Configure Unbound DNS validating resolver. Determine device address. $ ip --brief address show eth0 eth0 UP 172.16.151.254/21 Update package index. $ apt update Upgrade packages. $ apt upgrade Install Dynamic Firewall Manager. $ sudo apt install firewalld Inspect initial setting for public zone. $ sudo firewall-cmd --list-all --zone public public target: default icmp-block-inversion: no interfaces: […]
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