Jan 15, 2002 · IPTables - DNAT, SNAT, port forwarding. Is it possible to port forward to LAN rather than a specific destination IP, i.e. port forward -> 192.168.0.0/24
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE (same as) iptables -t nat -A POSTROUTING -o ppp0 -j SNAT --to-source
DNAT, SNAT and Loadbalance Example - YouTube
Apr 20, 2018 · iptables \ -A PREROUTING # Append a rule to the PREROUTING chain -t nat # The PREROUTING chain is in the nat table -p tcp # Apply this rules only to tcp packets -d 192.168.1.1 # and only if the destination IP is 192.168.1.1 --dport 27017 # and only if the destination port is 27017 -j DNAT # Use the DNAT target --to-destination # Change the TCP and IP destination header 10.0.0.2:1234 # to 10.0 nat (DNAT) (routing decision) filter; security; nat (SNAT) IPTables Rules. Rules are placed within a specific chain of a specific table; Note: The table determines order of evaluation; A target is the action that are triggered when a packet meets the matching criteria of a rule. Targets Jan 15, 2002 · IPTables - DNAT, SNAT, port forwarding. Is it possible to port forward to LAN rather than a specific destination IP, i.e. port forward -> 192.168.0.0/24 # /sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE # /sbin/iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT # /sbin/iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT You should now be NATing. You can test this by pinging an external address from one of your internal hosts.
SNAT DNAT; Abbreviation for: Source NAT: Destination NAT: Terminology: SNAT changes the private IP address of the source host to public IP address. It may also change the source port in the TCP/UDP headers. SNAT is typically used by internal users to access the Internet. Destination NAT changes the destination address in IP header of a packet.
간단하지만 iptables의 DNAT, SNAT 기능을 모두 사용해볼 수 있는 예제를 설명해보려 한다. 4 . node01은 iptables 규칙을 설정해 놓은 VM이고, node02는 nginx 서버를 실행하고 있다.
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