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How Do I Enable Ip Forwarding in Linux?

Sarah Jenkins • • 4 min read
How Do I Enable Ip Forwarding in Linux?
Contents

How do I set IP forwarding in Linux?

How to enable IP Forwarding in Linux

  1. Check if IP Forwarding is enabled. We have to query the sysctl kernel value net.ipv4.ip_forward to see if forwarding is enabled or not: Using sysctl: …
  2. Enable IP Forwarding on the fly. …
  3. Permanent setting using /etc/sysctl. …
  4. Using distribution specific init scripts.

How do I enable IP forwarding in Ubuntu?

Enable IP Forwarding on Ubuntu 13.04

  1. This howto guide outlines the steps to enable IP forwarding on Ubuntu 13.04. This is required if you want your system to act as a router. …
  2. Enable the kernel option for IP forwarding: $ sudo sysctl net.ipv4.ip_forward=1. …
  3. To make these changes perminant across reboots:
Sarah Jenkins
Author

Sarah Jenkins

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.