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Paperback. Condizione: Good. Linux Firewalls by Robert L. Ziegler is the essential guide to mastering firewall configuration and network security using Linux. Whether you?re a system administrator protecting a business or a home user locking down your network, Ziegler walks you through the powerful world of iptables, demystifying packet filtering, NAT, and logging. With real-world examples, step-by-step instructions, and a clear, pragmatic style, this book gives you the tools to build a robust, flexible firewall solution from the ground up. Brought to you by Crappy Old Books ? where classic tech never dies, it just boots into runlevel 3.