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- *filter
- # 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
- COMMIT
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