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python requests ntlm authentication

Narkw Brahma

Narkw Brahma

• 1 min read

Python Requests NTLM Authentication

If you are working with a Microsoft Windows-based web server, you may encounter NTLM authentication when making requests to the API. NTLM is a Microsoft proprietary protocol used for authentication between clients and servers. In order to make requests with NTLM authentication in Python, you need to use the Requests library.

Here is an example of how to perform NTLM authentication with Requests:


import requests
from requests_ntlm import HttpNtlmAuth

url = 'https://example.com/api'
username = 'your_username'
password = 'your_password'
response = requests.get(url, auth=HttpNtlmAuth(username, password))
print(response.text)

In this example, we first import the Requests library and the HttpNtlmAuth class from requests_ntlm. We then define the URL of the API we want to access, as well as the username and password for the NTLM authentication.

We make a GET request to the API using the requests.get() function and pass in the URL and the HttpNtlmAuth object with our username and password. The response is stored in the response variable and we print the text content of the response using response.text.

If you are using a proxy server, you can also pass the HttpNtlmAuth object as the auth parameter to the proxies argument:


import requests
from requests_ntlm import HttpNtlmAuth

url = 'https://example.com/api'
username = 'your_username'
password = 'your_password'
proxies = {'https': 'http://your_proxy_server:port'}
response = requests.get(url, auth=HttpNtlmAuth(username, password), proxies=proxies)
print(response.text)

Here, we define the proxies dictionary with the URL of our proxy server and pass it as the proxies parameter to the requests.get() function.

Another way to perform NTLM authentication is by using the requests_negotiate_sspi library:


import requests
from requests_negotiate_sspi import HttpNegotiateAuth

url = 'https://example.com/api'
response = requests.get(url, auth=HttpNegotiateAuth())
print(response.text)

In this case, we import the HttpNegotiateAuth class from requests_negotiate_sspi and pass it as the auth parameter to the requests.get() function. This will perform NTLM authentication using the SSPI security package on Windows.

These are some ways to perform NTLM authentication in Python using the Requests library. Make sure you have the necessary libraries installed before running the code.

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