Package:Iptables
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Iptables
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iptables is a program used to configure and manage the kernels netfilter modules.
Installation
Kernel Settings
Under Netfilter--> set to all modules--> or all y--> prefer modules.:
-> Networking support
-> Networking options
-> Network packet filtering framework (Netfilter)
Emerge
root # emerge iptables
First Run
For some services such as sshguard & Fail2ban you need a generic running firewall. We will save a blank firewall rule set and start the firewall.
ipv4
root # rc-service iptables save root # rc-service iptables start
to start upon reboot
root # rc-update add iptables default
ipv6
root # rc-service ip6tables save root # rc-service ip6tables start
To make the service start upon system reboot, run:
root # rc-update add ip6tables default
Show firewall Rules & Status
ipv4
root # iptables -L -n
ipv6
root # ip6tables -L -n