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Full Discussion: Increase Password length
Operating Systems Linux Red Hat Increase Password length Post 302353867 by jim mcnamara on Wednesday 16th of September 2009 11:35:18 AM
Old 09-16-2009
A lot of older versions of unix don't support more than 8 characters. HPUX 10.2 for example. Stevens 'Advanced Programming in the UNIX Environment' mentions it as well. Red Hat out of the box hashes a maximum of 8; here is a discussion explaining changing PAM etc. to increase the password length:

Red Hat Knowledgebase: How do I change the default password length?

I have not used RHEL 4 so I assumed this was true.
 

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RHNREG_KS(8)						    Red Hat Linux System Manual 					      RHNREG_KS(8)

NAME
rhnreg_ks - a program for non interactively registering systems to Red Hat Network SYNOPSIS
rhnreg_ks [OPTION]... [PACKAGE NAME]... DESCRIPTION
rhnreg_ks is a utility for registering a system with the Red Hat Network. It is designed to be used in a non-interactive enviroment (a kickstart style install, for example). All the information can be specified on the commandline or stdin. --profilename Specify the profilename that should be used as an identifier for the system in Red Hat Network --username The username to register the system with under Red Hat Network. This can be an existing Red Hat Network username, or a new username. --password The password associated with the username specified with the --username option. This is an unencrypted password. --orgid Specify an organizational id of the org to register this system under. This is optional, and only used if registered a system to an existing Red Hat Network organization. --orgpassword The password assocated with the orgig specified with the --orgid option. This is an unencrypted password. --email The email address associated with the username specified iwth the --username option. --serialnumber Specify a servial number to associate with the system. This is optional, and only useful when combined with an orgid. --contactinfo Read contact info from standard in. The format is one entry per line, colon seperated. Valid options are reg_num, title, first_name, last_name, company, position, address1, address2, city, state, zip, country, phone, fax, contact_email, contact_mail, contact_phone, contact_fax, contact_special, contact_newsletter. --nohardware Do not probe or upload any hardware information. --nopackages Do not profile or upload any package information. --force Register the system even if it has already been registered. --version Show the version fo rhnreg_ks --proxy Specify a http proxy to use. FILES
/etc/sysconfig/rhn/up2date Configuration settings for up2date and rhnreg_ks /usr/share/rhn/RHNS-CA-CERT The ssl certificate authority file used by rhnreg_ks to validate the Red Hat Network ssl servers. EXAMPLES
The following registers a new system to Red Hat Network. rhnreg_ks --profilename "example_profile_name" --username "someexampleuser@example.com" --password "foobar" The following examples registers a new system to Red Hat Network including contact info. rhnreg_ks --profilename "example_profile_name" --username "someexampleuser@example.com" --password "foobar" --contactinfo < contactinfo where the file "contactinfo" contains data in the format: first_name: Billy last_name: Bob company: SomeCompanyName city: Springfield fax: 555-5555 phone: 555-5555 SEE ALSO
Configuration can be done via up2date --configure. rhnreg_ks is used to register a system to Red Hat Network. Visit <http://rhn.red- hat.com> for access or to sign up. You can also run up2date to register a system with Red Hat Network. Authors Written by Adrian Likins <alikins@redhat.com> REPORTING BUGS
Report bugs to <http://bugzilla.redhat.com>. COPYRIGHT
Copyright (C) 1999-2002 Red Hat, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. 4th Berkeley Distribution Wed 10 April 2002 RHNREG_KS(8)
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