testlink 1.9.4 strong password

[camelmk]

Hello I'm trying to enable strong password for logging to my testlink page, in config files isn't visible any options for it.
I found password veryfication in validate.js and now I'm trying to add this funcionality, but maybe somebode do it better before me.
I have second question about recaptcha - how I can add it for main login page?

[fman]

SImplest option (if possible):
integrate with your company Active Directory or LDAP Server, this will force your password policy.

There is no TestLink option for more stricts password checks, like number of repeated characters, password len, dictionary checks, etc.

You can integrate any captcha library through custom development. If you will do it please give back your development
to community.

[camelmk]

I try to do it on login.php but it do not work correctly - maybe you could describe me more precisious please where it is possible.