Dynamic DNS

Now, one of the methods we'll discuss here is dynamic DNS. Let's say that the attacker IP is 1.1.1.1 on day 1. Then, the next day, we get an IP address of 2.2.2.2. Then, how would our target know the new IP address ? The answer is dynamic DNS (DDNS). It is a method to preserve a unique name for you on a DNS server. While the reserved name is fixed, the correlated IP address will change each time you change your public IP address. For demonstration, we will use noip.com. It provides a free dynamic DNS service. So I have previously preserved a name called pythonhussam.ddns.net. So on the target side, instead of hard-coding the IP address on that script, we will do a DNS lookup for this name; then we will retrieve the IP address to make the connection. Now, you're probably asking: When the attacker IP address changes, how does noip.com ...