IP Forwarding: Difference between revisions
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(Created page with "=External= * http://www.ducea.com/2006/08/01/how-to-enable-ip-forwarding-in-linux/ =Internal= * Linux Network Concepts echo 1 > /proc/...") |
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* [[Linux Network Concepts#Subjects|Linux Network Concepts]] | * [[Linux Network Concepts#Subjects|Linux Network Concepts]] | ||
=Overview= | |||
"IP forwarding" is a synonym for "routing." It is called "kernel IP forwarding" because it is implemented in the Linux kernel. | |||
A host that acts as a router has multiple network interfaces. If traffic comes in on one interface and its target subnet is serviced by another network interface, the kernel may forward the packet between interfaces, if it is configured to do so. | |||
<pre> | |||
echo 1 > /proc/sys/net/ipv4/ip_forward | echo 1 > /proc/sys/net/ipv4/ip_forward | ||
</pre> | |||
Revision as of 19:39, 21 March 2017
External
Internal
Overview
"IP forwarding" is a synonym for "routing." It is called "kernel IP forwarding" because it is implemented in the Linux kernel.
A host that acts as a router has multiple network interfaces. If traffic comes in on one interface and its target subnet is serviced by another network interface, the kernel may forward the packet between interfaces, if it is configured to do so.
echo 1 > /proc/sys/net/ipv4/ip_forward