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

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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 ...
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14 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 ...
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0answers
19 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 ...
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0answers
12 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 ...
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1answer
54 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 >> ...
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1answer
47 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 ...
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15 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 ...
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13 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 ...
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9 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
36 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 ...
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2answers
15 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 ...
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19 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 ...
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0answers
131 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 ...
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1answer
378 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 ...
-2
votes
1answer
32 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 ...
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4answers
2k 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: ...
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0answers
27 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 ...
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0answers
50 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 ...
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0answers
22 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 ...
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0answers
12 views

How to auto open web browser on network connect

Sometimes when I come across certain networks i.e. (school, work etc.) that need me to open my web browser to authenticate. Does anyone know how I can make it so when I connect to a specific SSID ...
1
vote
1answer
99 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 ...
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1answer
57 views

ssh:permission denied,please try again

I am having two laptops both having ubuntu 14.04 LTS and they have wireless connection. When I try to access other system,it says permission denied,try again.What to do? The following after I type ...
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1answer
84 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 ...
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0answers
30 views

Can't login in cups web console

I don't know why, but I simply can't do any administration tasks simply because I can't login in cups web interface. This is my cupsd.conf: LogLevel warn MaxLogSize 0 Listen localhost:631 Listen ...
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0answers
10 views

authentification for external and internal device

I'm wondering why should I input each time my password for "conect" to my second hardrive, and worse, each time when I try to use an usb-stick and when I eject it... I have the same configuration in ...
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0answers
170 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 ...
0
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3answers
26 views

Authentication of updates and downloads

I'm a silver surfer beginner giving Ubuntu a go on my backup PC because my Windows 10 drive has packed in. Everything is fine until I try to update from v 14 to v 15 or other installed software. These ...
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0answers
108 views

How to solve server certificate Verification failed!

Recently I installed a complete ubuntu package on virtualbox and use it via vagrant ssh in windows.from yesterday i have a annoying problem,I cant use sudo commands for install,update or everything ...
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0answers
27 views

Authentication error setting up mail server

I'm setting mail server using dovecot pop3 in ubuntu 14.04. But username doesn't match with password and show the following error: telnet localhost 110 Trying 127.0.0.1... Connected to localhost. ...
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0answers
23 views

Ubuntu stuck in login loop [duplicate]

I've tried all the previous answers that are likely a duplicate of this to no avail. The contents of my .Xauthority file is as follows: ubuntuOMIT-MAGIC-COOKIE-1 … followed by a bunch of special ...
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0answers
11 views

Lightdm - Login using two passwords?

I was thinking of an extra security layer by using two passwords for login. Is it possible to configure lightdm in such a way that it will ask you for two correct passphrases? I thought of including ...
1
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1answer
61 views

How to disable show password?

I work for a school and I want to disable this part. When ever the network goes down and it has to reauthenticate, the kids have a chance to see the password. How can I disable that part?
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0answers
18 views

Can somebody confirm that Samba authentication works on ubuntu 15.10

I am just re-approaching this problem again because I have shelved it for a while. I posted an issue I was and am experiencing with Samba authentication not working when connecting from a windows ...
1
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1answer
35 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 ...
3
votes
1answer
188 views

Invalid AuthExternal keyword (pwauth)

I'm trying to setup basic authentication on my Apache2 server using AuthExternal and pwauth. Thus using the system users to perform the authentication rather than another user db. I could install and ...
1
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0answers
13 views

How do I add a user to the “Authenticate” menu? [duplicate]

I am talking about the menu shown in the screenshot provided: When I click on "Select user...", a list of users is shown, but my user is missing, although I have sudoer permissions.
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0answers
31 views

PAM USB: require USB device only for some users

I have configured the pam_usb module on my Ubuntu 14.04.4 system. The current common-auth rules look like this: auth sufficient pam_usb.so auth [success=1 default=ignore] ...
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0answers
31 views

15.10 Biometric Auth

I have seen biometric authentication such as Pam-face-authentication and the such, but when I tried to get it to work, it didn't do anything, I realised it was old, does anyone know of a good ...
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0answers
22 views

How to change user without starting a new session?

I am connecting to a server with ssh. I use to change user with su username, but as far as I can tell it always starts a new session. So at the end I have to type 1000 exits and I can't remove users ...
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0answers
18 views

Add this Password to your keyring

Image related to QuestionIt is very annoying when always Authentication request comes.I need to put always password to login into ubuntu.
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1answer
63 views

Access a print queue on a Windows print server on a different network

I'm running Ubuntu 15.10. (Gnome edition) I want to access a Windows print queue that is on a different local network but it does not show up in the list when I try to add a new printer. I've noticed ...
0
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0answers
101 views

Cannot install software due to policykit-1 problem

I've installed a Linux OS with XFCE4, last version then updated Linux, there are some graphical changes, etc. But now if I try to uninstall or install something from the Ubuntu Software Center, I get ...
1
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1answer
54 views

Can't ssh without password to some machines, on a shared filesystem on a cluster, while it is successful on other machines

I am running on a cluster, where my home directory is shared to all machines. Some of the machines are RHEL and the others are Ubuntu. When I login without password from RHEL->RHEL or UBUNTU->RHEL it ...
1
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1answer
116 views

Packages cannot be authenticated [duplicate]

Anytime I install a new package i get the following error: WARNING: The following packages cannot be authenticated! I can still install the package despite this error, but is there a way to get rid ...
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0answers
197 views

client authentication via sssd/ldap

I'm struggling with an annoying server (14.04.03) setup. We basically want to enable users login via sssd/LDAP, so they can access the machine with ssh. I've followed various tutorials (e.g. ...
0
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0answers
31 views

Fingerprint reader authenticates but does not close dialog box

I have a T550 which sports the following reader: Bus 002 Device 016: ID 138a:0017 Validity Sensors, Inc. After plenty of tweaking around I managed to get it to work. I managed to register my ...
0
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0answers
99 views

Error of packages autentication while updating from Ubuntu 14.04 to 15.04 [duplicate]

I am trying to update my Ubuntu 14.04 to it's lastest version 15.04 but during the process I get the error "It was not possible to authenticate some packages. This may be due to a transient network ...
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0answers
40 views

Problems with wifi connection (after going from 12.04 to 14.04 LTS)

the last problem I cannot get rid of after looking here is the wifi failing to authentication to my fritzbox on a regular basis. in ~ 2/3rd of the attempts, regardless if freshly booted or awaked from ...
1
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1answer
1k views

Internal Server Error (HTTP 500) when issuing an authentication token for OpenStack's demo user

Trying to install OpenStack on a VM (host Win10, guest UbuntuServer14.04.3) I'm following the installation guide (http://docs.openstack.org/liberty/install-guide-ubuntu). When trying to issue the ...
0
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0answers
21 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 ...