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ubuntu:iptables_rules [2014/08/13 03:26] – dougubuntu:iptables_rules [2019/05/27 20:31] (current) – doug
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 Here's how I set up a firewall on a server. This is confirmed to work in Ubuntu 10.04, 12.04, and 14.04. Here's how I set up a firewall on a server. This is confirmed to work in Ubuntu 10.04, 12.04, and 14.04.
  
-First of all, ''sudo ''''iptables''''-L''''-n -v'' will probably show no rules. Right?+First of all, ''sudo ''''iptables ''''-L ''''-n ''''-v'' will probably show no rules. Right?
  
 Let's create some rules, starting with this template: Let's create some rules, starting with this template:
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 ''sudo vi /etc/network/if-pre-up.d/iptables'' ''sudo vi /etc/network/if-pre-up.d/iptables''
  
-Put the following into it:+Put the following into it (replace eth0 with the name of your network interface):
  
-<code>+<file>
 #!/bin/sh #!/bin/sh
-/sbin/iptables-restore </etc/iptables.rules +if [ "${IFACE}" = eth0 ]; then 
-</code>+    /sbin/iptables-restore < /etc/iptables.rules 
 +fi 
 +</file>
  
 Make it executable: Make it executable:
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 That should do the trick! Confirm that your firewall rules come up correctly on boot. That should do the trick! Confirm that your firewall rules come up correctly on boot.
 +
  
ubuntu/iptables_rules.1407900379.txt.gz · Last modified: by doug