December 2006
Intermediate to advanced
202 pages
8h 29m
English
Content preview from Linux Kernel in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Networking
Networking is required for almost all machines today, and Linux supports almost every networking option available. Here we are going to show only a few of the wide variety that are present.
For all networking options, including different drivers, the main network configuration option must be enabled:
Networking
[*] Networking supportThe TCP/IP option should also be selected so that the machine can talk to other machines on the Internet:
Networking
[*] Networking support
Networking options
[*] TCP/IP networkingNetfilter
The Netfilter portion of the Linux kernel is a framework for filtering and manipulating all network packets that pass through the machine. It is commonly used if you wish to enable a firewall on the machine to protect it from different systems on the Internet, or to use the machine as a proxy for other machines on the network. For more details on what Netfilter is good for, please see NETFILTER.
To enable the main Netfilter option:
Networking
[*] Networking support
Networking options
[*] Network packet filtering (replaces ipchains)It is recommended that you enable the Netfilter netlink interface and Xtables support when using netlink:
Networking
[*] Networking support
Networking options
[*] Network packet filtering (replaces ipchains)
Core Netfilter Configuration
[*] Netfilter netlink interface
[*] Netfilter Xtables support (required for ip_tables)The different protocols that you wish to filter should also be selected:
Networking [*] Networking support Networking ...
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