iptables mangle and NAT notes
9 07 2008PREROUTING in nat table: DNAT, REDIRECT
POSTROUTING in nat table: SNAT/MASQUERADE
PREROUTING in mangle table: alter routing (e.g. source-based routing)
FORWARD in mangle table: traffic shaping for tc (flowid)
In MikroTik RouterOS, /ip firewall nat:
srcnat chain = PREROUTING
dstnat chain = POSTROUTING
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