web.config을 수정하는 방법
1.
<httpRuntime enableVersionHeader="false" />
2.
<rule name="removingserverheader" enabled="true">
<match serverVariable="RESPONSE_SERVER" pattern=".*" />
<action type="Rewrite" value="My Web Server" />
</rule>
3.<system.webServer>
<httpProtocol>
<customHeaders>
<remove name="X-Powered-By" />
</customHeaders>
</httpProtocol>
</system.webServer>