IPv6 basic firewall

ip6tables -F
ip6tables -t mangle -F
ip6tables -X

ip6tables -P INPUT DROP
ip6tables -P OUTPUT ACCEPT
ip6tables -P FORWARD DROP

ip6tables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

ip6tables -I INPUT -p tcp --dport 22 -j ACCEPT
    #ssh (vlozi na !zacatek! retezu INPUT)

ip6tables -A INPUT -p icmp -j ACCEPT
ip6tables -A OUTPUT -p icmp -j ACCEPT
    #icmp

ip6tables -A INPUT -i lo -j ACCEPT
ip6tables -A OUTPUT -o lo -j ACCEPT
    #loopback

ip6tables -A INPUT -m state --state INVALID -j DROP
        #neplatne pakety zahodit

ip6tables -A INPUT -j REJECT