"recent" match support

modulename: xt_recent.ko

configname: CONFIG_NETFILTER_XT_MATCH_RECENT

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>"recent" match support
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
This match is used for creating one or many lists of recently
used addresses and then matching against that/those list(s).

Short options are available by using 'iptables -m recent -h'
Official Website: <http://snowman.net/projects/ipt_recent/>

source code:
net/netfilter/xt_recent.c