# [Responder](https://github.com/lgandx/Responder) Responder is a poisoner which can be used to poison many different protocols including [[SMB]], Windows SQL Server, WebDav, LDAP, [[FTP]], POP3, IMAP, SMTP. It can also serve as a rogue DHCP server, that poisons DNS settings. ![[Responder Write-up#^hsckx1]] Kali comes with Responder preinstalled and can be run simply by calling `responder`. Otherwise you need to fetch the repo and call the script using `python3`. The interface Responder will listen on is configured using `-I`: ```sh responder -I <interface name e.g. tun0> ``` ## Hack The Box Machines - [[Responder Write-up|Responder]]