3.2 Source address translation
- Source address translation is always done in last by the chain POSTROUTING
- routing and filtering see the packet unchanged
- Examples:
- #Change source addresses to 1.2.3.4.
iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 1.2.3.4
- # Masquerade tcp out eth0 using a range of source ports
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE -p tcp --to 2222-3333
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