title: Where is there a list of Server Variables or <allowedServerVariables>?
body: <p>I want to know if there is a place that lists my server variables.</p>
  
  <p>I'm using Rewrite Url and I'm curious what I could effect.</p>
  
  <p>I found this <a href="http://weblogs.asp.net/owscott/viewing-all-server-variables-for-a-site" rel="nofollow">blog article</a> that lists the variables on a web page. I don't really want to add this to the site if there's another way.</p>
  
  <p>I've also researched <a href="http://www.iis.net/learn/extensions/url-rewrite-module/url-rewrite-module-20-configuration-reference#Allowed_Server_Variables_List" rel="nofollow">Rewrite Url</a> and all they say is:</p>
  
  <blockquote>
    <p><strong>ALLOWED SERVER VARIABLES LIST</strong></p>
    
    <p>Global rewrite rules can be used to set any request headers and server
    variables, as well as overwrite any existing ones. Distributed rewrite
    rules can only set/overwrite the request headers and server variables
    that are defined in the allowed list for server variables
    &lt;allowedServerVariables&gt;. If a distributed rewrite rule attempts to
    set any server variable or an HTTP header that is not listed in the
    &lt;allowedServerVariables&gt; collection a runtime error will be generated
    by URL Rewrite Module. The &lt;allowedServerVariables&gt; collection by
    default is stored in applicationHost.config file and can be modified
    only by an IIS server administrator.</p>
  </blockquote>
  
  <p>Where can I find a list of my server variables?</p>
  
  <p>If I don't have server adminstrator access, is there a list of common server variables that I can try?</p>