slash after file name of a url causes issues

[fantalimon]

using rhel 5.5 with apache 2.2.17 and php 5.3.6
A slash after a file name and any random letters after it does not go to the custom 404 page but displays the page without formatting.

For example
www.example.com/about-us/example.html/ displays correctly
www.example.com/about-us/example.html/ndfjslj displays the same example.html page but without the formatting but i would expect this to server the custom 404 page.

I have tried with rewrites to fix this issue but it has not worked. Can anyone please guide me the right direction? Thanks

[g1smd]

Turn off AcceptPathInfo in the Options.

You'll need to set up redirects to the canonical URL if any of the duff URLs have been indexed by searchengines (or ensure that "410 Gone" is sent).

URLs for pages do NOT end with a trailing slash.

URLs with a trailing slash are reserved for folders and the index page in a folder.

[fantalimon]

Thank you for your advice. I have added AcceptPathInfo Off in the Options and all is working as it should. I wonder why this is not a default part of the httpd.conf file?

[g1smd]

It is the default for many sites, but some hosts turn it on to "reduce the number of support questions". Some sites don't work without it.