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config NETFILTER_XT_MATCH_PORTSCAN
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tristate '"portscan" target support'
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depends on NETFILTER_XTABLES && NETFILTER_ADVANCED
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The portscan match allows to match on the basic types of nmap
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scans: Stealth Scan, SYN scan and connect scan. It can also match
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"grab-only" connections, i.e. where data flows in only one