册监听
12345678910111213141516171819202122232425262728293031 | [oracle@TestDB/u01/app/oracle/product/11.2.0/db_1/network/admin]$sqlplus / as sysdbaSQL*Plus: Release 11.2.0.4.0 Production on Tue Jul 28 19:30:29 2020Copyright (c) 1982, 2013, Oracle. All rights reserved.Connected to:Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit ProductionWith the Partitioning, OLAP, Data Mining and Real Application Testing optionsSQL> alter system register;System altered.SQL> !lsnrctl statusLSNRCTL for Linux: Version 11.2.0.4.0 - Production on 28-JUL-2020 19:30:36Copyright (c) 1991, 2013, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=TestDB)(PORT=1521)))STATUS of the LISTENER------------------------Alias LISTENERVersion TNSLSNR for Linux: Version 11.2.0.4.0 - ProductionStart Date 28-JUL-2020 19:30:25Uptime 0 days 0 hr. 0 min. 11 secTrace Level offSecurity ON: Local OS AuthenticationSNMP OFFListener Parameter File /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.oraListener Log File /u01/app/oracle/diag/tnslsnr/TestDB/listener/alert/log.xmlListening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=TestDB)(PORT=1521))) (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))Services Summary...Service "ORCL" has 1 instance(s). Instance "ORCL1", status READY, has 1 handler(s) for this service...Service "ORCL1XDB" has 1 instance(s).The command completed successfully |
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原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。