What is enable DNS rebind protection?

Home networks hosting connected devices (like Google Nest speakers, home media servers, and Internet of Things devices) can be vulnerable to a type of attack known as DNS rebinding. To protect against these attacks, Google Wifi uses DNS rebinding protection, which blocks the use of private IP ranges by public domains.

What is DNS binding attack?

DNS rebinding is an exploit in which the attacker uses JavaScript in a malicious Web page to gain control of the victim’s router. The attack works on widely-used routers such as D-Link and Linksys and could, in fact, target any device that uses a default password and Web-based administration.

What is stop DNS rebind?

DNS rebinding is a method of manipulating resolution of domain names that is commonly used as a form of computer attack. This attack can be used to breach a private network by causing the victim’s web browser to access computers at private IP addresses and return the results to the attacker.

How DNS rebinding works?

DNS rebinding is a technique that turns a victim’s browser into a proxy for attacking private networks. Attackers can change the IP associated with a domain name after it has been used to load JavaScript. Since same-origin policy (SOP) is domain-based, the JavaScript will have access to the new IP.

Can I take over DNS?

Typically, this happens when the subdomain has a canonical name (CNAME) in the Domain Name System (DNS), but no host is providing content for it. An attacker can take over that subdomain by providing their own virtual host and then hosting their own content for it.

Why is Dnsmasq blocking a DNS rebind attack?

You can search on Google to understand what “DNS-rebind attack” means; and that’s why DNSmasq is blocking it for good reasons. But the option can also be turned off. It’s a private IP so you can’t ping it unless you have a private IP machine within your network using that address.

Is there a possible DNS rebind attack detected?

2020 Jun 22 08:14:33 dnsmasq warning [SYS.4] [SYS] possible DNS-rebind attack detected: servername (where servername is the name of the server at AkrutoSync that handles the request)

How to create wildcard subdomains with Dnsmasq?

I have a device that is already mapped to domain.tld. I now want to create a wildcard for all subdomains *.domain.tld so that they are mapped to the ip of domain.tld, too. How do I do this with dnsmasq?

Is there a possible DNS rebind attack on OpenWrt?

I’ve been using OpenWrt since March this year and never seen this appear in the logs before: daemon.warn dnsmasq[27408]: possible DNS-rebind attack detected: ucs02.engageya.com Just running a … Should I be concerned?