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- #ipv4
- iptables -P INPUT DROP
- iptables -A INPUT -i lo -p all -j ACCEPT
- iptables -A INPUT -p tcp -m tcp --dport 40 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
- iptables -A INPUT -p tcp --sport 80 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- iptables -A INPUT -p tcp --sport 443 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- iptables -A INPUT -p udp -m udp --dport 14443 -m conntrack --ctstate NEW -j ACCEPT
- iptables -A INPUT -p udp --sport 53 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- iptables -A INPUT -p tcp --sport 53 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- iptables -A INPUT -s 10.8.0.0/24 -p tcp -m tcp --dport 53 -m conntrack --ctstate NEW -j ACCEPT
- iptables -A INPUT -s 10.8.0.0/24 -p udp -m udp --dport 53 -m conntrack --ctstate NEW -j ACCEPT
- iptables -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
- iptables -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
- iptables -A FORWARD -i wg0 -o wg0 -m conntrack --ctstate NEW -j ACCEPT
- iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE
- iptables -A INPUT -j DROP
- iptables-save > /etc/iptables/rules.v4
- #ipv6
- ip6tables -P INPUT DROP
- ip6tables -A INPUT -i lo -p all -j ACCEPT
- ip6tables -A INPUT -p tcp -m tcp --dport 40 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
- ip6tables -A INPUT -p tcp --sport 80 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- ip6tables -A INPUT -p tcp --sport 443 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- ip6tables -A INPUT -p udp -m udp --dport 14443 -m conntrack --ctstate NEW -j ACCEPT
- ip6tables -A INPUT -p udp --sport 53 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- ip6tables -A INPUT -p tcp --sport 53 -m conntrack --ctstate ESTABLISHED -j ACCEPT
- ip6tables -A INPUT -s fd42:42:42:42::/112 -p tcp -m tcp --dport 53 -m conntrack --ctstate NEW -j ACCEPT
- ip6tables -A INPUT -s fd42:42:42:42::/112 -p udp -m udp --dport 53 -m conntrack --ctstate NEW -j ACCEPT
- ip6tables -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
- ip6tables -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
- ip6tables -A FORWARD -i wg0 -o wg0 -m conntrack --ctstate NEW -j ACCEPT
- ip6tables -t nat -A POSTROUTING -s fd42:42:42:42::/112 -o eth0 -j MASQUERADE
- ip6tables -A INPUT -j DROP
- iptables-save > /etc/iptables/rules.v6
- sed -i "s/eth0/$(route | grep '^default' | grep -o '[^ ]*$')/" /etc/iptables/rules.v4
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