DNS (Domain Name System):
- DNS is like the phone book of the internet. It translates human-friendly domain names into computer-friendly IP addresses (like 192.168.1.1).
- This translation is crucial for your computer to find and connect to the right websites on the internet.
DNS Rebinding Attack:
- Nature of Attack:
- DNS rebinding is a sneaky computer attack.
- Imagine you visit a website innocently, but behind the scenes, a malicious web page tricks your browser into doing bad things.
- How it Works:
- The malicious website makes your web browser run a script (a series of computer commands).
- This script then attacks other machines on your network, possibly even those not directly connected to the internet.
- Challenge – Same-Origin Policy:
- Normally, a security rule called the same-origin policy stops scripts from one website accessing content from another website. It’s like a virtual fence to keep things safe.
- But DNS rebinding cleverly gets around this by misusing the Domain Name System.
- Role of Domain Names:
- Domain names are like addresses for websites.
- The attack tricks the browser into thinking it’s talking to the same website when, in reality, it’s talking to a different, malicious one.
- Impact on Private Networks:
- The attack can be used to sneak into private networks.
- For example, it might make your browser access computers at private IP addresses (like the ones your home devices use), and then send that info to the attacker.
- Potential Misuses:
- Once inside your network, the attacker can make your machine do harmful things like spamming, launching denial-of-service attacks, or other nasty activities.