When iptables is restarted, the system prompts security raw nat mangle fi error.

This is found when iptables is restarted under Linode. The complete error message is Setting chains to policy ACCEPT: security raw nat mangle fi [FAILED].

It is known that ip_conntrack_netbios_ns is used to configure the netbios protocol to traverse NAT. We do not need to configure it at present. just edit the relevant file and comment it out.

Error message:

I. editing files

Vi/etc/sysconfig/iptables-config

Ii. Make the comment invalid

Find the following content:

# Stored in/etc/modprobe. conf. IPTABLES_MODULES = "ip_conntrack_netbios_ns"

And note:

# Stored in/etc/modprobe. conf. # IPTABLES_MODULES = "ip_conntrack_netbios_ns"

3. Restart iptables

Service iptables restart