cntlm
Fast NTLM authentication proxy with tunneling
uncategorizedRed Team
TooluncategorizedredLinuxKali LinuxPlatforms: Linux · Last verified September 6, 2026
Cntlm is a fast and efficient NTLM proxy, with support for TCP/IP tunneling, authenticated connection caching, ACLs, proper daemon logging and behaviour and much more. It has up to ten times faster responses than similar NTLM proxies, while using by orders or magnitude less RAM and CPU. Manual page contains detailed information.
Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.
Getting started
Install on Kali Linux with `sudo apt install cntlm`. See the official Kali tool page and upstream homepage linked above for full usage and configuration details.
