iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT \ --to 172.31.0.23:80 Cette règle spécifie que la table NAT utilise la chaîne intégrée PREROUTING pour retransmettre les requêtes HTTP entrantes exclusivement à l'adresse IP de destination listée de 172.31.0.23.
iptables -t nat -A PREROUTING -d 10.2.0.2 \ -j DNAT --to-destination 192.115.106.35 17 Automatic DNS DNAT setup. do iptables -t nat -A PREROUTING -d 10.2.0 iptables -t nat -L --line-numbers Chain PREROUTING (policy ACCEPT) num target prot opt source destination 1 DNAT udp -- anywhere anywhere udp dpt:snmptrap to:10.1.255.245:161 2 DNAT udp -- anywhere anywhere udp dpt:snmptrap to:10.1.255.245:161 3 DNAT udp -- anywhere anywhere udp dpt:snmptrap to:10.1.255.245:161 4 DNAT udp -- anywhere anywhere iptables -A FORWARD -i tap0 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -i eth0 -o tap0 -j ACCEPT # NAT for active/passive FTP. 192.168.178.21 would be your internal ftp server iptables -t nat -A PREROUTING -p tcp --dport 20-j DNAT --to 192.168.178.21: 20 iptables -t nat -A PREROUTING -p tcp --dport 21-j DNAT --to Jan 24, 2011 · This article is part of an ongoing iptables tutorial series. This is the 1st article in that series. This article explains how iptables is structured, and explains the fundamentals about iptables tables, chains and rules. On a high-level iptables might contain multiple tables. Tables might contain multiple chains. Chains can be built-in or user iptables에는 테이블의 하위 규칙 속성으로서 체인(Chain) 이라는 것이 존재한다. nat에는 아래의 체인을 사용해 규칙을 정의할 수 있다. PREROUTING (DNAT) : 패킷의 도착지(deatination) 주소를 변경한다. D(estination)NAT iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT \ --to 172.31.0.23:80 Cette règle spécifie que la table NAT utilise la chaîne intégrée PREROUTING pour retransmettre les requêtes HTTP entrantes exclusivement à l'adresse IP de destination listée de 172.31.0.23. $ iptables -t nat -A PREROUTING -d @pub -i eth0 -j DNAT --to-destination @priv Let's modify the table nat, append a rule to the pretrouting section : something is trying to reach @pub ? Let's put it in our input interface eth0, jump to the Destination Nat protocol, which tells us to send the packet to @priv.
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT \ --to 172.31.0.23:80 Cette règle spécifie que la table NAT utilise la chaîne intégrée PREROUTING pour retransmettre les requêtes HTTP entrantes exclusivement à l'adresse IP de destination listée de 172.31.0.23.
Feb 01, 2010
iptables -t filter -S iptables -t nat -S iptables -t mangle -S If the firewalld does it job, then you should see familiar rules within the -t nat and in forwarding chains within -t filter. Fascinating.
Dec 28, 2019 · # iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j DNAT --to 192.168.1.2:8080 # iptables -A FORWARD -p tcp -d 192.168.1.2 --dport 8080 -j ACCEPT These two rules are straight forward. The first one specifies that all incoming tcp connections to port 80 should be sent to port 8080 of the internal machine 192.168.1.2. iptables -t nat -A PREROUTING -d 10.2.0.2 \ -j DNAT --to-destination 192.115.106.35 17 Automatic DNS DNAT setup. do iptables -t nat -A PREROUTING -d 10.2.0 iptables -t nat -L --line-numbers Chain PREROUTING (policy ACCEPT) num target prot opt source destination 1 DNAT udp -- anywhere anywhere udp dpt:snmptrap to:10.1.255.245:161 2 DNAT udp -- anywhere anywhere udp dpt:snmptrap to:10.1.255.245:161 3 DNAT udp -- anywhere anywhere udp dpt:snmptrap to:10.1.255.245:161 4 DNAT udp -- anywhere anywhere iptables -A FORWARD -i tap0 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -i eth0 -o tap0 -j ACCEPT # NAT for active/passive FTP. 192.168.178.21 would be your internal ftp server iptables -t nat -A PREROUTING -p tcp --dport 20-j DNAT --to 192.168.178.21: 20 iptables -t nat -A PREROUTING -p tcp --dport 21-j DNAT --to