user@laptop:~$ aptitude show ipset
Пакет: ipset
Новый: да
Состояние: не установлен
Версия: 2.5.0-1ubuntu1
Приоритет: дополнительный
Раздел: universe/net
Сопровождающий: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Размер в распакованном виде: 254 k
Зависимости: iptables, libc6 (>= 2.7)
Описание: administration tool for kernel IP sets
IP sets are a framework inside the Linux 2.4.x and 2.6.x kernel which can be
administered by the ipset(8) utility. Depending on the type, an IP set may
store IPv4 addresses, TCP/UDP port numbers, or IPv4 addresses with MAC
addresses in a way which ensures lightning speed when matching an entry against
a set.
If you want to
* store multiple IPv4 addresses or port numbers and match against the entire
collection using a single iptables rule;
* dynamically update iptables rules against IPv4 addresses or ports without
performance penalty;
* express complex IPv4 address and ports based rulesets with a single iptables
rule and benefit from the speed of IP sets;
then IP sets may be the proper tool for you.