Rewrite these iptables rules into Firewalld.

[Jason Long]

Hello,
I want to conver below iptables to the Firewalld rules and I'm thankful if anyone help me:
[code]
#  Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
-A INPUT -i lo -j ACCEPT
-A INPUT -d 127.0.0.0/8 -j REJECT

#  Accept all established inbound connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

#  Allow all outbound traffic - you can modify this to only allow certain traffic
-A OUTPUT -j ACCEPT

#  Allow HTTP and HTTPS connections from anywhere (the normal ports for websites and SSL).
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 443 -j ACCEPT

#  Allow SSH connections
#
#  The -dport number should be the same port number you set in sshd_config
#
-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT

#  Allow ping
-A INPUT -p icmp -j ACCEPT

#  Log iptables denied calls
-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7

#  Drop all other inbound - default deny unless explicitly allowed policy
-A INPUT -j DROP
-A FORWARD -j DROP
[/code]

Thank you.

[Eric Garver]

On Sat, Aug 08, 2020 at 08:40:11AM -0000, Jason Long wrote:
> Hello,
> I want to conver below iptables to the Firewalld rules and I'm thankful if anyone help me:

A lot of what your have below already exists in firewalld either through
the default rule set or by adding services/ports/etc. See inline for
details.
> [code]
> #  Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
> -A INPUT -i lo -j ACCEPT

Already present in the default rule set. No action needed.
> -A INPUT -d 127.0.0.0/8 -j REJECT

Not explicit, but it be handled by catch all reject in the INPUT chain.
> #  Accept all established inbound connections
> -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

Already present in the default rule set. No action needed.
> #  Allow all outbound traffic - you can modify this to only allow certain traffic
> -A OUTPUT -j ACCEPT

Already present in the default rule set. No action needed.
> #  Allow HTTP and HTTPS connections from anywhere (the normal ports for websites and SSL).
> -A INPUT -p tcp --dport 80 -j ACCEPT
> -A INPUT -p tcp --dport 443 -j ACCEPT

# firewall-cmd --add-service http
    # firewall-cmd --add-service https
> #  Allow SSH connections
> #
> #  The -dport number should be the same port number you set in sshd_config
> #
> -A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT

# firewall-cmd --add-service ssh
> #  Allow ping
> -A INPUT -p icmp -j ACCEPT

Already present in the default zone (public) or any other zone that uses
--set-target=default or --set-target=ACCEPT.
> #  Log iptables denied calls
> -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7

# firewall-cmd --set-log-denied=all
> #  Drop all other inbound - default deny unless explicitly allowed policy
> -A INPUT -j DROP
> -A FORWARD -j DROP

Already present in the default rule set. No action needed.