iTP Secure WebServer System Administrators Guide (Version 7.5+)
• <isindex action ="xxxx">
• <img usemaps ="xxxx">
Image references include:
• <img src="xxxx">
• <body background ="xxxx">
• <bgsound src="xxxx">
• <img dynsrc="xxxx">
• <input src="xxxx">
• <meta url="xxxx">
• <embed src="xxxx">
• <applet codebase ="xxxx">
• <script src="xxxx">
For ticketing purposes, the distinction between the two types is significant because you might want
to track HTML hits but not image hits; the ticketing attributes enable you to treat the two types of
references separately.
Rewriting HTML References
By default, the server makes relative absolute HTML references when necessary. Specifically:
• If cookies are unavailable, or if the ForceTicketInUrl attribute has been turned on, the server
makes relative any absolute references that it can. That is, if an absolute reference points to
a file on the same server, the server converts the reference to a relative reference. This enables
the Web client to attach a ticket to the URL.
• If cookies are enabled and the Web client supports them, and if the ForceTicketInUrl attribute
is off, the server does not rewrite any HTML references.
NOTE: The server does not modify the files stored on disk. Instead, as it sends the file to the Web
client, it rewrites any absolute references it finds.
You can change this behavior by using the -RewriteHtmlLinks attribute, which has this format:
-RewriteHtmlLinks Relative | Off
where:
-RewriteHtmlLinks Relative
specifies the default behavior.
Off
prevents the server from rewriting HTML references.
Rewriting Image References
By default, the server does not rewrite image references. If you have disabled the use of cookies,
or if you are forcing tickets into URLs, you might want to direct the server to make absolute all
image references to check that tickets are not inserted into these URLs. This action ensures that the
images are cached by proxy servers. However, if you want to track the number of times image
references are selected, you should make relative all image references.
You specify what action the content server should take for image references by using the
RewriteImageLinks attribute, which has this format:
-RewriteImageLinks Absolute | Relative | Off
For example, to make absolute all image references in department 5, enter
Configuring for Anonymous Ticketing 179