Добавил такую цепочку правил в iptbales
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 2020 -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 110 -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 25 -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 1194 -j ACCEPT
iptables -A INPUT -p udp -m state --state NEW -m udp --dport 1194 -j ACCEPT
iptables -A INPUT -s 192.168.137.2 -j ACCEPT
iptables -A INPUT -s 192.168.20.4 -j ACCEPT
iptables -A INPUT -s 192.168.20.5 -j ACCEPT
iptables -A INPUT -s 192.168.20.6 -j ACCEPT
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -p icmp -m icmp -j ACCEPT
iptables -A FORWARD -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT
iptables -A FORWARD -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
iptables -A FORWARD -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT
iptables -A FORWARD -p tcp -m state --state NEW -m tcp --dport 2020 -j ACCEPT
iptables -A FORWARD -p tcp -m state --state NEW -m tcp --dport 110 -j ACCEPT
iptables -t nat -A PREROUTING -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.20.4
iptables -t nat -A PREROUTING -p tcp -m tcp --dport 21 -j DNAT --to-destination 192.168.20.4
iptables -t nat -A PREROUTING -p tcp -m tcp --dport 2020 -j DNAT --to-destination 192.168.20.4
iptables -t nat -A PREROUTING -p tcp -m tcp --dport 110 -j DNAT --to-destination 192.168.20.5
iptables -A FORWARD -j REJECT --reject-with icmp-host-prohibited
iptables -A INPUT -j REJECT --reject-with icmp-host-prohibitedИ все работает. Но кога убераю из нее
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
То все блокируеться и ssh в том числе..
Помогите модорнизировать
20.5
20.4
20.6
Это нат пакетов с внешнего на внтурнеений.