Dont forget that for security reasons it is wise to only have root connection allowed from the console, and that is done by creating a single line file containing:
Hi all,
As all of us know that in /etc/passwd file the first field correspond to username
could any one tell me what is bin , damoen etc in the first field, and r they in
user field , what is nologin in the last column ?
root:x:0:0:root:/root:/bin/bash ... (4 Replies)
i am using apache2.0, and i used this command to create username/passwd:
./htpasswd -b passwd.file username password
is it away to translate password back to plaintext ?
for example, passwd.file contains:
username:HnennjvqsGaQs
i want to translate back to:
username:password (1 Reply)
Hi friends, i need a favour from u all i made a small change in home pc it is INTEL i had change /etc/passwd i just change the shell for the root instead of sh i kept bash and i had taken back up of the file /etc/passwd. now the problem is i am not able to log in as a root i got a error NO Shell... (10 Replies)
Hi Gurus,
I have one requirment..
I have written a script and it asks a registry passwd while performing some clearcase command. Now we are giving it manually. It's for one time run. We want to perform this for multiple times on multiple files throguh for loop.. means we need to pass the same... (3 Replies)
Hi Folks,
I have Solaris 10, latest release.
We have passwd aging set in /etc/defalut/passwd.
I have an account that passwd should never expire. Acheived by emptying associated users shadow file entries for passwd aging.
When I reset the users passwd using passwd command, it re enables... (3 Replies)
Hello All,
Can anyone post the default /etc/passwd file for AIX?
I would like to compare with an existing machine of mine and want to identify what are the default users that are created when the O/S is installed.
In other words I would like to see the system users in AIX. Not the ones created... (1 Reply)
Not an unix expert, I read a few pages on the web about passwd files, but I didn't find the answers I need about the last 8 lines of the passwd file I'm taking a look at.
I'm assuming their shortcuts to another file that may have the actual usernames of users on the system.
Please, any help... (1 Reply)
Hello,
I'm trying to recover my /etc/passwd file, but I can't make it work. Im doing the following:
1. Booting from cd-rom:
2. Mounting hard disk drive
3. Copying my passwd and shadow files to /a/etc/
4. Unmounting Hard disk:
5. Rebooting
6. Stopping my OS from booting ( by pressing... (11 Replies)
Discussion started by: alvaradogunner
11 Replies
LEARN ABOUT CENTOS
pam_securetty
PAM_SECURETTY(8) Linux-PAM Manual PAM_SECURETTY(8)NAME
pam_securetty - Limit root login to special devices
SYNOPSIS
pam_securetty.so [debug]
DESCRIPTION
pam_securetty is a PAM module that allows root logins only if the user is logging in on a "secure" tty, as defined by the listing in
/etc/securetty. pam_securetty also checks to make sure that /etc/securetty is a plain file and not world writable. It will also allow root
logins on the tty specified with console= switch on the kernel command line and on ttys from the /sys/class/tty/console/active.
This module has no effect on non-root users and requires that the application fills in the PAM_TTY item correctly.
For canonical usage, should be listed as a required authentication method before any sufficient authentication methods.
OPTIONS
debug
Print debug information.
noconsole
Do not automatically allow root logins on the kernel console device, as specified on the kernel command line or by the sys file, if it
is not also specified in the /etc/securetty file.
MODULE TYPES PROVIDED
Only the auth module type is provided.
RETURN VALUES
PAM_SUCCESS
The user is allowed to continue authentication. Either the user is not root, or the root user is trying to log in on an acceptable
device.
PAM_AUTH_ERR
Authentication is rejected. Either root is attempting to log in via an unacceptable device, or the /etc/securetty file is world
writable or not a normal file.
PAM_INCOMPLETE
An application error occurred. pam_securetty was not able to get information it required from the application that called it.
PAM_SERVICE_ERR
An error occurred while the module was determining the user's name or tty, or the module could not open /etc/securetty.
PAM_USER_UNKNOWN
The module could not find the user name in the /etc/passwd file to verify whether the user had a UID of 0. Therefore, the results of
running this module are ignored.
EXAMPLES
auth required pam_securetty.so
auth required pam_unix.so
SEE ALSO securetty(5), pam.conf(5), pam.d(5), pam(8)AUTHOR
pam_securetty was written by Elliot Lee <sopwith@cuc.edu>.
Linux-PAM Manual 09/19/2013 PAM_SECURETTY(8)