Implement long usernames in HP-UX 10.20

Marc_9 — Fri, 13 Jul 2001 16:54:24 GMT

Hello admins,

I would like to know how to implement long usernames (>8 characters)in HP-UX 10.20 if it can be done.

tia,

Marc,

Re: Implement long usernames in HP-UX 10.20

James R. Ferguson — Fri, 13 Jul 2001 22:19:14 GMT

Hi Marc:

You said "username", not "password", but read onward. From Knowledge Base document #KBRC00004673:

/begin_quote/

# man 4 passwd

The current use of this field is derived from its use within the Berkeley Software Distribution. Future standards may define this
field for other purposes.

The following fields have character limitations as noted:

+ Login name field can be no longer than eight characters;
+ Initial working directory field can be no longer than 63 characters;
+ Program field can be no longer than 44 characters.
+ Results are unpredictable if these fields are longer than the limits specified above.

PHCO_22265

The patch text contained the following:(Customer viewable)

The PAM libraries intentionally reject login names which are longer than eight characters. This behaviour is changed from 10.20. Some
customers want a way to bypass this restriction.

Resolution:

libpam_unix.1 now checks for the existence of a file in the /etc/default directory called:
I_ACCEPT_RESPONSIBILITY_FOR_BYPASSING_SECURITY_CHECKS

If this file exists, then login names longer than eight characters can be added to /etc/passwd, and then those users can login. Note the following restrictions:

1. HP has never claimed to support user names longer than eight characters, and does not recommend that customers bypass the existing length checks. Bypassing the existing length checks may cause functional and/or security problems.

(SEE ABOVE OR MAN 4 PASSWD)

2. This patch does not remove the existing user name length checks from other commands - for example, pwck(1m), sam(1m), useradd(1m).

3. Do not enable long user names on trusted system configurations.

Please check the ITRC for latest patches.

/end_quote/

...JRF...

topic Implement long usernames in HP-UX 10.20 in Operating System - HP-UX

Implement long usernames in HP-UX 10.20

Re: Implement long usernames in HP-UX 10.20