hide the details of the glassfish Server

to access the http://myapexhost.mydomain:myport / notexistant.html will easily yield glassfish server and version information, as

HTTP status 404-

type of status report

Message

DescriptionThe requested () of the resource is not available.
GlassFish Server Open Source Edition 3.1.1

How can hide us this information, enhance safety a little more?

Best regards, Tom

Hello Tom,

I think that each error (Code 4xx for customer errors and Code 5xx server errors) would be eligible for your condition, because whenever one of them takes place, the user would see the information you don't want to give. A complete list with a specification of error codes is part of the [url http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4] RFC 2616 - HTTP/1.1. [url http://en.wikipedia.org/wiki/List_of_HTTP_status_codes] Wikipedia lists some additional status codes that are not part of the HTTP specification. Of course, not all specified errors are very likely to happen, but I guess it does not hurt to take five minutes, it cost you to take those as well. Despite authentication none of them affect other features of the earpiece of the APEX, so that they could be caught in the world.
If you want to keep it short, I would certainly recommend to apply a capture for 500 (Internal Server Error) in addition to those you named, because it usually includes a Stack Trace and you do not want end users to see that.
Regarding all other errors: to hide the details of the server is not done with just using a custom error page. GlassFish will send also the response as Server and X-Powered-Byheaders. See the following example pulled a 3.1.2 running on my laptop:

Server     GlassFish Server Open Source Edition 3.1.2
X-Powered-By     Servlet/3.0 JSP/2.2 (GlassFish Server Open Source Edition 3.1.2 Java/Sun Microsystems Inc./1.6)

I think that anyone who wants to hack your server would be able to access the headers. Devil in them, you will have to
1. Add a JVM option

-Dproduct.name=''

2. change the default - web.xml, look for the following block


   xpoweredBy
   true

and adjust the param value false
2B. turn off XPowered in the HTTP tab for your http-listener-x in the Network Config.

I hope that this answers your question. If so, please indicate accordingly this thread as answered and any useful or appropriate response.

Thank you

Udo

PS: I'm not an expert on GlassFish, but I guess there are many more things to do to harden your GlassFish. I recommend using your favorite search engine or a GlassFish forum for further research.

Tags: Database

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