CHAPTER 10: Using Proxies
258 Vcontroller
advertising users see. Check the URLs of popup windows or
banner ads you or your users find on the Web for other ideas.
Windows EXE
A pattern match rule that denies URL path content
with the extension “.exe.” This effectively prevents
users from accessing common Windows
applications using HTTP. Installable programs are
often EXE files, so in some scenarios this rule can
cause problems.
Windows DLL
A pattern match rule that denies URL path content
with the extension “.dll.” This effectively prevents
users from accessing some Windows applications
across HTTP. DLLs are sometimes use for web
applications such as banners or tickers. However,
DLLs can pose a threat to your systems and
network. Exercise caution when changing this rule.
N
OTE
Blocking *.exe files in URLs prevents Windows users on your
network from downloading executables over HTTP. This
might inconvenience users who need access to software
downloads. In addition, blocking *.dll files in URLs prevents
some web applications from working.
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