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Guide to the Secure Configuration of Anolis OS 23

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Nftables Base Chain Hooks

    The possible hooks which can be used to configure the base chain are: <code>ingress</code> (only in netdev family since Linux kernel 4.2, and inet ...
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  • Nftables Chain Names

    The rules in nftables are attached to chains. Unlike in iptables, there are no predefined chains like INPUT, OUTPUT, etc. Instead, to filter pack...
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  • Nftables Base Chain Policies

    This is the default verdict that will be applied to packets reaching the end of the chain (i.e, no more rules to be evaluated against). Currently ...
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  • Nftables Base Chain Priorities

    Each nftables base chain is assigned a priority that defines its ordering among other base chains, flowtables, and Netfilter internal operations a...
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  • Nftables Base Chain Types

    Base chains are those that are registered into the Netfilter hooks, i.e. these chains see packets flowing through the Linux TCP/IP stack. The poss...
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  • Nftables Families

    Netfilter enables filtering at multiple networking levels. With iptables there is a separate tool for each level: iptables, ip6tables, arptables, ...
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  • Nftables Master configuration file

    The file which contains top level configuration for nftables service, and with which, the service is started.
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  • Nftables Tables

    Tables in nftables hold chains. Each table only has one address family and only applies to packets of this family. Tables can have one of six fami...
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  • SuSEfirewall2

    The SuSEfirewall2 provides a managed firewall.
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  • Uncomplicated Firewall (ufw)

    The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the ip...
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