Documentation Networking Beat

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== Networking ==
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This section contains information about networking changes in Fedora 10.
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== Consistent network device naming ==
  
=== Wireless Connection Sharing ===
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Fedora 18 continues previous releases' use of '''biosdevname''' to set network device names in a deterministic manner. Ethernet ports embedded on server motherboards will be named <code>em<port_number></code>, while ports on PCI cards will be named <code>p<slot_number>p<port_number></code>, corresponding to the chassis labels. This feature may be disabled by passing <code>"biosdevname=0"</code> on the kernel command line, in which case, behavior will revert to using ethX names.
  
The ''NetworkManager'' applet <code>nm-applet</code> has been updated to provide better connection sharing through the ''Create New Wireless Network'' menu item.
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== better network security with firewalld ==
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'''firewalld''' will be the default firewall solution for Fedora 18, replacing '''iptables'''.  Using '''firewalld'''will allow for application of policy changes without reloading, allowing connection states to stay unbroken when rules are changed.  
  
Connection sharing makes it possible to easily set up an ad-hoc WiFi network on a machine with a network connection and a spare wireless card. If the machine has a primary network connection (wired, 3G, second wireless card), routing is set up so that devices connected to the ad-hoc WiFi network can share the connection to the outside network.
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A D-BUS interface allows approved applications to communicate status and present complex or temporary needs to the firewall without requiring hand configuration by an administrator. This improves support for dynamic environments like libvirtd, which previously had to be restarted when iptables rules were changed.  
  
When you create a new WiFi network, you have to specify the name of the network and what kind of wireless security to use. NetworkManager then sets up the wireless card to work as an ad-hoc WiFi node that others can join. The routing will be set up between the new network and the primary network connection, and DHCP is used for assigning IP addresses on the new shared WiFi network. DNS queries are also forwarded to upstream nameservers transparently.
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Manual administration can be done with firewall-cmd. Documentation on firewalld can be found in the included manpages, firewall-cmd(1), firewalld(1), firewalld.conf(5), firewalld.icmptype(5), firewalld.service(5), firewalld.zone(5).
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== Team Driver improves NIC bonding ==
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Fedora 18 includes Team Driver which facilitates grouping of multiple network interfaces together so they act like a single network interface. This extends teaming possibilities provided by existing bonding driver. It also provides userspace driven, modular alternative to bonding driver. Usage information can be found in man teamd.conf(5), man teamd(8), and man teamdctl(8).
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== Bring your own hotspot ==
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NetworkManager now supports an enhanced Hotspot/Internet Connection Sharing mode for WiFi, which enables a much smoother connection sharing experience and is better supported by hardware. This mode is automatically enabled only for newly created connection to ensure existing configuration is unchanged.
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[[Category:Docs Project]]
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[[Category:Draft documentation]]
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[[Category:Documentation beats]]

Revision as of 15:58, 26 October 2012

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Contents

Consistent network device naming

Fedora 18 continues previous releases' use of biosdevname to set network device names in a deterministic manner. Ethernet ports embedded on server motherboards will be named em<port_number>, while ports on PCI cards will be named p<slot_number>p<port_number>, corresponding to the chassis labels. This feature may be disabled by passing "biosdevname=0" on the kernel command line, in which case, behavior will revert to using ethX names.

better network security with firewalld

firewalld will be the default firewall solution for Fedora 18, replacing iptables. Using firewalldwill allow for application of policy changes without reloading, allowing connection states to stay unbroken when rules are changed.

A D-BUS interface allows approved applications to communicate status and present complex or temporary needs to the firewall without requiring hand configuration by an administrator. This improves support for dynamic environments like libvirtd, which previously had to be restarted when iptables rules were changed.

Manual administration can be done with firewall-cmd. Documentation on firewalld can be found in the included manpages, firewall-cmd(1), firewalld(1), firewalld.conf(5), firewalld.icmptype(5), firewalld.service(5), firewalld.zone(5).

Team Driver improves NIC bonding

Fedora 18 includes Team Driver which facilitates grouping of multiple network interfaces together so they act like a single network interface. This extends teaming possibilities provided by existing bonding driver. It also provides userspace driven, modular alternative to bonding driver. Usage information can be found in man teamd.conf(5), man teamd(8), and man teamdctl(8).

Bring your own hotspot

NetworkManager now supports an enhanced Hotspot/Internet Connection Sharing mode for WiFi, which enables a much smoother connection sharing experience and is better supported by hardware. This mode is automatically enabled only for newly created connection to ensure existing configuration is unchanged.