Forwarding Traffic To Particular IP using IPTABLES

Coding_Karma Source

I am dealing with 3 machines (VMs) :-

A :-172.20.10.1 (Client)

B :-172.20.10.2 (Original Server)

C:-172.20.10.5 (Redirect Server)

Now I want A to visit B and B to forward that to C.

I was able to achieve this by using :-

iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 172.20.10.5:80 iptables -t nat -A POSTROUTING -j MASQUERADE

But now I want to do this for one IP only (I.E) 172.20.10.1 to 172.20.10.5 when it tries to access 172.20.10.2 .. I have already tried The answer here.

and Yes net.ipv4.ip_forward = 1 is also set.

linuxnetworkingipiptables

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