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You need to enable/use PAM for checking of passwords, password history.<br />
<br />
Please read:<br />
<a href="http://www.softpanorama.org/Solaris/Security/solaris_pam.shtml" rel="ugc">http://www.softpanorama.org/Solaris/Security/solaris_pam.shtml</a><br />
<br />
BTW, why not upgrade to Solaris 10, you can set the password hostory in /etc/default/passwd file<br />
<br />
otherwise have a look at the following page: (I never use this one myself!) <br />
<a href="http://www.badpenguin.co.uk/main/content/view/25/35/" rel="ugc">http://www.badpenguin.co.uk/main/content/view/25/35/</a>
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You need to enable/use PAM for checking of passwords, password history.

Please read:
http://www.softpanorama.org/Solaris/Security/solaris_pam.shtml [http://www.softpanorama.org/Solaris/Security/solaris_pam.shtml]

BTW, why not upgrade to Solaris 10, you can set the password hostory in /etc/default/passwd file

otherwise have a look at the following page: (I never use this one myself!)
http://www.badpenguin.co.uk/main/content/view/25/35/ [http://www.badpenguin.co.uk/main/content/view/25/35/]

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Hi All,<br />
<br />
I want to configure my solaris systems to not to reuse the last four passwords for the acccounts for th e audit complaince, in what way I can do it. Also, I seems that I need to use PAM to get it done, had anybody done this in their setup. &nbsp;This are solaris 9 sparc systems.<br />
<br />
Thanks<br />
virgo
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Hi All,

I want to configure my solaris systems to not to reuse the last four passwords for the acccounts for th e audit complaince, in what way I can do it. Also, I seems that I need to use PAM to get it done, had anybody done this in their setup.  This are solaris 9 sparc systems.

Thanks
virgo

Solaris 9 - reuse of last four passwords

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.

Unix OS

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.