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Allow all traffic coming from 192.168.0.100 to public zone.
firewall-cmd --add-source=192.168.0.100 --zone=public firewall-cmd --reload
firewall-cmd --add-source=192.168.0.100 --zone=public --permanent firewall-cmd --reload
firewall-cmd --allow-traffic=192.168.0.100 --zone=public firewall-cmd --reload
One of your client is getting blocked constantly by mistake. You've been asked to whitelist the IP address. Whitelisting IP address would allow any traffic from that IP without blocking it. Even if it's some kind of malicious network traffic. You have to specify zone while adding IP to whitelist. Otherwise it will get whitelisted to the default zone. Example command: firewall-cmd --add-source=192.168.168.125 --zone=public --permanent Example screenshot - http://prntscr.com/ghaupo
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