How do I allow remote access to ELMAH?
The security element located beneath the elmah element provides a single attribute named allowRemoteAccess: As default, remote access to /elmah.axd isn't allowed meaning that requesting that URL on everything else than localhost, returns af HTTP status code 403.
How can I view the error log in ELMAH?
Moreover, ELMAH offers a built-in mechanism for viewing the error log and details about a specific error from a web page, elmah.axd. The elmah.axd page can also render error information as an RSS feed or as a comma-separated value file (CSV), which you can read using Microsoft Excel.
What is ELMAH?
This blog post is brought to you by elmah.io. elmah.io is error logging, uptime monitoring, deployment tracking, and service heartbeats for your .NET and JavaScript applications. Stop relying on your users to notify you when something is wrong or dig through hundreds of megabytes of log files spread across servers.
How do I add ELMAH to my website?
In a nutshell, it involves four simple steps: Download ELMAH and add the Elmah.dll assembly to your web application, Register ELMAH's HTTP Modules and Handler in Web.config, Specify ELMAH's configuration options, and Create the error log source infrastructure, if needed.
How do I check my Elmah log?
Build the application, run it in the browser, and navigate to http://www.yoursite.com/elmah.axd. You are prompted to log in before you see the content. After a successful authentication, you see a web page to remotely view the entire log of recorded exceptions.
What is Elmah Axd?
Description. ELMAH (Error Logging Modules and Handlers) is an application-wide error logging facility that is completely pluggable. It can be dynamically added to a running ASP.NET web application, or even all ASP.NET web applications on a machine, without any need for re-compilation or re-deployment.
How do you use Elmah?
How to use ELMAH?Create a new MVC application. On the File menu, click New >> Project. ... Install ELMAH Library and register its modules. Open NuGet Package Manager Console - ... Setup Mail Server for getting every log in email; add the below code in web. config. ... Store ELMAH logs on different locations.
What is Elmah logging?
ELMAH is a free, open source error logging library that includes features like error filtering and the ability to view the error log from a web page, as an RSS feed, or to download it as a comma-delimited file.
Is elmah.io free?
Absolutely! Everyone can try elmah.io completely free for 21 days, no credit card required.
How do I enable Elmah?
To turn on ELMAH, navigate to Administration » Settings » Advanced » System » UI Elmah Config. Select the IsElmahLoggingTurnedOn checkbox and click Save changes. Every time you change the selection of this checkbox, you must restart the application.
How do I add Elmah to Web API?
public static class WebApiConfig { public static void Register(HttpConfiguration config) { ... config. Services. Add(typeof(IExceptionLogger), new ElmahExceptionLogger()); ... } }...Further Reading :Elmah on code.google.com.Elmah. MVC 2.0. 2 on Nuget.Elmah. MVC on GitHub.
What does Elmah stand for?
ELMAH stands for Error Logging Modules and Handlers for ASP.NET and is the original and very successful open source project for logging errors from . NET web applications.
Where is ELMAH configuration?
ELMAH looks for its configuration options in the website's Web.config file in a custom configuration section named <elmah>. In order to use a custom section in Web.config it must first be defined in the <configSections> element. Open the Web.config file and add the following markup to the <configSections>:
What is elmah.dll?
While the Elmah.dll file contains the HTTP Modules and Handler needed to automatically log unhandled exceptions and to display error details from a web page , these must be explicitly registered in the web application's configuration. The ErrorLogModule HTTP Module, once registered, subscribes to the HttpApplication 's Error event. Whenever this event is raised the ErrorLogModule logs the details of the exception to a specified log source. We'll see how to define the log source provider in the next section, "Configuring ELMAH." The ErrorLogPageFactory HTTP Handler factory is responsible for generating the markup when viewing the error log from a web page.
What is ELMAH in production?
Error Logging Modules And Handlers (ELMAH) offers another approach to logging runtime errors in a production environment. ELMAH is a free, open source error logging library that includes features like error filtering and the ability to view the error log from a web page, as an RSS feed, or to download it as a comma-delimited file. This tutorial walks through downloading and configuring ELMAH.
What is ELMAH 1.0 beta 3?
ELMAH 1.0 BETA 3 (Build 10617), the most recent version at the time of writing, is included in the download available with this tutorial. Alternatively, you may visit the ELMAH website to get the most recent version or to download the source code. Extract the ELMAH download to a folder on your desktop and locate the ELMAH assembly file ( Elmah.dll ).
How long does it take to integrate Elmah?
Integrating ELMAH into a new or existing ASP.NET application is an easy and straightforward process that takes under five minutes. In a nutshell, it involves four simple steps:
What is error log source?
The <errorLog> section defines the error log source, which dictates where the error details are recorded; it is similar to the <providers> section in the health monitoring system. The above syntax specifies the SqlErrorLog class as the error log source, which logs the errors to a Microsoft SQL Server database specified by the connectionStringName attribute value.
How to add elmah.dll to Visual Studio?
Next, open Visual Studio and add the assembly to your project by right-clicking on the website name in the Solution Explorer and choosing Add Reference from the context menu. This brings up the Add Reference dialog box. Navigate to the Browse tab and choose the Elmah.dll file. This action adds the Elmah.dll file to the web application's Bin folder.
What is Elmah.io?
elmah.io is error logging, uptime monitoring, deployment tracking, and service heartbeats for your .NET and JavaScript applications . Stop relying on your users to notify you when something is wrong or dig through hundreds of megabytes of log files spread across servers. With elmah.io, we store all of your log messages, notify you through popular channels like email, Slack, and Microsoft Teams, and help you fix errors fast.
Can you use Integrated Security/Windows Authentication?
Connection string encryption. In case you cannot use Integrated Security/Windows Authentication, you may have username and password in clear text inside the web.config file. For obvious reasons, you really don't want that. If a hacker gets access to your web server, he/she now has access to your database as well.
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Introduction
Once a web application is live, it is very difficult to monitor it round the clock and there can be magnitude of reasons behind any exception / error occurring in application.
Background
I have been working on a web application which has both Web API and MVC and required exception logging on both platforms and since both Web API and MVC have different pipelines, ELMAH implementation required specific changes for each platform.
Implementation in MVC
Create a class inherited by System.Web.Mvc.HandleErrorAttribute and overriding OnException method to log error occurring in MVC application.
Implementation in WebAPI
Create a class inherited by System.Web.Http.Filters.ExceptionFilterAttribute and overriding OnException method to log error occurring in WebAPI.
License
This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)
Introduction
ELMAH is an open source, plug-&-play solution for logging and reporting unhandled errors in ASP.NET web applications. By deploying it to GAC (global assembly cache) and configuring at server level (machine.config or root web.config), you can achieve zero footprints at application level.
Inadequate security in ELMAH
ELMAH's built-in security can only turn remote access on/off. In other words, it uses server accessibility as a security defense. This is inadequate because the persons who want to use ELMAH may or may not have server access.
Solution part I: HTTP authentication
First of all, in order to authenticate and authorize an ELMAH request, we have to know who is making the request. As explained above, we are not able to use ASP.NET authentication mechanisms (i.e. Windows or form authentication), since they may be different from application to application. We will resort to HTTP authentication.
Summary
Combining the convenience of zero-footprint plug-&-play with the security of an independent authentication and authorization mechanism, ELMAH is enterprise-ready.
Access Through ASP.NET Authorization
- So, if the default setting is not being able to access /elmah.axd how do you browse your error logs? Well in fact, combining remote access with ASP.NET authorization rules is your friend. When installing ELMAH, configuration for the elmah.axdURL where added to your web.config file…
What About ASP.NET MVC?
- ELMAH were originally created for ASP.NET. Different features available in ASP.NET MVC have been causing a lot of head-scratching since introduced back in 2007. Some of you may have struggled with MVC's HandleErrorAttribute as well as getting custom errors and ELMAH working at the same time. In 2011, Alexander Beletsky created the Elmah.MVCpackage to help MVC dev…
Configure Remote Access Using Elmah.Io
- When using elmah.io, the problem with securing access to /elmah.axd goes away. Even though browsing your log through elmah.axd is fully supported when using elmah.io, we recommend you to access your logs through the elmah.io UI. This is secured behind a login of your choice. If you still want to control access to elmah.axdwhen using elmah.io, the solutions explained above is s…