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Ryan Bair
Asked: 2018-09-07 16:38:10 +0800 CST

iptables translate multicast to unicast

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I'm attempting to translate multicast traffic to unicast to send over the Internet.

I enabled ip forwarding and tried using the following rule:

iptables -t nat -A PREROUTING -i eth0 -d 239.0.0.0 -j DNAT --to-destination 192.0.2.1

However, the traffic is never sent out.

Is there someway to do what I'm attempting without setting up a tunnel?

iptables

1 Answers

  1. In a word, no. ?

    Unfortunately Multicast is a bit special.

    You also won't likely have much success passing it over an IPsec VPN tunnel.

    However your best bet would be to use a GRE tunnel and if you need security you can pass the GRE tunnel through an IPsec tunnel.

    A nice guide on setting up GRE on Linux : here

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