Hey everyone! I'm a bit puzzled about DNS tunneling. From what I've gathered, it seems like the client sends DNS queries to a server, and somehow an attacker can intercept this information and embed malicious commands within the requests. But honestly, it all sounds pretty confusing to me. Can someone break it down in simpler terms? Thanks!
1 Answer
Sure thing! DNS tunneling takes advantage of the fact that DNS traffic often isn't closely monitored by firewalls. So, if there's malware on a machine, it might need to send or receive commands to its 'controller.' Instead of using typical ports that could get blocked, the malware can send DNS queries to a domain it controls, like malicious.software.com, and use the responses to get commands through requests. These requests can include commands embedded in the DNS query responses. It's sneaky because most security measures don't pay much attention to DNS traffic!
That sounds kind of useful for bypassing security measures, right? I once heard it could help get around hotel Wi-Fi charges without paying!