Shell Script Implementation Monitor iptables run State _linux shell

Recently in the debugging server iptables, oneself made a timed turn off iptables, but at night home rarely open a computer, so can not go to start iptables, of course, you may say, why not cancel timed shutdown iptables, I can only say that personal environment is not the same, the demand is not the same .

Script content:

VI iptables-reset.sh

Copy Code code as follows:

#!/bin/bash
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port= ' Iptables-vl|grep Ssh|awk ' {split ($NF, A, ":");p rint a[2]} ' |wc-l '
if [$port = 1];then
echo "ok!"
Else
/etc/init.d/iptables start
Sleep 2
port= ' Iptables-vl|grep Ssh|awk ' {split ($NF, A, ":");p rint a[2]} ' |wc-l '
if [$port = 1];then
echo "ok!"
Else
/etc/init.d/iptables restart
Fi
Fi

Validation diagram:

We can first test in the virtual machine, and then put on the server execution, of course, if you have a good server performance, you can change to a dead loop to detect.