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Accepted
Roy Hinkley
Asked: 2016-09-07 05:54:43 +0800 CST

How to save iptables configuration on Redhat Enterprise Server 7

  • 772

I have a Redhat server (Red Hat Enterprise Linux Server release 7.2 (Maipo)) that resets iptable rules on re/boot.

According to the version 6 documentation, I execute:

/sbin/service iptables save

which returns:

The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

If I understand the message correctly, I attempted the following:

sudo systemctl iptables save

which returns:

Unknown operation 'iptables'.

I cannot locate the version 7 documentation on saving ip tables specifically, but previous versions support the same command.

What command should I run to save iptables config?

For reference:

firewall d satatus:

systemctl status firewalld
firewalld.service
   Loaded: not-found (Reason: No such file or directory)
   Active: inactive (dead)
iptables rhel7

2 Answers

  1. Best Answer

    You should install iptables-services package.

    Then service iptables save will work. Also these commands will work too:

    # iptables-save > /etc/sysconfig/iptables
# ip6tables-save > /etc/sysconfig/ip6tables

    AFAIK, systemctl doesn't have any option to save iptables-services' configuration.

    Note: systemctl syntax is as follow : systemctl <operation> <unit>

    • 22

  2. Here is link to Security Guide for Red Hat 7: using_firewalls

    I use

    # cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.4 (Maipo)

    And status of firewalld service:

    # systemctl status firewalld
Active: active (running) since Fri 2018-04-13 10:00:18 CEST; 31min ago

    So I think, you could also enable firewalld service:

    systemctl start firewalld
systemctl enable firewalld

    And change rules via firewall-config

    1. Press Super
    2. Type firewall,
    3. Select Permanent in drop down menu
    4. Put necessary settings
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