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Source: [FirewallD: Allow connections only from certain IP addresses]
Do not use rich rules for this.
A firewalld zone corresponds to a set of services that you want to allow, and the sources of the traffic to those services.
Traffic sources can be designated in two ways: by interface, or by source IP address. Traffic that matches /any/ source passes this check.
Create a new zone for Kali Linux IP addresses:
sudo firewall-cmd --permanent --new-zone=kali sudo firewall-cmd --reload
Enable the services allow for kali zone:
sudo firewall-cmd --zone=kali --permanent --add-service=ssh sudo firewall-cmd --zone=kali --permanent --add-service=rsyncd sudo firewall-cmd --reload
Add the IP addresses allowed to reach the above services. Ensure there are no interfaces designated to this zone.
sudo firewall-cmd --zone=kali --permanent --add-source=<IPv4 addr 1> sudo firewall-cmd --zone=kali --permanent --add-source=<IPv6 addr> sudo firewall-cmd --zone=kali --permanent --add-source=<IPv4 addr 2> sudo firewall-cmd --zone=kali --permanent --add-source=<IPv4 addr 3> sudo firewall-cmd --reload
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