Questions regarding password-based authentication and password management

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5
votes
1answer
563 views

how to verify if root password changed correctly

I have an OpsWare task, that changes root passwords on a massive number of servers, by replacing the root's password hash in /etc/shadow file. I need a script of some sort, which preferably runs ...
4
votes
1answer
34 views

Unlock the encrypted Volumes after restarting the server via SSH

I used the sudo shutdown -r to restart my Mac server via SSH. However, after restarting the server, I discovered that two volumes are offline due to encryption. What I am trying to do is input the ...
4
votes
1answer
67 views

Prevent users changing password in FreeBSD

How can I prevent a user to change its password in FreeBSD. In Linux i can do this by using chage -m 99999 <username> where chage is found in shadow-utils Reason for this is I created one shell ...
3
votes
0answers
590 views

NetworkManager cannot remember my WiFi password

My system is Gentoo 64bit, with KDE4. I just updated my Gentoo system. And after reboot, it asks me for my WiFi password. But the next I log in, it asks the password again. I checked the settings, and ...
3
votes
0answers
119 views

Restrict usage of the same password during a time period

I need to configure a server with some requisites on the password changing: in addition to other requisites, I need to ensure that, on a password change, it is not repeated (last 5 passwords) and ...
3
votes
0answers
438 views

ZIP password finders for Linux?

I'm trying to extract ZIP files for an encrypted archive I've forgotten the password for. So far I've found the tool fcrackzip which does what I want, but its own manpage states that it has numerous ...
2
votes
0answers
30 views

Can I make cross-computer sharing compatible with tinfoil-hat security (password managers, email, etc.)

Preface: I realize the following is asking for tinfoil-hat type security, but I'm really curious for answers to my questions -- not suggestions to enable two-factor logons on gmail, etc. and call it a ...
2
votes
0answers
73 views

Is there a password manager server application

Yet another hackers attack on the infrastructure of companies that offer to store our passwords begs the question: Is there a password manager server application? (Along with browser extensions) ...
2
votes
0answers
1k views

Password protected zip archives open without password

I have a zip archive that is password protected in linux(the password is "secret"). However, whenever I try to open the zip file I am not prompted for a password or anything. I also have a python ...
2
votes
0answers
314 views

dbclient - login without manually typing password

On my router which runs OpenWRT I need a script which will keep a SSH connection alive mostly all the time (small breaks are OK). As the ssh server which I want to connect to takes care of multiple ...
2
votes
0answers
56 views

Integrate my own PAM module with the passwd command

I know that to integrate my module with the passwd command all I need to do is add the following line to the /etc/pam.d/passwd file: password sufficient mymodule.so My question is I want my module ...
2
votes
0answers
160 views

Editing nsswitch.conf to check for files other than /etc/passwd while searching local files for user details

I have a file in /etc named radius which contains the user account details similar to /etc/passwd but of Radius users. How do I configure /etc/nsswitch.conf to check /etc/radius in addition to ...
2
votes
0answers
121 views

Getting non-stored password from Icedove

I've recently changed my mail password (because of Heartbleed), but I've forgotten the new one. When entering the new password in Icedove, I didn't think of clicking "remember password", but the ...
2
votes
0answers
2k views

Changing Samba/LDAP password with passwd

We've installed CentOS Directory Server (389 DS) and have Samba using it as a backend. This works great except that when enabling password syncing in the smb.conf it is only synced one way. I could ...
2
votes
0answers
938 views

samba 4 force user

I have a directory with files owned by Linux user quux. I want to give access to it over CIFS using Samba 4 for two persons so they have different usernames foo and bar and passwords but access the ...
2
votes
0answers
646 views

Validate Password for user account from shell script

Application is for a multiple server standardization script Looking for a way in a shell script to check if the password for an OS account (AIX) matches a standardized plain text password. The ...
2
votes
0answers
740 views

Getting a short wifi password to work on Linux Mint

Wifi password became a problem to me. My wifi password consists of only 4 letters but my Linux Mint 12 is expecting more than 7 letters - until then connect button is disabled. Can I work around this ...
1
vote
0answers
19 views

Slow hashcat after resume

Input.Mode: Dict (wordlist.txt) Index.....: 4/1265 (segment), 2994585 (words), 33550344 (bytes) Recovered.: 0/1 hashes, 0/1 salts Speed/sec.: 601 plains, 601 words Progress..: 1854564/2994585 (61.93%) ...
1
vote
0answers
29 views

How to remember / autofill forms with uzbl

I'm using uzbl to listen radio online, including this French web radio. There's a simple email/password form I would like to be filled automatically (down-right corner link "Se connecter"). Less ...
1
vote
0answers
36 views

Pass passwordlist to 7zip

I'm writing a shellscript to automate my 7zip, rar etc extraction tasks. Normally JDownloader2 does this for me when I download files through it, but when I download files by hand I will still need to ...
1
vote
0answers
127 views

Fedora 22, disk-encryption passphrase, POST fails, dracut

I was in the process to install Fedora 22-3 on an Acer desktop with Windows 8 to create a dual-boot system. I believe to have followed reasonable guidelines on how to do this. (I reached up to point ...
1
vote
0answers
35 views

Root password not working when trying to update

Running SLES12 on a VirtualBox VM I get the notification that there are software updates. Trying to invoke the update, a popup appears and forces input of administrator password. When I enter the ...
1
vote
0answers
52 views

Password entry only responds to Ctrl + D, and password cannot be read

I am trying to run build-key-pkcs12 user on my OpenWRT NSLU2, to generate some client keys for the users of my VPN. Everything runs normally until I get to the enter export password part, and the SSH ...
1
vote
0answers
242 views

logging wrong passwords in /var/log/auth.log

/var/log/auth.log logs (among other things) failed login attempts to my debian linux. I was wandering if it is possible to ask it to log the password that was used in the failed attempt. This is ...
1
vote
0answers
188 views

Persistent SSH port forward without public keys

Problem I haven't found a solution to run an SSH port forward in a reliable and persistent fashion, when the server you are connecting to does not support public-key authentication. Question What ...
1
vote
0answers
369 views

md5 password hash

I'm looking to create a md5 hash to use in /etc/shadow. Someone suggested using grub-crypt. Every time I put the same password in I get a different hash. [root@endpoint ~]# grub-crypt --md5 Password: ...
1
vote
0answers
570 views

removing `nullok` from system-auth prevents any root password

[ this is a follow-up on my post on ServerFault : http://serverfault.com/questions/661136/root-accepts-any-password-how-to-change-to-a-real-password ] On an old system the root account accepts any ...
1
vote
0answers
80 views

Pass/Firefox master key integration?

I handle my passwords with pass, and I use the Firefox master password functionality. The master password is rather long and "safe" and stored in pass along with the others. For now, my usual Firefox ...
1
vote
0answers
284 views

gksu -S ask for password only once even when set to three times in sudo configuration

I have a problem with gksu command. It always ask for password only once even when I set Defaults passwd_tries=3 in /etc/sudoers file. Command: $ gksu -S --debug ls No ask_pass set, using default! ...
1
vote
0answers
177 views

Change password hashing to PBKDF2 on Debian-based OS

I'm looking for a way to change the hashing scheme on my Debian-based OS from sha512 to pbkdf2. Searching the internet hasn't helped much. The closest I've got is this question: Enable Blowfish-based ...
1
vote
0answers
77 views

Is it possible to create an alias to rlogin and pass login paramteres?

There is a system I need to rlogin to for work, and each time it asks for my username and password and after the login I have to type in a code-word in order to get to the view I want. Is it possible ...
1
vote
0answers
111 views

Which command would you use if you want to remove the password assigned to a group

Suppose I have one or more groups (as in the user database as backed by /etc/group or LDAP or NIS+...) configured with a password (for the sg or newgrp commands). Which command would you use to ...
1
vote
0answers
280 views

Fedora 20. Authentication requires a different password from su

In Fedora 20 (using Mate desktop) I have tried to change the default keyboard layout from US English to UK English, but am asked for "Authentication". The password I have for su is not accepted, and I ...
1
vote
0answers
217 views

Make gdm/mdm prompt for an empty password on liveCD

By default Fedora liveCD is configured in a way that liveuser is logged in automatically since following lines added to gdm/mdm (a fork of gdm of GNOME2) configuration file [daemon] ...
0
votes
0answers
86 views

Non-root user cannot change Samba password

Samba users cannot change their own passwords. The password can only be changed using root account using the command smbpasswd -a <username> But I want users be able to change their passwords ...
0
votes
0answers
87 views

ubuntu 15.04 problem with typing password to decrypt the disk

I have a stupid problem after installation of ubuntu15.04 on lenovo e450. I install ubuntu with full-encryption disk option, but I have a problem. I cannot type password to this password box, but when ...
0
votes
0answers
42 views

Brute Force 256 AES .dmg

I have most of the password for a dmg file and crunched a word list for all the combos. How do I get the hash for it to feed into John The Ripper? I am using OS X Yosemite. When I have tried before, ...
0
votes
0answers
166 views

Centos 7, protect single user mode [systemd vs init]

Since Cento7 & RHEL 7 started using systemd inplace of init inittab there are no use /etc/inittab & /etc/sysconfig/init to password protect single user mode Question is now where we can find ...
0
votes
0answers
74 views

Linux Mint 17.2 dual password prompts

I have an odd issue with my system showing me two password prompts after waking up from suspend mode. I can click on either to enter my password and I only need to enter it into one form to login. I ...
0
votes
0answers
53 views

Linux Mint: two password forms after suspend mode

I have an odd issue that's not really a performance problem but a mild cosmetic one. When my laptop wakes up from sleep mode and prompts me for my login password I usually get two forms requesting my ...
0
votes
0answers
229 views

password aging policy, the passwd command and /etc/shadow

I came across this phrase in the link below http://brandonhutchinson.com/wiki/Solaris_Password_Policy /usr/bin/passwd is used to modify password aging on existing accounts. passwd does not ...
0
votes
0answers
30 views

not modified file increased size

weird thing happened. passwd file size increased although the timestamp hasn't... i've checked for rootkits and nothing found. Any reasons you can think of? Regards
0
votes
0answers
174 views

How to Sync UNIX Passwords SAMBA4.x?

My current server is running Debian 8 jessie with Samba 4. Its purpose will be to host a simple file sharing server for around 100 people on Windows machines. I already have a collection of UNIX users ...
0
votes
0answers
81 views

What is the user and password for Sabayon Linux?

I am currently unable to use my computer because I can not login. I've burned thrice the daily minimal-dev Sabayon Linux ISO onto the same USB flash device. Each time, the login screen asks for login ...
0
votes
0answers
102 views

shell script prompting for password but not taking it while doing tar

In my shell script, I have following lines: function tarIt() { FILE_OWNER=$1 TAR_FILE_NAME=$2 FILE_NAME=$3 su - $FILE_OWNER -c "tar -czf $TAR_FILE_NAME $FILE_NAME 2>&1" if [ ${?} ...
0
votes
0answers
151 views

'Pass' password manager - does it require public key?

The 'pass' password manager uses gpg keys. http://www.passwordstore.org/ However, gpg itself can be used for symmetric encryption of files. Does pass only work using public/private keys, or is it ...
0
votes
0answers
302 views

Cracking .cap file without dictionary

.cap file taken by airodump handshake I need to crack .cap file with bruteforce attack If the password between 8 and 12 letter containing characters+numbers+symbols I tried simple crunch command ...
0
votes
0answers
242 views

migrating local users to LDAP

I have sucessfully setup LDAP and LAM on a raspberry pi in my home network. I have several Linux machines around the house, some Windows machines, aswell as a QNAP TS-210 NAS. They all have the same ...
0
votes
0answers
20 views

Returning from a sleep the desktop displays shortly (before entering password), privacy issue

OS: Linux mint 17.1 Cinnamon 64-bit Cinnamon version 2.4.6 Intel Celeron: 900 @ 2.20Ghzx1 Memory 2 Gb Graphics Card: Intel Mobile 4 series integrated When I return to my computer after it has been ...
0
votes
0answers
39 views

Debian, ActiveDirectory and Password

I have joined a Debian Wheezy to a Win server 2003 with Active Directory, following this guide: Everything goes well except for the password change. I am not able to change the password of my domain ...