Auto Login with Active Directory Account in C # ASP.Net Website

Question

We have a website that can be used as an intranet for employees and the Internet for external users. All of our employee accounts are in Active Directory. Therefore, when internal employees look at the URL (for example, http://app.abc.com ), they must be automatically signed up with their AD accounts.

However, for external users, they must use their username and password. I could easily do this part by simply looking at the database and doing authentication.

I would like to know how I could automatically subscribe AD users to a website.

Answer 1

Windows Windows ( AD).

http://msdn.microsoft.com/en-us/library/907hb5w9.aspx

, , ... . : http://msdn.microsoft.com/en-us/library/ms972958.aspx http://www.15seconds.com/issue/050203.htm

Answer 2

public bool Authenticate(string userName, string passwd)
        {
            //Domain .
            string domain = "YOUR_DOMAIN_NAME";
            string domainAndUsername = domain + @"\" + userName;
            //Path of Active Directory Entry e.g. path="LDAP://DC=onecity,DC=corp,DC=fabrikam,DC=com"; 
            DirectoryEntry entry = new DirectoryEntry(_path, domainAndUsername, passwd);

            try
            {
                //Bind to the native AdsObject to force authentication.
                object obj = entry.NativeObject;

                DirectorySearcher search = new DirectorySearcher(entry);

                search.Filter = "(SAMAccountName=" + userName + ")";
                search.PropertiesToLoad.Add("cn");
                SearchResult result = search.FindOne();

                if (null == result)
                {
                    return false;
                }

                //Update the new path to the user in the directory.
                _path = result.Path;
                _filterAttribute = (string)result.Properties["cn"][0];
            }
            catch (Exception ex)
            {

                PageLogger.AddToLogError("AUTH_ERROR", ex);
                return false;

            }

            return true;
        }

        private  string GetGroups()
        {
            DirectorySearcher search = new DirectorySearcher(_path);
            search.Filter = "(cn=" + _filterAttribute + ")";
            search.PropertiesToLoad.Add("memberOf");
            StringBuilder groupNames = new StringBuilder();

            try
            {
                SearchResult result = search.FindOne();
                int propertyCount = result.Properties["memberOf"].Count;
                string dn;
                int equalsIndex, commaIndex;

                for (int propertyCounter = 0; propertyCounter < propertyCount; propertyCounter++)
                {
                    dn = (string)result.Properties["memberOf"][propertyCounter];
                    equalsIndex = dn.IndexOf("=", 1);
                    commaIndex = dn.IndexOf(",", 1);
                    if (-1 == equalsIndex)
                    {
                        return null;
                    }
                    groupNames.Append(dn.Substring((equalsIndex + 1), (commaIndex - equalsIndex) - 1));
                    groupNames.Append("|");
                }
            }
            catch (Exception ex)
            {
                throw new Exception("Error obtaining group names. " + ex.Message);
            }
            return groupNames.ToString();
        }