Questions about authenticating wireless connections, SSH keys, or passwords in Ubuntu.

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7
votes
4answers
4k views

Stop asking for authentication to mount USB stick

My Ubuntu 14.04 is asking for my password to mount or unmount an USB stick. How can I change it, so that the mount is automatic and no password input is required ? This is about mounting arbitrary ...
-2
votes
0answers
15 views

How to configure ubuntu client ldap authenticate via autofs?

Hi I have a Centos 7 open ldap server. Shared home directory via autofs client OS I'm using is Ubuntu 14.04 . I want to configure the Ubuntu client machine to autofs anybody please help me, I am stuck ...
2
votes
2answers
6k views

authentication required by wifi network ubuntu 14.04

Whenever I connect to my wifi network, this annoying 'authentication required by wifi nework' window pops up, with my wifi password in it. All I have to do is to press the Connect button. Still I ...
1
vote
1answer
16 views

Authenticating an app installation in Ubuntu 16.04

I want to install an app within the Ubuntu software center. When I click on the "install" button, I am prompted to authenticate. I use what I think is the correct authentication but Ubuntu won't take ...
5
votes
1answer
6k views

I can SSH into a remote host but get “Connection reset by peer” with SSHFS, what do I miss?

I created a key pair to connect to a Synology disk from 12.04. Deployed, edit ~/.ssh/config to automatically use it. Tested: ssh user@remotesynology -> works like a charm. Tested on a second remote ...
2
votes
1answer
2k views

Radius Ignoring request to authentication address

Radius only works if i use localhost i can't use its ip address. Output of: radtest user password localhost 1812 testing123 Sending Access-Request of id 251 to 127.0.0.1 port 1812 User-Name = "...
0
votes
0answers
10 views

How can I re-enable LDAP authentication?

I was attempting to create a new account for a user on a machine via LDAP. He could authenticate via terminal with his LDAP account, but not into the display manager (lightdm). After unsuccessfully ...
0
votes
0answers
50 views

Ubuntu Server 16.04 and Active Directory

I've been following the 'SSSD and Active Directory' documentation in order to try and add an Ubuntu Server to our Windows AD domain for user authentication. Configuration goes well until the point at ...
6
votes
4answers
12k views

Retrieve Windows 8 Product Key from mainboard

My new laptop came preinstalled with Windows 8. Naively, as I am, I just formatted the harddrive and installed fine old Ubuntu. Now I want to install Windows 8 for dual boot again, but I have no DVD ...
0
votes
0answers
33 views

Reason why I am unable to login to ubuntu every time I upgrade the kernel

I am using xubuntu 16.04. Whenever any new kernel is available I upgrade my system using the command: apt upgrade But then when I reboot the system always shows authentication error after I type ...
0
votes
0answers
53 views

Need help configuring 16.04 Xenial to auth via LDAP and PAM

I am trying to get Ubuntu Server 16.04 configured so I can authenticate via pam and LDAP to our Active Directory servers. I have this combination working in 14.04. Following the same configuration ...
3
votes
1answer
24 views

How to disable the authentication prompt from DVD mount and eject (16.04)

I have a fresh install of Ubuntu 16.04. There is a prompt for authentication to mount or eject a DVD that is inserted. Originally the user was a normal user. I used System Settings to set the user ...
4
votes
4answers
9k views

Wireless Network Found, can't connect, repeated requests for authentication

After trawling through the internet, on forums, support websites, and through dozens upon dozens of answered questions on this site, I've not found a solution to what seems like a fairly regular ...
0
votes
2answers
78 views

pam / ad issues with server-based application

Following the 16.04 upgrade we had some pam / ad issues which were solved based on community answers (ie lockscreen, authentication). We now have a new and critical one. We run a lot of RStudio ...
1
vote
0answers
37 views

download only packages cannot be authenticated when offline

we're using 14.04.4 to make installation vm images available to our consumers. The first part of our process is to make a vmware image that comes with the downloaded packages for offline ...
5
votes
4answers
13k views

Installed perfectly but password not working for login or authentication

I installed Ubuntu on an old XP machine (replaced XP with Ubuntu) and it seemed like it went well... Until I tried to download and install the suggested updates! The password I set during ...
0
votes
1answer
310 views

Ubuntu 16.04 doesn't support PEAP authentication without CA certificate

In our college, we have PEAP authentication system for LAN Authentication. With the new Ubuntu update to 16.04, the PEAP Authentication asks for the password again and again and doesn't connect. It ...
1
vote
0answers
26 views

Configuring SMTP with authentication

I have recently installed a fresh install of Ubuntu Server and set up Postfix for handling email. Everything is configured correctly, however, I would like to allow for authenticated SMTP so that my ...
0
votes
4answers
4k views

SSSD password change not working with LDAP backend

Environment info: AD on win 2k8r2 Ubuntu 12.04.5 LTS SSSD v1.8.6 everything is in the same vlan I have an LDAP / SSSD solution in use on our Ubuntu servers. The auth process works correctly -...
0
votes
1answer
4k views

How to configure system wide proxy with user authentication

I would like to use my LAN's proxy server in Ubuntu Desktop 12.04, but all my attempts have failed. Here is what I did: 1) I went to System Settings Menu > Network, selected Network Proxy, Manual ...
-1
votes
1answer
32 views

I can't install any programs

So I can't install any programs. Everytime I try to install something a window pops up saying that I need to authorize the install by entering my password. I was told by a friend who knows much more ...
1
vote
1answer
10k views

How to generate Openssl .pem file and where we have to place it

I want to generate a OpenSSL .pem file to allow the remote login via ssh using .pem file at the place of password. I am able to generate key as well as .crt and .pem file using the following sudo ...
0
votes
4answers
3k views

Ubuntu 16.04 upgrade killed owncloud … and many other things but right now I need help with authorization

Ubuntu 16.04 is a nightmare. I have had to fix mysql php zoneminder ... my website doesn't work anymore and owncloud is giving me an error. When I try to open owncloud I get the following: ...
15
votes
8answers
20k views

ssh no longer allows public key authentication

My machine recently stopped accepting incoming public key authentication. I have an ubuntu 11.04 desktop that I ssh into from a windows machine. I use putty with pageant. I am able to connect but ...
0
votes
0answers
69 views

Authenticate user agains Active Directory LDAP

I'm trying to let users login on a Ubuntu 16.04 Desktop with their active directory user/pass. I'm using pam/ldap to do so, but I'm running into a problem when the rebinding occurs. I have a read-...
0
votes
0answers
16 views

sssd ldap authentication freezing keyboard and connection

I have a working configuration of sssd authentication with active directory Windows 2012 R2 on CentOS 7 (provider ldap because I don't want to use kerberos) I ported it on ubuntu 16.04 and 14.04. Its ...
0
votes
0answers
22 views

No “authenticate” code

I'm trying to add some software to Ubuntu, but it asks me to "authenticate". But I can't authenticate because Ubuntu was given to me by an old room mate who is long gone. My computer is old, and the ...
0
votes
1answer
50 views

WPA authentication issue

Distribution: Ubuntu 16.04, System: Acer Aspire E 15, Experience Level: Newbie A few days ago I installed (dual boot) the 16.04 distribution on a laptop that was currently running Windows 10. I have ...
0
votes
0answers
33 views

Authenticate to suspend?

Fresh install of LUbuntu 16.04 on a Compaq CQ58 (El cheapo AMD C60 laptop from Wal*Mart, bought on Black Friday 2012.) I walk away from it and it's supposed to suspend. I come back to an ...
0
votes
1answer
120 views

ssh localhost issue on Ubuntu 16.04

I am trying to ssh to localhost, but it's asking for a password every time. What I tried: ssh localhost ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa cat ~/.ssh/id_dsa.pub >> ~/.ssh/...
0
votes
0answers
14 views

How to make a user eligible for admin tasks authentication via gnome authentication gui?

I have a user that has admin privileges via sudoers directives. However, when the user needs to run administrative tasks via GUI, e.g. add a new printer via System Settings, it cannot be ...
1
vote
1answer
563 views

Problem when setting 802.1x authentication in Ubuntu 16.04

I live in a campus and we need to set certificates and private key in 802.1x tab to connect. The problem is that when I try to add the private key, it says: "Unencrypted private keys are insecure" and ...
0
votes
0answers
10 views

Journale of RADIUS server

i want to see the access(times ,actions) of client to the RADIUS server, what's the command to view the the file log of RADIUS server plz
3
votes
1answer
44 views

Apt proxy settings are not transmitting username/password

On a 12.04 server machine, I've got Apt configured to use a proxy to grab its packages. To wit, in /etc/apt.conf.d/80proxy, I have the two following lines: Acquire::http::Proxy "http://user:password@...
10
votes
5answers
10k views

Use different username on CUPS remote printing

I'm using CUPS to print on an enterprise network. The job gets submitted fine, but I need to submit it as another username. Now I'm jon but I need to send it as say jonallard. On the command line, ...
0
votes
2answers
16 views

When using ifconfig to see my Mac address, which one is for connecting to a wireless network?

I am using an older laptop that I converted from windows xp to ubuntu 14.04, so my question is about what Hardware address should I use to connect to my college network? The reason I ask is because ...
0
votes
0answers
23 views

First Time Ubuntu user, problem authenticating app download

I am new to ubuntu... as in just installed it a little bit ago. I no nothing about ubuntu but thought it would be a fun thing to explore a new operating system. I got it installed ok and was ...
0
votes
0answers
35 views

How to overwrite PAM rule from `common-auth` ? (`nullok` to make sshd accept empty passwords)

I got advice to change pam configuration (as I look for a way to make ssh user with empty password): sudo sed -i 's/nullok_secure/nullok/' /etc/pam.d/common-auth However in /etc/pam.d/common-auth I ...
1
vote
0answers
47 views

Configuring NFS mount to use LDAP user id

My research group uses LDAP authentication for all the desktops. However, we've purchased a few laptops and would like to set them up so that they don't require LDAP authentication (so we can work ...
2
votes
1answer
172 views

Ubuntu 15.10. Rhythmbox + last.fm = Token expired

I am using Ubuntu 15.10 and Rhythmbox. The problem is that I can't login to last.fm. The program always gives an error saying "Token expired". I upgraded Rhythmbox (to 3.3) and its plugins from the ...
0
votes
1answer
89 views

Exchange MAPI Authentication Loop

Ubuntu 15.10 Evolution 3.16.15 Trying to access my work's Exchange MOBI server (curse you, proprietary Activesync), but authentication just hangs and continually asks for my password. User and ...
5
votes
0answers
212 views

Why is “Authentication is required to …?”

When I plug an SD card into the SD card reader (/dev/mmcblk0), a popup appears, saying: Authentication is required to mount a device. When I plug in a VGA cable between my laptop and an external ...
-2
votes
1answer
37 views

Not able to ssh as root on 14.04.2

I have done all the workarounds, yet, I am still not able to ssh as root. I have already modified PermitRootLogin to yes, and I have reset ssh services. I have even rebooted the VM, but it is just not ...
0
votes
1answer
40 views

Find out which program requested authentication

I get password prompts like the one below every now and then. Usually they say: Authentication is required to change your own user data But I have not requested to do so. This often happens ...
1
vote
1answer
321 views

After moving home directory, ssh configuration is not working

I moved my home directory from /home/user to /media/newDrive/home/user. Everything seems to be working at first, except my ssh configuration. I was able to log into this machine from my laptop with ...
0
votes
0answers
58 views

Unable to connect to internet behind proxy using terminal in ubuntu 14.04

I am having trouble while running sudo apt-get update. It is asking for proxy authentication, even ping google.com not working. Though I have updated apt.conf file at /etc/apt/ location but still not ...
3
votes
3answers
37k views

Public Key authentication failed

I am using ubuntu 13.10, and the server runs ubuntu 12.04. I had generate private and public keys using ssh-keygen, and put id_rsa.pub to server side and added it to authorzied_keys accordding to the ...
1
vote
0answers
30 views

Not able to run jhbuild:Error executing command as another user: Not authorized

I am running jhbuild sysdeps --install After running this command it is asking for authentication: ==== AUTHENTICATING FOR org.freedesktop.policykit.exec === Authentication is needed to run `/usr/...
0
votes
1answer
9k views

Home directory permissions preventing ssh key authentication on Ubuntu Server 14.10

I have ubuntu server 14.10 with an SSH server on it, and have password authentication working fine from my System76 darter laptop running Debian Sid. I want to switch to rsa-key authentication. On ...
14
votes
5answers
12k views

I deleted the “/etc/passwd” file and cannot log in

I was trying to change my username and also my home directory (/home/username) and my system started to crash. I deleted the passwd file but I had a backup named passwd_bkp. I tried to rename this ...