一、目的：

配置数据库白名单策略，有效限制非法设备对数据库进行访问。

二、技术策略：

编辑sqlnet.ora文件

#开启ip限制功能

tcp.validnode_checking= yes

#允许访问数据库的IP地址列表，多个IP地址使用逗号分开

tcp.invited_nodes=(192.168.1.5，192.168.1.6，10.10.10.2)

#禁止访问数据库的IP地址列表，多个IP地址使用逗号分开

tcp.excluded_nodes=(192.168.1.1，10.10.10.1)

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：

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 | uniq

5

192.168.1.1

192.168.1.2

192.168.1.3

192.168.1.4

192.168.1.71

3.2 地址格式化

tr -s “\n” “,”

192.168.1.1,192.168.1.2,192.168.1.3,192.168.1.4,192.168.1.71

3.3 编辑sqlnet.ora

[oracle@TestDB /u01/app/oracle/product/11 .2.0 /db_1/network/admin ]$ cat sqlnet.ora

tcp.validnode_checking= yes

tcp.invited_nodes=(192.168.1.1,192.168.1.2,192.168.1.3,192.168.1.4,192.168.1.71)

3.4 关闭监听

[oracle@TestDB /u01/app/oracle/product/11 .2.0 /db_1/network/admin ]$lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 28-JUL-2020 19:30:20

Copyright © 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=TestDB)(PORT=1521)))

The command completed successfully

3.5 重新启动监听

[oracle@TestDB /u01/app/oracle/product/11 .2.0 /db_1/network/admin ]$lsnrctl start

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 28-JUL-2020 19:30:25

Copyright © 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 - Production

System parameter file is /u01/app/oracle/product/11 .2.0 /db_1/network/admin/listener .ora

Log messages written to /u01/app/oracle/diag/tnslsnr/TestDB/listener/alert/log .xml

Listening 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 LISTENER

Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production

Start Date 28-JUL-2020 19:30:25

Uptime 0 days 0 hr. 0 min. 0 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11 .2.0 /db_1/network/admin/listener .ora

Listener Log File /u01/app/oracle/diag/tnslsnr/TestDB/listener/alert/log .xml

Listening Endpoints Summary…

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=TestDB)(PORT=1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

The listener supports no services

The command completed successfully

3.6 手工注册监听

[oracle@TestDB /u01/app/oracle/product/11 .2.0 /db_1/network/admin ]$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Jul 28 19:30:29 2020

Copyright © 1982, 2013, Oracle. All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> alter system register;

System altered.

SQL> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 28-JUL-2020 19:30:36

Copyright © 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=TestDB)(PORT=1521)))

STATUS of the LISTENER

Alias LISTENER

Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production

Start Date 28-JUL-2020 19:30:25

Uptime 0 days 0 hr. 0 min. 11 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11 .2.0 /db_1/network/admin/listener .ora

Listener Log File /u01/app/oracle/diag/tnslsnr/TestDB/listener/alert/log .xml

Listening 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