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IPCHAINS
There are 3 chains:
- Input - what is allowed into this network interface
(protects you from the Internet)
- Forward - packets to forward
- Output - what is allowed out of this network interface
(protects the Internet from you(!) or your users)
Default policy:
- Accept - let it through the firewall
- Deny - drop it on the floor quietly
- Reject - drop it on the floor and notify originator
Notes: