0

我想显示防火墙是否存在..如果未启用，用户应该收到警报..可以使用 python 代码完成吗？

4

2 回答 2

2

这是我在防火墙关闭的 Redhat 机器上执行的命令

[root@epmauto-165-253 ~]# service iptables status
iptables: Firewall is not running.
[root@epmauto-165-253 ~]#
[root@epmauto-165-253 ~]# python
Python 2.6.6 (r266:84292, May  1 2012, 13:52:17)
[GCC 4.4.6 20110731 (Red Hat 4.4.6-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> status = os.popen("service iptables status").read()
>>> print status
iptables: Firewall is not running.

>>>

当防火墙打开时，在不同的 redhat 机器上执行以下命令。

[root@blr-srm-auto157 ~]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination
1    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           state RELATED,ESTABLISHED
2    ACCEPT     icmp --  0.0.0.0/0            0.0.0.0/0
3    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0
4    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:22
5    REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination
1    REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination

[root@blr-srm-auto157 ~]# python
Python 2.6.6 (r266:84292, Apr 11 2011, 15:50:32)
[GCC 4.4.4 20100726 (Red Hat 4.4.4-13)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> status = os.popen('service iptables status').read()
>>> print status
Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination
1    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           state RELATED,ESTABLISHED
2    ACCEPT     icmp --  0.0.0.0/0            0.0.0.0/0
3    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0
4    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:22
5    REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination
1    REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination


>>>
于 2013-02-07T05:41:18.537 回答
0

在 GNU/linux 中，防火墙（netfilter）是内核的一部分，所以我认为如果 linux 开启，防火墙也是如此。接下来，你可能会问netfilter是否配置，是否有任何规则。为此，您可能会解析 iptables 命令（例如 iptables -L）的输出。

于 2013-02-07T05:42:18.910 回答