The authentication tag has no wiki summary.
0
votes
1answer
28 views
Password length and complexity
I am using CentOS and I want to set the minimum password length, minimum password expiry , maximum password expiry and password complexity in my system.
I have looked over some tutorials to change ...
1
vote
1answer
21 views
Replacing graphical sudo prompts with sudo command
I'm trying to replace gksudo, pkexec and its ilk with sudo. However, I'm told that using sudo <graphical_program> is a bad idea.
Would the following work as a decent replacement?
sudo -H ...
1
vote
0answers
16 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 ...
2
votes
2answers
41 views
Making su ask for password multiple times
Is there some way to make su ask for the password again in case of a wrong password (just as sudo does)?
Initially I thought of this:
while ! su -c foo; do
read -n 1 -p "Retry(y/n)?" ch
if [[ ...
1
vote
1answer
22 views
Dynamic password authentication
I would like to know how can I (and if it's possible) create a dynamic authentication for a user in linux.
The server would change the user password periodically and the user would use a program ...
1
vote
1answer
27 views
PPTP VPN error: LCP terminated by peer
I cannot connect to my PPTP VPN server, even though the CHAP authentication succeeds.
This is from /var/log/syslog:
Jun 11 07:27:22 aspire pppd[32221]: CHAP authentication succeeded
Jun 11 07:27:22 ...
2
votes
3answers
128 views
Can sudo replace su?
There is much duplication of functionality on Linux-based systems, for example these do the same thing:
sudo --login --user <user>
sudo su - <user>
The sudo-only approach looks more ...
1
vote
1answer
44 views
A messagebox keeping popping up in my centos VNC server asking to change proxy settings?
I have included a screenshot of what it looks like. It keeps appearing and in the morning you to close it 50 times.
Could you please help me identify where the problem lies?
NOTE: It's CentOs 6 ...
2
votes
0answers
53 views
recover email from imap account using mailx
I am having problems fetching emails with mailx. My imap account uses ssl/tls connection with normal password authentication on port 993. I don't have any problems sending through smtp though. Here is ...
-1
votes
1answer
35 views
How do i deal with HP Device Manager requiring authentication to remove print jobs?
I have Fedora 20, with Gnome 3 Classic, and have installed Okular to read and, especially, print pages from, .pdf files. I want to print only a few pages, but in my frustrated attempts to set this up ...
1
vote
2answers
55 views
Why do my sshd logs show many trys on invalid ports?
My ssh daemon is setup to listen on port 2221. I have also disabled root login from ssh.
I don't understand why in auth.log I have attempts to log on other ports (example with 4627 here).
May 17 ...
1
vote
1answer
75 views
problem with unique ssh public/private key pair on second user
I have created an ssh key pair using ssh-keygen -t rsa for my main user and everything seems to be working well. Password login has been disabled.
I have a second user that I am trying to create a ...
0
votes
1answer
81 views
Creating MySQL database and user without password
I am building a set of bash scripts which basically prepare apache virtual hosts, git repositories and other stuff on a cloud server. So far so good, everything is working, but a big problem occurred: ...
0
votes
1answer
18 views
“NOT AUTHENTICATED” warning trying to install rdesktop on almost-fresh Mint 16 install
Linux Mint 16 (Ubuntu-based) 32-bit running on a netbook. Installed Wine and Skype, and all updates. Went to install rdesktop (typed rdesktop in the gnome menu search, chose 'install rdesktop'), and I ...
1
vote
1answer
21 views
How does the authentication process with the salted hash in shadow work
Does the supplied password during login get converted to a salted hash and then compared to the one in /etc/shadow? /what if the user is in LDAP but not in the shadow file? Would it use kerberos?
1
vote
2answers
46 views
Reset password for regular user who is locked out
I'm a complete noob in Linux and I'm stuck in a situation where I'm logged in an Linux box from putty but on of my colleague, who was trying to login on same machine from his machine blocked my user ...
1
vote
1answer
30 views
Connecting to Github from server
I am trying to connect to Github from a server running Jenkins.
To do this, I'm copying my public key from another server, into the authorized_keys on the new server.
All I'm getting is the ...
2
votes
1answer
57 views
login 'authentication failure' by non-root user, can login only by root [closed]
In my CentOS 6.0 system, working since months, suddenly stop authenticating non-root users, in graphical mode.
I have checked necessary /etc/pam.d/* files, but those are unchanged.
SELinux is ...
0
votes
0answers
25 views
Hit “sasl_decode error=-1” while sending mail via sendmail server on RHEL
Having installed sendmail and openwebmail on RHEL workstation 6.3, I can send email through webmail(cgi-bin/openwebmail/openwebmail.pl), but failed to interact with sendmail server in Perl script as ...
1
vote
0answers
25 views
How to get the authentication status from the last PAM module run
If I have the following PAM stack:
auth required default_pam.so
auth requisite my_custom_pam.so
....
How do you obtain the authentication status from the last/previous PAM module run for use in ...
0
votes
0answers
16 views
KRB5 auth with samba
I'm attempting to setup a samba share on RHEL6 for a group of users. There are quite a few of them with very little technical experience so having them SSH in to reset smbpasswd is asking a lot.
We ...
0
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0answers
63 views
Get user login name and address on bad login attempt [Dovecot]
Background
I am trying to develop a method to ban users who exhibit strange behavior when logging into Dovecot by obtaining their POP-ID/login name and IP address. I want to send that information to a ...
2
votes
1answer
37 views
Obtain pop-id or IP address when client logs into Dovecot server
Background
I have been doing some research on the Dovecot mail server documentation on ways to get client information when a client connects to the server. I am interested in using these to program an ...
0
votes
1answer
65 views
Authentication failure for FTP server [duplicate]
I followed this link to install ftp server.
And also added ftp user(ftpuser) and also added ftp password(1234567).
But when I am using this password in any wordpress site or any ftp software such as ...
3
votes
1answer
126 views
mod_authnz_ldap bind as authenticating user instead of anonymously
I'm attempting to move as close to single credential as possible. We have a web application that has a fairly limited set of available authentication mechanisms but will (luckily) allow admins to tell ...
0
votes
1answer
87 views
Apache mod_auth_kerb: “Key table entry not found”
I want to use the Apache Module "mod_auth_kerb" to implement SSO for a Webapplication.
With the following config:
<VirtualHost 10.5.3.200:443>
#Proxy
<Proxy *>
Order deny,allow
Allow ...
5
votes
1answer
125 views
Command line printing with a Samba printer requiring authentication
Is there a way to print to a Samba printer requiring authentication by providing the credentials on the command line (e.g., with lpr)?
I managed to store the credentials in GNOME Keyring and when I ...
0
votes
2answers
57 views
How to set Linux to ask for authentication when running potentially dangerous commands?
I've faced times when I accidentally ran dangerous commands and lost all my data. How do I set Linux to ask for current user password or root user password when running potentially dangerous commands ...
1
vote
2answers
318 views
Using curl to access basic auth protected website via proxy (polipo)
I am trying to download a file protected via basic auth:
curl "http://User:[email protected]/blub/bla.bin"
This is working fine.
As soon as I tell curl to use my locally installed polipo it fails:
...
2
votes
1answer
99 views
Gnome-shell authentication dialogue fails, how to debug which app is using it?
I am using ubuntu 13.10 with gnome shell 3.8.4.
I used to use gnome online accounts for empathy and other things, but then I stopped using them.
And then gnome shell started to show authentication ...
0
votes
2answers
42 views
In Fedora 17 kde I don't know user or password to authenticate printer installation
I am trying to set up a new computer with Fedora 17 and KDE both working ok. I have plugged in an HP laser USB printer, and am trying to set it up. I enter "system settings -> printers" from the KDE ...
4
votes
2answers
1k views
Lenovo T440s Fingerprint reader in Fedora 20
I just got my new Lenovo T440s and installed Fedora 20 with Gnome 3 on it. Everything runs smoothly, except for the fingerprint reader. Its got a Validity VFS5011 (138a:0017) device which is not yet ...
8
votes
3answers
153 views
Trap: can't su as root, can't change group to wheel, ssh as root prohibited
Is this a trap? I made these steps in FreeBSD 10:
1) ssh as root prohibited
2) logged as user
3) su as root
4) as root chsh changed name of user "user" to "luser"
5) exit from ...
8
votes
2answers
2k views
I Can't login as root with su command, but I can with SSH
How is it possible that I cannot log in as root by su root or su (I get incorrect password error), but I can log in by ssh root@localhost or ssh root@my_local_IP with the same password?
I'm using ...
0
votes
2answers
221 views
vsftp user authentication problems
I configured my ftp user's home dir to /var/www and set a password but I cannot login with ftp 127.0.0.1, it keep giving me 530 Login incorrect. Why is this? I'm sure I have typed the password right.
...
2
votes
0answers
179 views
Enter user authentication details for a printer?
I have a printer which is configured using the correct drivers. However, the printer requires user authentication (i.e. a username and password) to print. Where are authentication details usually ...
2
votes
0answers
159 views
Is there an alternative to OpenLDAP / Kerberos? [closed]
Are there ways to do centralized secure network-based authentication & authorization and user management that aren't OpenLDAP and Kerberos?
Frankly, Kerberos is a nightmare to configure, leaving ...
0
votes
1answer
240 views
How to configure Samba to use Windows's login ID?
I'm trying to access the Linux share folder from Windows using Windows's domain authentication. I come across the integration of Windows Active Directory into Samba on a Linux box, thus I have this ...
1
vote
2answers
87 views
Is there any shared filesystem based on public key authentication?
I normally use NFS, however I am not so comfortable with the security as basically a root user can just change his UID to an arbitrarily one in order to obtain access to a shared folder.
Moreover, ...
4
votes
2answers
219 views
Allow user1 to “su - user2” without password
I need to allow user martin to switch to user martin-test without password
su - martin-test
I think this can be configured in /etc/pam.d/su. There are already some lines in that file which can be ...
2
votes
1answer
151 views
How do I reset RHEL6 to autocreate home directory upon login?
I am using a RHEL6 host that is set up using LDAP for authenication. Upon first login it is supposed to create the home directory for the user (e.g. /home/gisle where gisle is my login username). I ...
0
votes
3answers
87 views
SSH public key authentication works on LAN and not from WAN
I've setup my SSH server to use public key authentication. When I connect to my server on local network, it authenticates. But it doesn't when I connect over the internet.
I don't think the problem ...
0
votes
1answer
76 views
Ssh 'access denied' from one host but not the other
Consider the following scenario:
I have a Debian-ssh-server setup and exposed it to the internet for some time for testing. Also I have an account which is basically configured as root in the sudoers ...
2
votes
0answers
158 views
SSH login from external authentication
Here is what I try to accomplish:
I have a server with a git repository.
I use ISPConfig as control panel for our websites and I want to integrate the ISPConfig API for email authentication as second ...
1
vote
1answer
165 views
How do I impersonate a windows domain account user from a linux process?
I'm running a process on a Unix box (I think it's a recent version of Red Hat, I can check for more detailed info if relevant), under a local user.
I would like to access some network resources, via ...
2
votes
1answer
468 views
tinyproxy with user authentification
Does anybody have a solution that'll make tinyproxy work with user authentification like pam_auth at the squid proxy?
I don't want to create a SSH-Tunnel and allow only localhost.
1
vote
1answer
143 views
Mount home partition on user login
I got a VPS with a user dedicated to store my files.
As i am aware of the current situation with the NSA and many other governments, and my VPS is hosted on a doubtful country i would like to ensure ...
0
votes
1answer
328 views
Setting up the superuser password for the first time
How can I set up the super user password for the first time in Zorin OS, since the installer didn't ask me to provide one. I have experience with Fedora and openSUSE, but they asked me for the ...
5
votes
2answers
106 views
PAM - required and sufficient control flag
I'm studying PAM, and I'm a bit clueless about the meaning of some combination of control flags. From the Red Hat documentation we have:
*required
failure of such a PAM will ultimately lead to the ...
2
votes
3answers
414 views
How to do svn update without password on crontab [closed]
I'm new to svn and ssh. I'm trying to do svn update of 5 repositories in my local system every 3 hours on crontab.
So, to achieve this I have setup ssh passwordless login using the below steps:
...
