[Oracle] 如何使用触发器实现IP限制用户登录

  • A+
所属分类:oracle


下面是一个触发器的例子:

复制代码 代码如下:

create or replace trigger logon_ip_control
after logon on database
declare
  ip STRING(30);
  user STRING(30);
begin
SELECT SYS_CONTEXT('USERENV','SESSION_USER') into user from dual;
SELECT SYS_CONTEXT('USERENV','IP_ADDRESS') into ip from dual;
if user='EPAY_USER'
  THEN
      IF ip not in ('192.168.219.20','192.168.219.22') 
      THEN raise_application_error(-20001,'User '||user||' is not allowed to connect from '||ip);
      END IF;
END IF;
end;
/


该触发器对用户EPAY_USER进行了IP限制(只允许'192.168.219.20','192.168.219.22',如果需要设置IP段,用%或?代替即可,如'192.168.219.%‘)。
下面看几个例子测试一下:
1)从非允许IP地址登陆 (192.168.219.21),连接失败

复制代码 代码如下:

[[email protected] ~]$ sqlplus [email protected]
SQL*Plus: Release 11.2.0.3.0 Production on Wed Jul 3 19:23:48 2013
Copyright (c) 1982, 2011, Oracle.  All rights reserved.
Enter password:
ERROR:
ORA-00604: error occurred at recursive SQL level 1
ORA-20001: User EPAY_USER is not allowed to connect from 192.168.219.21
ORA-06512: at line 10


2)从允许IP地址登陆(192.168.219.22),连接成功

复制代码 代码如下:

[[email protected] ~]$ sqlplus epay_user
SQL*Plus: Release 11.2.0.3.0 Production on Wed Jul 3 11:24:25 2013
Copyright (c) 1982, 2011, Oracle.  All rights reserved.
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options


3)从本地登陆(192.168.219.23)不受IP限制影响,连接成功

复制代码 代码如下:

[[email protected] ~]$ sqlplus epay_user
SQL*Plus: Release 11.2.0.3.0 Production on Wed Jul 3 11:24:25 2013
Copyright (c) 1982, 2011, Oracle.  All rights reserved.
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options



  • 我的微信
  • 这是我的微信扫一扫
  • weinxin
  • 我的微信公众号
  • 我的微信公众号扫一扫
  • weinxin

发表评论

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen: