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@dmourati and @diegows by now answered your first question, so I'll tackle your next query. And bonus query. And that i'll also throw in the reward idea ;)

krisFRkrisFR 13.6k44 gold badges3838 silver badges4242 bronze badges 9 2 Terrific issue with terrific remedy. Another use-scenario this is useful for is that if you need to quickly redirect every one of the targeted traffic coming to at least one company, say squid, to a different ip/port in order to perform some maintenance on original services with no must reconfigure every one of the shoppers! Quite helpful!

The command iptables no longer recognizes Among the most commonly applied choices when defining policies: --dport.

It's also possible to prefer to ignore NAT entirely rather than consider to unravel the challenge on MAC or IP layer. You can go all the way up towards the HTTP layer and search for an answer there. In that case the answer you'll find is an HTTP proxy. If you put in an HTTP proxy on 192.

Why does acetylene, getting an unsaturated hydrocarbon, melt away with a thoroughly clean blue flame when employed for welding?

Why does acetylene, staying an unsaturated hydrocarbon, burn by using a cleanse blue flame when used for welding?

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Could it be satisfactory to on a regular basis check with a professor concerns from the training course textbook reference even further than the system content?

An additional achievable Remedy is that you are forgetting to operate as root. I just bumped into this when using the debian tutorial

From my practical experience, working with all hardly ever labored with specifying a port. On the other hand, in lieu of having multiple procedures for various protocols, you may contemplate The principles in a distinct path. Produce rules based on the protocol after which you can make use of the multiports option to team some policies collectively.

These replies will never go in the host where your iptables rule is carrying out NAT, for this reason the packets in a single way are translated, but packets in the other direction usually are not.

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Port forwarding will not get taken care of from the INPUT chain, so you don't have to open the port while in the Enter chain. It does get taken care of from the FORWARD chain, while. Be mindful on that.