Black Box ACS120 Uživatelská příručka stáhnout pdf (Strana 157)

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Chapter 3 - Additional Features

User Guide 157

called when a rule which is matched by the packet points to the chain. Each table has a par-

ticular set of built-in chains:

for the filter table:

for the nat table:

Rule

Each chain has a sequence of rules. These rules contain:

When a chain is analyzed, the rules of this chain are reviewed one-by-one until the packet

matches one rule. If no rule is found, the default action for that chain will be taken.

Syntax

An iptables tutorial is beyond the scope of this manual. For more information on iptables, see

the iptables man page (not included with the BLACK BOX ® Advanced Console Server) or

the how-to: http://www.netfilter.org

or http://www.iptables.org

The syntax of the iptables command is:

iptables -command chain rule-specification [-t table][options]

iptables -E old-chain-name new-chain-name

where:

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 449 450

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