iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE The rule uses the NAT packet matching table ( -t nat ) and specifies the built-in POSTROUTING chain for NAT ( -A POSTROUTING ) on the firewall's external networking device ( -o eth0 ).
nat - iptables: Port forwarding with masquerading is not Chain PREROUTING (policy ACCEPT 1047K packets, 80M bytes) pkts bytes target prot opt in out source destination 5 232 DNAT tcp -- eth1 any anywhere anywhere multiport dports ssh to:192.168.1.250 1 60 DNAT tcp -- eth1 any anywhere anywhere tcp dpt:www to:192.168.1.99:80 0 0 DNAT tcp -- eth1 any anywhere anywhere multiport dports 9001,9030 to:192 NAT with Linux and iptables - Tutorial (Introduction) iptables: the command line utility for configuring the kernel-t nat : select table "nat" for configuration of NAT rules.-A POSTROUTING : Append a rule to the POSTROUTING chain (-A stands for "append").-o eth1 : this rule is valid for packets that leave on the second network interface (-o stands for "output")-j MASQUERADE Docker and iptables | Docker Documentation Docker and iptables Estimated reading time: 4 minutes On Linux, Docker manipulates iptables rules to provide network isolation. While this is an implementation detail and you should not modify the rules Docker inserts into your iptables policies, it does have some implications on what you need to do if you want to have your own policies in addition to those managed by Docker.
Iptables nat masquerade hides the address translation using iptables. Address translation is possible using iptables. There is an inbuilt nat table in iptables. It includes PREROUTING, OUTPUT, and POSTROUTING chains. In addition, the masquerade is a type of network address translation. This allows hosts on a private network to use the public IP.
How-To: Redirecting network traffic to a new IP using IPtables Dec 05, 2008
IP Masquerade is a networking function in Linux similar to the one-to-many (1:Many) NAT (Network Address Translation) servers found in many commercial firewalls and network routers. For example, if a Linux host is connected to the Internet via PPP, Ethernet, etc., the IP Masquerade feature allows other
## Masquerade everything out ppp0. # iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE 6.2 Destination NAT. This is done in the PREROUTING chain, just as the packet comes in; this means that anything else on the Linux box itself (routing, packet filtering) will … iptables - Wikipedia