When working in a corporate context, you often get confronted with a corporate web proxy. This can become very annoying when working with various command-line tools that have issues with the authentication part of that web proxy.
Luckily, Cntlm can remove that friction by running a local proxy without authentication, that authenticates to the actual proxy for you.
- Download and install Cntlm: https://sourceforge.net/projects/cntlm/
It will install itself under”C:\Program Files (x86)\Cntlm”
- Edit “Cntlm.ini” and fill in your Username, Domain and Proxy. Remove the plain text password property and save the file.
- Use “cntlm -H” to generate a new password hash. Copy the PassNTMLv2 hash to the Cntlm.ini file.
- Start the Cntlm service using “net start cntlm”
- Now you can use your local proxy (without authentication) at http://localhost:3128/
You only need 4 properties in the Cntlm.ini file to get Cntlm running in a secure way:
Username testuser Domain corp-uk Proxy 10.0.0.41:8080 PassNTLMv2 <output from cntlm -H>