58 lines
1.6 KiB
Bash
58 lines
1.6 KiB
Bash
#!/bin/bash
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#renommage des interfaces
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IFPUB=enp0s8
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IFINT=enp0s9
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iptables -F
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#iptables -F -t nat
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#bloquer tout
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iptables -P INPUT DROP
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iptables -P OUTPUT DROP
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iptables -P FORWARD ACCEPT
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iptables -A INPUT -i lo
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iptables -A OUTPUT -o lo
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#autorise l'acces SSH
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iptables -A INPUT -p tcp --dport 22 -j ACCEPT
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iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
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#Autorise les requete DNS en tant que client
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iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
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iptables -A INPUT -p udp --sport 53 -j ACCEPT
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iptables -A INPUT -p udp --dport 53 -j ACCEPT
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iptables -A OUTPUT -p udp --sport 53 -j ACCEPT
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#autorise isakmp
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iptables -A OUTPUT -p udp --dport 500 -j ACCEPT
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iptables -A INPUT -p udp --sport 500 -j ACCEPT
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iptables -A INPUT -p udp --dport 500 -j ACCEPT
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iptables -A OUTPUT -p udp --sport 500 -j ACCEPT
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#autorise nat-t-ike
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iptables -A OUTPUT -p udp --dport 4500 -j ACCEPT
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iptables -A INPUT -p udp --sport 4500 -j ACCEPT
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iptables -A INPUT -p udp --dport 5500 -j ACCEPT
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iptables -A OUTPUT -p udp --sport 4500 -j ACCEPT
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# allow IPsec IKE negotiations
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#iptables -I INPUT -p udp --sport 500 --dport 500 -j ACCEPT
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#iptables -I OUTPUT -p udp --sport 500 --dport 500 -j ACCEPT
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# ESP encryption and authentication
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iptables -I INPUT -p 50 -j ACCEPT
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iptables -I OUTPUT -p 50 -j ACCEPT
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#autorise la supervision ( SNMP )
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iptables -A OUTPUT -p udp --dport 161 -j ACCEPT
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iptables -A INPUT -p udp --sport 161 -j ACCEPT
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#autorise NTP
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iptables -A OUTPUT -p udp --dport 123 -j ACCEPT
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iptables -A INPUT -p udp --sport 123 -j ACCEPT
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#autoriser les ping sauf de l'exterieur
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iptables -A INPUT -p icmp -m limit --limit 30/minute -j ACCEPT
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iptables -A OUTPUT -p icmp -j ACCEPT |