iptables installed in centos 7 but nat table was not there

Question

[root@localhost yum.repos.d]# iptables --version

iptables v1.4.21

[root@localhost yum.repos.d]# iptables -L -t nat

iptables v1.4.21: can't initialize iptables table `nat': Table does not exist (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded.

I'm not sure if thats a duplicate here, I think it's just that centos 7 is running firewalld, see below — BeerSerc, Mar 07 '16 at 11:57

score 0 · Accepted Answer · answered Mar 07 '16 at 11:55

0

centos 7 uses firewalld by default.

See here for how to switch to iptables:

http://www.rayheffer.com/essential-linux-skills-with-centos-7-secure-firewall-with-iptables/

I guess the relevant lines to get the modules loaded which you are obviously missing is

# systemctl enable iptables
# systemctl enable ip6tables
# systemctl start iptables
# systemctl start ip6tables

answered Mar 07 '16 at 11:55

BeerSerc

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Yes you are correct now i can able to see the nat option in iptables. Thank you Very much. – Murugan Chandrasekar Mar 07 '16 at 13:57

iptables installed in centos 7 but nat table was not there

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