09-16-2009
Increase Password length
Hello All,
I am using RHEL 4. Currently maximum password length limit is set to 8 on my system.
Please tell what do i need to change to increase this limit to say 20. I changed the login.defs and included the following line -
"
PASS_MAX_LEN 20
"
but this dint work.
I further modified /etc/pam.d/system-auth file and added there too as-
"
password sufficient /lib/security/$ISA/pam.unix.so nullok maxlen=20 use_authtok md5 shadow
"
but this too doest work.
Can anyone please tell me how to increase the password length.
Thanks and Regards,
Shamik.
9 More Discussions You Might Find Interesting
1. AIX
hi friends,
anybody know how many character of password length in aix5.3? please help me
TIA
bong (1 Reply)
Discussion started by: bong02
1 Replies
2. HP-UX
Dear frnds,
how i can make the password 5chs minimum length in hp-ux 11i ? pls help
regards (3 Replies)
Discussion started by: jestinabel
3 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I need to create a file of record length more than 300 characters.
But in my unix box, i am able to create a file only with a maximum of 256 characters per record.
Is there anyway i can create a file with more than 300 characters in this case?
Or How to increase the maximum record... (1 Reply)
Discussion started by: mahish20
1 Replies
4. AIX
Hi All,
How can I make the password of only two userid with 6 length while others are using regular policy of 8 or more length.
Please help. Thanks. (2 Replies)
Discussion started by: itik
2 Replies
5. Solaris
I would like to enforce the users to use 15 character passwords. I have edited the /etc/default/passwd and given PASSLENGTH=15. What i noticed is that when user changes the password next time, it will enforce the a 15 character password but during the next logon, it verifies only first 8... (5 Replies)
Discussion started by: uxadmin007
5 Replies
6. Red Hat
Hello all,
If anyone has time, I have a few questions:
How do I do the following in Linux. We are using Red Hat and Oracle Enterprise Linux, which is based on Red Hat too.
1. How to lock the account after a few (like 3) invalid password attempts?
2. How do you lock a screen after 30... (1 Reply)
Discussion started by: nstarz
1 Replies
7. UNIX for Advanced & Expert Users
Hi,
This is my first post to this site. So kindly forgive if I am writing in a wrong section.
My query is that...
I want to modify the max username length size. I guess it is 32/64 on CentOS. Now I want to change it to 128. Is there any way to do that?
Thanks in advance!! :) (4 Replies)
Discussion started by: ajay303
4 Replies
8. Shell Programming and Scripting
Hello Everyone,
I am stuck with one issue while working on abstract flat file which i have to use as input and load data to table.
Input Data-
------ ------------------------ ---- -----------------
WFI001 Xxxxxx Control Work Item A Number of Records
------ ------------------------... (5 Replies)
Discussion started by: sonali.s.more
5 Replies
9. Shell Programming and Scripting
I have a ksh shell script and i need to pass arguments which are generated by data pulled from a database.
When the argument to the shell script is too long (about 4000 charecters) the below is the issue observed.
I copy the command which is 4000 charecters long from the logs and paste it... (7 Replies)
Discussion started by: mohtashims
7 Replies
LEARN ABOUT CENTOS
fingerprint-auth-ac
SYSTEM-AUTH-AC(5) File Formats Manual SYSTEM-AUTH-AC(5)
NAME
system-auth-ac, password-auth-ac, smartcard-auth-ac, fingerprint-auth-ac, postlogin-ac - Common configuration files for PAMified services
written by authconfig(8)
SYNOPSIS
/etc/pam.d/system-auth-ac
DESCRIPTION
The purpose of this configuration file is to provide common configuration file for all applications and service daemons calling PAM
library.
The system-auth configuration file is included from all individual service configuration files with the help of the include directive. When
authconfig(8) writes the system PAM configuration file it replaces the default system-auth file with a symlink pointing to system-auth-ac
and writes the configuration to this file. The symlink is not changed on subsequent configuration changes even if it points elsewhere. This
allows system administrators to override the configuration written by authconfig.
The authconfig now writes the authentication modules also into additional PAM configuration files /etc/pam.d/password-auth-ac,
/etc/pam.d/smartcard-auth-ac, and /etc/pam.d/fingerprint-auth-ac. These configuration files contain only modules which perform authentica-
tion with the respective kinds of authentication tokens. For example /etc/pam.d/smartcard-auth[-ac] will not contain pam_unix and pam_ldap
modules and /etc/pam.d/password-auth[-ac] will not contain pam_pkcs11 and pam_fprintd modules.
The file /etc/pam.d/postlogin-ac contains common services to be invoked after login. An example can be a module that encrypts an user's
filesystem or user's keyring and is decrypted by his password.
The PAM configuration files of services which are accessed by remote connections such as sshd or ftpd now include the /etc/pam.d/password-
auth configuration file instead of /etc/pam.d/system-auth.
EXAMPLE
Configure system to use pam_tally2 for configuration of maximum number of failed logins. Also call pam_access to verify if access is
allowed.
Make system-auth symlink point to system-auth-local which contains:
auth requisite pam_access.so
auth requisite pam_tally2.so deny=3 lock_time=30
unlock_time=3600
auth include system-auth-ac
account required pam_tally2.so
account include system-auth-ac
password include system-auth-ac
session include system-auth-ac
BUGS
None known.
SEE ALSO
authconfig(8), authconfig-gtk(8), pam(8), system-auth(5)
Red Hat, Inc. 2010 March 31 SYSTEM-AUTH-AC(5)