Test Form Authentication based ASP.Net WebServices using Postman

Hi created a web service (.asmx) with form based authentication. Code mentioned below. Can I test this service via Postman.

Below is my code.

    public class service1 : System.Web.Services.WebService
    {
        private string AuthenticateUser(string strUser, string strPassword)
        {
            return "Dummy";
        }

        [WebMethod]
        public bool Login(string strUser, string strPassword)
        {
            string strRole = AuthenticateUser(strUser, strPassword);
            if (strRole != null)
            {
                FormsAuthentication.SetAuthCookie(strUser, false);
                return true;
            }
            else
                return false;
        }

        [WebMethod]
        public void LogOut()
        {
            FormsAuthentication.SignOut();
        }

        [WebMethod]
        public string GetMethod()
        {
            string s = "Authenticated";
            return s;
        }
    }

Below is my web.config settings. 

<authentication mode="Forms">
    <forms name="MyAuthCookie" loginUrl="service1.asmx" protection="All" timeout="60" path="/"></forms>
</authentication>
<authorization>
    <deny users="?" />
</authorization>