Linux下ebtables和iptables

ebtables

Ebtables has three tables: filter, nat and broute.

• The broute table has the BROUTING chain.
• The filter table has the FORWARD, INPUT and OUTPUT chains.
• The nat table has the PREROUTING, OUTPUT and POSTROUTING chains.

 iptables

Tables↓/Chains→	PREROUTING	INPUT	FORWARD	OUTPUT	POSTROUTING
(routing decision)				✓
raw	✓			✓
(connection tracking enabled)	✓			✓
mangle	✓	✓	✓	✓	✓
nat (DNAT)	✓			✓
(routing decision)	✓			✓
filter		✓	✓	✓
security		✓	✓	✓
nat (SNAT)		✓			✓