I’ve been asked to find out if a particular site is running Windows or Linux as its webserver – usually we’d have access and I would just upload a phpinfo file and that would give me all the relevant information I need – however we’ve not been able to get access to FTP details yet.
Is there a simple method using a Firefox plugin like Web Developer Toolbar that will indicate if the server is running Windows/Linux etc?
Will not always work, but you can try typing in an address for the page that does not exist. If they don’t have a custom 404 error, you may be able to see what it is.