Comprehensive Guide to Port Redirection using Rinetd

Hello friends today we will discuss what is Port redirecting/ forwarding and necessary Steps for this technique for accessing network traffic through firewall restricted port.

First check out following things:

What is Port redirecting?

In computer networking, port forwarding/redirecting or port mapping is an application of network address translation (NAT) that redirects a communication request from one address and port number combination to another while the packets are traversing a network gateway, such as a router or firewall. This technique is most commonly used to make services on a host residing on a protected or masqueraded (internal) network available to hosts on the opposite side of the gateway (external network), by remapping the destination IP address and port number of the communication to an internal host.(From Wikipedia)

Why we need port redirection?

Suppose you are in your workplace where network admin has blocked all 65,535 ports in the network except port 80 and 443 for outgoing traffic. Now you want to access any service which is running on different port other than 80 and 443 but you are not allow to sent request packet on that port because port 80 and 443 are open ports in your network that can access web server only.

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