Disable the Firewall

*The following commands must be executed for each node.

In this section we will disable the appropriate firewall services installed on the system that may include firewalld, SuSEfirewall2, iptables and nftables to install LifeKeeper for Linux. The firewall can be left active but the ports required by LifeKeeper and the application you are protecting will have to be configured (not shown here).

Steps to Disable firewalld

Disable firewalld using the following steps.

1. Check the current status by running the following command.

systemctl status firewalld

!If the output is “Unit firewalld.service could not be found.” (indicating that firewalld is not installed), steps 2 and 3 can be skipped.

2. Stop and disable firewalld by running the following commands.

systemctl stop firewalld
systemctl disable firewalld
systemctl mask firewalld

3. Check the current status by running the following command

systemctl status firewalld

The output should contain “Loaded: masked” and “Active: inactive”.

Steps to Disable SuSEfirewall2

Disable SuSEfirewall2 using the following steps.

1. Check the current status by running the following command.

systemctl status SuSEfirewall2

!If the output is “Unit SuSEfirewall2.service could not be found.” (indicating that SuSEfirewall2 is not installed), steps 2 and 3 can be skipped.

2. Stop and disable SuSEfirewall2 by running the following commands

systemctl stop SuSEfirewall2
systemctl disable SuSEfirewall2
systemctl mask SuSEfirewall2

3. Check the current status by running the following command.

systemctl status SuSEfirewall2

The output should contain “Loaded: masked” and “Active: inactive”.

Steps to Disable iptables

Disable iptables using the following steps.

1. Check the current status by running the following command.

systemctl status iptables

!If the output is “Unit iptables.service could not be found.” (indicating that iptables is not installed), steps 2 and 3 can be skipped.

2. Stop and disable iptables by running the following commands

systemctl stop iptables
systemctl disable iptables
systemctl mask iptables

3. Check the current status by running the following command

systemctl status iptables

The output should contain “Loaded: masked” and “Active: inactive”.

Steps to Disable nftables

Disable nftables using the following steps.

1. Check the current status by running the following command.

systemctl status nftables

!If the output is “Unit nftables.service could not be found.” (indicating that nftables is not installed), steps 2 and 3 can be skipped.

2. Stop and disable nftables by running the following commands.

systemctl stop nftables
systemctl disable nftables
systemctl mask nftables

3. Check the current status by running the following command.

systemctl status nftables

The output should contain “Loaded: masked” and “Active: inactive”.