Bouncer

Bouncer is a simple .NET HttpModule that leverages an IP based ACL to allow admins into a site while unauthorized users will get a static page.

Video Demo

Config

Modify your web.config

<!-- Register the module -->
<modules>
  <add name="BouncerModule" type="Bouncer.BouncerModule, Bouncer" />
</modules>

<!-- update AppSettings -->
<appSettings>
    <!-- point to your static file -->
    <add key="bouncer:offlineFilePath" value="~/offline.html"/>

    <!-- put in an CSV formatted ACL; can be single IP or range or both -->
    <add key="bouncer:ipAcl" value="192.168.0.1,10.0.0.0/8"/>

    <!-- Exclude some directories from having the notification banner show -->
    <add key="bouncer:ignoreBannerPaths" value="/umbraco,/App_Plugins"/>

    <!-- configure file extensions to ignore; good for having images/css on your offline.html -->
    <add key="bouncer:excludedExtensions" value="jpg,png,gif,css,js"/>

    <!-- (optional) for debugging you can force the system to impersonate a non-admin; useful if you're on localhost and need to see what the user will see -->
    <add key="bouncer:impersonateNonAdmin" value="true"/>
<appSettings>

Create an offline static html document

To configure what the non-admin visitors will see, create a file in your website root named offline.html. Fill it with all the goodness you want. Make sure to exclude extensions in your <add key="bouncer:excludedExtensions" value="jpg,png,gif,css,js"/> so your static file can have rich assets.

Simply rename the ~/offline.html manually/programmatically to bring the site back online