Tunneling Data and Commands Over DNS to Bypass Firewalls
Jan 12, 2016 · This DNS tunnel tool named dnscat2 creates an encrypted tunnel over the DNS protocol primarily as a command-and-control (C&C) channel for penetration testers as outbound DNS is rarely blocked in networks. This makes it a very effective tunnel out of almost every network. Overview dnscat2 comes in two parts: the client and the server. The client is designed to be run on a compromised machine Oct 16, 2016 · What is DNS tunneling? Learning Happy Hour Quick Shot - Duration: 2:19. Palo Alto Networks LIVEcommunity 703 views. Any Windows OS - Duration: 9:23. Chris Piedra 588,699 views. DNS tunneling, is the ability to encode the data of other programs or protocols in DNS queries and responses. The concept of DNS tunneling was originally designed as a simple way to bypass the captive portals at the network edge. But as with many things on the Web, it is often used for nefarious purposes. DNS tunneling is a misuse of DNS. Domain Name Servers (DNS) have been called the internet’s equivalent of a phone book. Rather than remembering an IP address with up to twelve digits, you just need to know the domain name associated with the IP address. Even with IPv6 fully disabled it still doens't work when split tunneling is enabled. Windows 10 keeps using my ISP's DNS server in that case, where Windows 8.1 would use my company's DNS server regardless of the split tunneling option. The parallel DNS queries seem to be only part of the problem. Most domains can be resolved by DNS server without any issue, but for the DNS tunneling domain, (in our setup, I am using a fake domain, dns2tcp.tunnel.srt.blox), the DNS server cannot resolve them and will forward the request to the DNS2TCP server (the IP address is 192.168.212.81).
The user was trying to connect to his VPN at our remote site. He uses Windows 7 and a split-tunneling VPN and has connected with no problems many times before. He connected successfully but no DNS. I try rebooting the computer, renewing the IP addresses (w ipconfig /renew, ipconfig /release), flushing the dns…
Detecting DNS Tunneling SANS.edu Graduate Student Research by Greg Farnham - March 19, 2013 . Web browsing and email use the important protocol, the Domain Name System (DNS), which allows applications to function using names, such as example.com, instead of hard-to-remember IP addresses. Most of the other DNS Tunneling tools focus on tunneling TCP traffic using DNS, but this tool is different. DNScat2  is designed to create an encrypted command and control channel over the DNS. It borrows some concepts from Metasploit’s handler and is made with ease of use in mind. Nov 22, 2019 · DNS tunneling is a non standard solution to exchange data using the DNS protocol. It can be used to extract data silently or to establish a communication channel with an external malicious server in the case of a Command and Control (C&C) exchange. Other systems: Windows, Mac OS X, Unix, Linux & Docker The VPN-over-DNS Windows and Mac OS X versions are named the Value Pack and both are available for free for our Android users: to install a DNS VPN client on your Windows laptop, click here, and on your Mac OS X laptop, click here. The Value Pack is based exactly on the same code than the
How to tunnel Internet traffic over SSH in Windows using free software This is a basic guide to SSH dynamic port forwarding. It is intended as an introduction to this technology for intermediate to advanced computer users in the hopes that it will be useful.
Jan 23, 2018 What's new in networking | Microsoft® Docs Improved Windows PowerShell Support. New Windows PowerShell cmdlets are available for DNS Server. For more information, see What's New in DNS Server in Windows Server 2016. GRE Tunneling. RAS Gateway now supports high availability Generic Routing Encapsulation (GRE) tunnels for site to site connections and M+N redundancy of gateways.