OS X Connection Sharing Without The Control Panel

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Sometimes you need to enable connection sharing without touching the control panel. Here's how:

/usr/sbin/natd -interface en0 -use_sockets -same_ports -unregistered_only -dynamic -clamp_mss
/sbin/ipfw add 10 divert 8668 all from any to any via en0
/usr/sbin/sysctl -w net.inet.ip.forwarding=1

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