![[预定]Linux Iptables Pocket Reference](http://img3m4.ddimg.cn/87/22/1164646284-1_l.jpg)
This pocket reference will help you at those critical moments when someone asks you to open or close a port in a hurry, either to enable some important traffic or to block an attack. Linux iptables Pocket Reference will keep the subtle syntax straight and help you remember all the values you have to enter in order to be as secure as possible. The listings of all options are divided into those suitable for firewalling, accounting, and NAT., Firewalls, Network Address Translation (NAT), network logging and accounting are all provided by Linux's Netfilter system, also known by the name of the command used to administer it, iptables . The iptables interface is the most sophisticated ever offered on Linux and makes Linux an extremely flexible system for any kind of network filtering you might do. Large sets of filtering rules can be grouped in ways that makes it easy to test them and turn them on and off. Do you watch for all types of ICMP traffic--some of them quite dangerous? Can you take advantage of state
