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khamzat

•Created by khamzat on 12/11/2024 in #help

Can't authenticate via NTLM from Linux Kestrel hosted ASP.NET API to IIS hosted ASP.NET API

Hi! Context: I am trying to authenticate and do a request on an API that is hosted via IIS and that uses NTLM authentication (Active Directory Username and Password) The API im using to run the authentication + request is hosted on Red Hat Openshift (Linux) with Kestrel RUN apk add --no-cache krb5-libs krb5 I have downloaded some krb5 libs through my docker, but have no idea if these are correct.

public HttpResponseMessage CMImport(List<CMImport> Imports)
{
    var client = NTLMHttpClient();
    var result = client.PostAsJsonAsync(_config["CMImport:importurl"], Imports).Result;
    if (result.StatusCode == HttpStatusCode.Unauthorized)
    {
        foreach (var header in result.Headers)
        {
            Console.WriteLine($"{header.Key}: {string.Join(", ", header.Value)}");
        }
    }
    else
    {
        Console.WriteLine("Request succeeded.");
    }

    return result;
}

private HttpClient NTLMHttpClient()
{
    var credentials = new NetworkCredential(_config["CMImport:username"], _config["CMImport:password"]);
    var handler = new HttpClientHandler
    {
        Credentials = credentials,
        ServerCertificateCustomValidationCallback = (message, cert, chain, errors) => { return true; }
    };
    var client = new HttpClient(handler);
    return client;
}

public HttpResponseMessage CMImport(List<CMImport> Imports)
{
    var client = NTLMHttpClient();
    var result = client.PostAsJsonAsync(_config["CMImport:importurl"], Imports).Result;
    if (result.StatusCode == HttpStatusCode.Unauthorized)
    {
        foreach (var header in result.Headers)
        {
            Console.WriteLine($"{header.Key}: {string.Join(", ", header.Value)}");
        }
    }
    else
    {
        Console.WriteLine("Request succeeded.");
    }

    return result;
}

private HttpClient NTLMHttpClient()
{
    var credentials = new NetworkCredential(_config["CMImport:username"], _config["CMImport:password"]);
    var handler = new HttpClientHandler
    {
        Credentials = credentials,
        ServerCertificateCustomValidationCallback = (message, cert, chain, errors) => { return true; }
    };
    var client = new HttpClient(handler);
    return client;
}

Im getting 401 unauthorized here, and the response headers look like this: Transfer-Encoding: chunked Server: Microsoft-IIS/10.0 WWW-Authenticate: Negotiate, NTLM X-Powered-By: ASP.NET Date: Wed, 11 Dec 2024 11:57:56 GMT On a successful request, done from my computer to the IIS API in question, the response headers look like this: content-type: application/json; charset=utf-8 date: Tue,10 Dec 2024 12:25:31 GMT location: results persistent-auth: true server: Microsoft-IIS/10.0 transfer-encoding: chunked www-authenticate: Negotiate <insert token here> x-powered-by: ASP.NET anybody know what im doing wrong? i suspect its something to do with me hosting in linux but idk.

5 replies

CC#

•Created by khamzat on 10/16/2022 in #help

how do i parse json into a class?

if i get json data from an api i saw someone on youtube just paste it into vs2022 and it just creates a class with all the attributes im wondering what do i do after this so i can create a class from getting the data

29 replies

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