Sign up ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

I need to know the general usage of NETMAP which is used in iptables command(linux's debian OS). Is NETMAP used in place of other NAT such as SNAT or DNAT or MASQ ????

What is the relation of NETMAP to firewall??



share|improve this question

1 Answer 1

NETMAP is a NAT target like SNAT or DNAT, but not MASQ. NETMAP builds a big one-to-one translation for an entire subnet.

iptables -v -t nat -A PREROUTING -d -j NETMAP --to
# translations. -    -    -    -
192.168.1....  - 10.1.2....  -
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.