Which Linux kernel framework is the foundation of Linux firewall packet filtering?, Netfilter, UFW, Systemd, Firewalld, Which tool is described as the modern replacement for iptables?, Netfilter, UFW, SELinux, nftables, In Linux firewall architecture, which layer contains tools like iptables, nft, and ufw?, Boot Space, Root Layer, User Space, Kernel Space, Which action blocks traffic and sends a reply back to the source?, Allow, Reject, Drop, Monitor, Which firewall tool is mainly used on Ubuntu and is designed to be beginner-friendly?, iptables, UFW, Firewalld, nftables, What is a key limitation of iptables mentioned in the document?, Kernel removal, No rule chains, No IPv4 support, Complex syntax, Which Firewalld feature allows temporary firewall changes without saving them permanently?, Runtime config, Static chaining, Stateful logging, Packet mangling, What firewall feature tracks active network sessions?, Service masking, Port cloning, Connection tracking, Zone mapping, According to the document, which tool uses unified rule management and faster processing on large rule sets?, Firewalld, nftables, iptables, UFW, Which limitation of Linux firewalls is explicitly stated in the presentation?, Cannot stop phishing, Cannot block ports, Cannot filter packets, Cannot log traffic

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