デプロイ時にWeb.configに値を設定する Parameters.xml の話 ref: http://qiita.com/kamiyn/items/2311b9cfb7e7a20d5796

Parameters.xml

<?xml version="1.0" encoding="utf-8"?>
<parameters>
  <parameter name="/configuration/system.webServer/security/ipSecurity/allowUnlisted" description="IPアドレス制限">
    <parameterEntry kind="XmlFile"
                    defaultValue="false"
    scope="\\Web.config$"
    match="/configuration/system.webServer/security/ipSecurity/@allowUnlisted" />
  </parameter>
</parameters>

Web.configの一部

<?xml version="1.0" encoding="utf-8"?>
<configuration>
......
  <system.webServer>
    <security>
      <ipSecurity allowUnlisted="false">
        <add ipAddress="127.0.0.1" allowed="true" />
      </ipSecurity>
    </security>
  </system.webServer>
......