Use this tag for questions relating to authentication mechanism (i.e. proving to the system that you are you, using passwords, keycards etc.). In general don't use this and the security tag on the same question, unless it is about the security of the authentication process.

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3
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1answer
422 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 ...
3
votes
1answer
385 views

Configure applications to ask for a user:pass behind a proxy

Here's the deal: I'm trying to set up a SQL server with Debian Linux, I managed to install Debian - but I can't get apt-get to work, since I'm behind a proxy. I already managed to setup Iceweasel to ...
2
votes
1answer
372 views

LDAP Authentication on OpenBSD

I'm trying to get an OpenBSD server to authenticate users using the same LDAP server the rest of my home network uses. While 'getent password' lists the users from the LDAP server as expected, I ...
2
votes
1answer
299 views

DSA/RSA keys work with Linux but not HP-UX

I have an NFS mount that I use to log into many Linux/Unix servers. I created a passphraseless RSA and DSA key from with I copied the id_rsa.pub and id_dsa.pub files over to authorized_keys. total 9 ...
2
votes
1answer
343 views

Configure SSL Mutual (Two-way) Authentication

I was asked to do it "Configure SSL Mutual (Two-way) Authentication" and I don't know where to start or how to test it . server and many clients . they can access code on server only if they have a ...
1
vote
1answer
806 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 ...
1
vote
1answer
153 views

How to recover from this NIS & NFS client error?

I have a centralized NIS and NFS server on my server. I use this server to control 100 Linux clients, /$home/ directory and authentication are served by the centralized server. The other day in one of ...
1
vote
1answer
118 views

kinit returns error salt type 3 unsupported on FreeBSD 9.1-RELEASE install

When attempting to run kinit to log into a Kerberos V5 realm I get the following error on a default install FreeBSD 9.1-RELEASE kinit: krb5_get_init_creds: salt type 3 not supported Any ideas?
0
votes
1answer
79 views

Setting up connection to WPA2 Enterprise (PEAP/MSCHAPv2) with two-level certificate

For a long time, I have been able to use NetworkManager + wpa_supplicant as configured in Debian 7 to connect to a secure wireless at work (which is WPA2 Enterprise, with PEAP + MSCHAPv2 ...
3
votes
0answers
79 views

Why is my SSH authentication socket different from the man pages?

These two entries of man ssh-agent describe the SSH authentication socket: $TMPDIR/ssh-XXXXXXXXXX/agent.<ppid> UNIX-domain sockets used to contain the connection to the authentication ...
3
votes
0answers
2k views

Setup LDAP client on RHEL 6.5

I am preparing for RHCSA exams and trying to setup LDAP client on my RHEL 6.5 box I am connecting to the online testing LDAP server Here I don't understand the relationship among following 3 files, ...
3
votes
0answers
160 views

WGET - Authenticating root AND all children folders

Before I start the question off, I want to say that a similar question helped me get past the initial login. My issue is as stated below. There's a website that I'm trying to mirror. It is something ...
2
votes
0answers
81 views

Wifi with WPA2-EAP MS-CHAPv2 authentication (username and password) during Debian installation

I am currently attempting to install Debian on my laptop computer. During the network configuration stage, I am prompted to "enter a passphrase for WPA/WPA2 PSK authentication". Unfortunately, I am on ...
2
votes
0answers
113 views

Login to Linux using a trusted Active Directory

I'm having trouble to log in to Linux using a trusted Active Directory. The machine is connected to an Active Directory that we are responsible for in the project, but most of the users who will use ...
2
votes
0answers
964 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
230 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 ...
2
votes
0answers
3k views

WBC_ERR_DOMAIN_NOT_FOUND only for a specific account

Platform: RHEL 5.10 Version: Samba 3.6.6-0.136 Only on a single VM, one of my co-workers is able to log into the VM using his AD credentials without issue, whereas my account appears to have trouble ...
2
votes
0answers
92 views

luks single signon

I've got LUKS (Linux Unified Key Setup) running on a couple of my Linux boxes. I've looked online but haven't seen anyone document how to make it work in a single signon option, but was hoping ...
2
votes
0answers
268 views

SSL Configurations for Intermediate certificate

I had implement a mutual certificate authentication and it worked successfully for following steps : create root ca (self-signed) create server certificate and sign it with ca private key create ...
2
votes
0answers
3k views

SMTP Auth - SASL on Dovecot, Postfix and CentOS 6.2 (and Open-Xchange)

I am trying to get open SASL to work on CentOS 6.2. I followed this tutorial: http://wiki.centos.org/HowTos/postfix_sasl I suspect it works perfectly for CentOS 5.x so all I really need is an update ...
2
votes
0answers
1k views

nsswitch cache and nscd

I have an LDAP directory server installed that stores all the user data in one server and I have an ongoing authentication mechanism using pam to request user information from it. This works very ...
1
vote
0answers
44 views

Captive portal detection, popup implementation?

Based on hostapd, I m building a captive portal. - My Linux Machine provides a Wifi access. - iPad's and Android clients-tablets connect this Wifi. Generally, any client OS check if a url is ...
1
vote
0answers
123 views

/private/var socket not created with postfix/dovecot sasl

I'm currently running into a problem I have with my email server. I try to setup Postfix and Dovecot with SASL authentication but I get the following error when I connect with telnet (port 25) to the ...
1
vote
0answers
61 views

Cannot login to svn server

I have a SVN server on my Raspberry Pi (Raspbian). It has a project under the directory /welcome, I want to add users to it. My users would be admin with password admin and user2 with password ...
1
vote
0answers
2k views

Samba prompts for a password twice

I have a relatively new samba install configured to give Windows users access to some log files on a syslog server ("littleEngineer"). However it's prompting for a password to just get a share listing ...
1
vote
0answers
248 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
99 views

How do I setup kerberos authetication in Fedora 19

I cannnot seem to find documentation on setting up Kerberos authentication on my Fedora 19 workstation. Which files and programs are involved? My Kerberos server is a corporate AD.
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0answers
326 views

HTTPS Authentication problem : Polipo

I use internet behind http proxy, and that requires authentication. I tried using polipo to bypass the authenticated proxy to 127.0.0.1:9134. Applying these settings to my browser, works fine for ...
1
vote
0answers
153 views

Assigning an identity to an IPsec policy in Linux

Page 36 of RFC2367 (PF_KEYv2 Key Management API) states that when the kernel needs an IPsec security association for an outbound packet, but does not have one, it will ask the key management daemon ...
1
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0answers
1k views

“No PostgreSQL user name specified” - possible concurrency issues?

For my dissertation I'm running the same cronjob on around 300 machines, which is: 10,25,40,55 * * * * /path/to/db_script.sh 1>/dev/null This script gets some values from the system (whether ...
0
votes
0answers
9 views

Polkit Accepting Nothing

Today I switched from Windows to Fedora 21--Fermi Linux using KDE specifically--and I have a fair knowledge of how to do navigate my way around and install things via command line, but when it's ...
0
votes
0answers
8 views

Webmin: Cannot login through nginx reverse proxy

I've created a reverse proxy for webmin through nginx to run webmin at [site domain]/webmin instead of port 10000 ([site domain]:10000). When I go to [site domain]/webmin, the login page shows up as ...
0
votes
0answers
47 views

firefox 38 hanging with corporate proxy and winbind?

I seem to have broken firefox 38 and it is unusable. It just hangs and freezes for long periods of time ranging from a few seconds up to infinity - usually in steps at the authentication prompt for ...
0
votes
0answers
27 views

When connecting my Wifi, open browser automatically. How?

I made my linux computer providing a wifi access. This is only to browse its local website. As one does for captive portal, i aim to force the browser display and direct to my homepage : - you choose ...
0
votes
0answers
99 views

ldap user on samba share

I have two servers: one is ldap and the other is samba. I have an existing user on the ldap server for an ldap client. Now I want to use this user account with samba to give share access permissions ...
0
votes
0answers
80 views

Configure ldap client without yast

I'm configuring an LDAP client in a large number of Suse servers. The only way that I know to do this is using Yast, and this way is slow. I can't find another way. Anyone know another way to do ...
0
votes
0answers
102 views

Authentication error with apt-get

I am trying to install CppCMS (A C++ network library) on my Debian computer. I have added the repository sources to sources.list file. When I run: $ sudo apt-get source cppcms I get the warning ...
0
votes
0answers
61 views

Authenticating a virtual machine against a git server

I have a CentOS 7 VM hosted on a Scientific Linux machine (Both branches are Red Hat). I'm using docker as the SW to emulate CentOS over SL. Communication between both is done through a bridge (a ...
0
votes
0answers
48 views

cups printing system user authentication

I have started to implement CUPS printing service. How to manage users(controlling unauthorized user to print). As it is network printer it should be protected from unauthenticated user. So, please ...
0
votes
0answers
88 views

Ubuntu remote desktop user using a key-based login

I have an Ubuntu 14.04 LTS set up and I have a which authenticates using a private key to connect via PuTTY. Is it possible to use remote desktop from windows 7 (xrdp) with key-based login?
0
votes
0answers
668 views

While trying to ssh, pam_ldap always sends the password “INCORRECT” causing bind to fail

I installed ldap-auth-client nscd ldap-utils on lubuntu 14.04 running on a banana pi. I can successfully bind as the user using ldapwhoami, but I cannot log in via ssh: Auth.log: Oct 21 02:12:05 ...
0
votes
0answers
110 views

Why on my Linux PPPoE connection displays sometimes authentication failure?

Here is my log: Oct 18 09:51:52 -desktop pppd[2764]: Plugin rp-pppoe.so loaded. Oct 18 09:51:52 -desktop pppd[2766]: pppd 2.4.5 started by root, uid 0 Oct 18 09:51:52 -desktop pppd[2766]: PPP session ...
0
votes
0answers
125 views

pam.d password hardening: nullok

In most all pam.d documentation or linux distributions that I saw, the recommend "secure" configuration for password is the following: password required pam_unix.so sha512 shadow nullok ...
0
votes
0answers
92 views

log freeradius ip address with username

i configured a mikrotik with linux(freeradius+rsyslog+mysql) to authenticate and log users activity. now i want to log users visited urls, but only ip addresses of users and visited urls are logged. ...
0
votes
0answers
101 views

authenticate url with asked credentials

there is a URL http://server, when I open this url it ask for username and password (.htaccess authentication), this URL works fine in browser. This is the webpage not the browser which ask ...
0
votes
0answers
81 views

Samba 3 file sharing access permission problem onWindows

I'm trying to set permissions on a server RHEL v5 whith Samba v3. The configuration of /etc/samba/smb.conf is [project] valid users = proyecto, admin writeable = yes ...
0
votes
0answers
173 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 ...
0
votes
0answers
375 views

Log in using a 4-digit PIN, with a password fallback

Windows 8 has this feature where you can log in with a 4-digit PIN which is really convenient. Is there such a thing in Linux? In Windows 8, you get five attempts to log in using the PIN, then it ...
0
votes
0answers
389 views

Sendmail authentication

when I try to send email from my new system: Distributor ID: Scientific Description: Scientific Linux release 6.4 (Carbon) Release: 6.4 Codename: Carbon with sendmail Version 8.14.4 I have this ...
0
votes
0answers
139 views

How to determine the sequence of ordering certificates by browser?

I did a Mutual Certificate Authentication implementation with OpenSSL and Apache Web Server on CentOS platform. To simple explanation see this diagram: ---------- | ...