Duplicate content from page links

[blueray]

So for the last month or so I have been going through fixing SEO content issues on our site. One of the biggest issues has been duplicate content with WHMCS. Some have been easy and other have been a nightmare trying to fix.

Some of the duplicate content has been the login page when a page requires a login. For example knowledge base article that are only viewable by clients etc. Easily fixed for me as I dont really need them locked down like that. However pages like affiliate.php and pwreset.php that are only linked off of a page.

I am unsure how to take care of these types. Here are some pages that are being listed as duplicate:

Should this type of stuff be a 301 redirect to cart.php or would that break something.  I am guessing that everything should point back to cart.php.
https://www.bluerayconcepts.com/brcl...art.php?a=view
https://www.bluerayconcepts.com/brcl...php?a=checkout

These are the ones that are really weird to me. These are showing as duplicate content but pwreset is only a link of the KB category. It shows up as duplicate many times as does affilliate.php:

https://www.bluerayconcepts.com/brcl...ebase/16/Email
https://www.bluerayconcepts.com/brcl...16/pwreset.php

Any help is overly welcome.

[JordanLowry]

First I would go through and make a list of all duplicate content and use the moz bar tool to decide which one has the higher rank then I would 301 them to their equivalent. If you are worried about breaking something within your cms you could always canonicalize the duplicates.

Hope this helps some.

[blueray]

Jordan - Canonicalization was my first thought but there is no way of doing this within the CMS.  Wordpress yes, WHMCS no and I have not found anyway of doing canonicalization via htaccess.  All the articles I read start out talking about canonical but then when they get to using htaccess it all goes to 301 redirects.

Unfortunately with WHMCS there is no way other than htaccess to handle canonicalization.  At least not that i have found yet

[JordanLowry]

What about going in and hard coding the canonical tags?