xref: /curl/docs/cmdline-opts/ntlm.md (revision fe9f68fa)
1---
2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
3SPDX-License-Identifier: curl
4Long: ntlm
5Help: HTTP NTLM authentication
6Mutexed: basic negotiate digest anyauth
7Protocols: HTTP
8Requires: TLS
9Category: auth http
10Added: 7.10.6
11Multi: mutex
12See-also:
13  - proxy-ntlm
14Example:
15  - --ntlm -u user:password $URL
16---
17
18# `--ntlm`
19
20Use NTLM authentication. The NTLM authentication method was designed by
21Microsoft and is used by IIS web servers. It is a proprietary protocol,
22reverse-engineered by clever people and implemented in curl based on their
23efforts. This kind of behavior should not be endorsed, you should encourage
24everyone who uses NTLM to switch to a public and documented authentication
25method instead, such as Digest.
26
27If you want to enable NTLM for your proxy authentication, then use
28--proxy-ntlm.
29