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Asked: 2015-09-15 11:44:35 +0800 CST

How to filter local traffic with iptables?

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Can iptables be used to filter local traffic?

I am confused by how this should be set up. For example, here is a diagram of how I picture the set up would be:

Setup

I just don't see how iptables would be able to intercept data that is not going to it. Any advice would be appreciated.

networking

1 Answers

  1. Best Answer

    Assuming that you're using a Layer 2 switch, there is no way for the Linux server to filter anything. If you have a Layer 3 switch, you could put each Machine in its own VLAN/subnet and then force all of the data to be routed through the linux server but honestly, that's quite messy.

    What is your use case here?

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