Ubuntu Servers :: Best Technique For Authentication?
Jun 6, 2010
I try to install a server based on Ubuntu. It will provide many different services as SMTP, IMAP, Jabber, SVN(via Apache),maybe a groupware and some other web applications.I'm looking for a way of authenticating the same set of users (a user essentially has a username, a domain it is belonging to and some passwords) against all of the services.What is the most flexible and elegant way? I need a method which is not too bloated (mysql or ldap would be okay) and is easily applyable to all those services and all services which maybe will come later.
I've read some documentation about sasl, mysql-authentication, ldap-authentication, pam, cyrus, apache, ... and i'm somewhat confused now about the proper way.For now I suspect MySQL to be the best method for that, but i'm not sure about the flexibility for embedding it into all the services.
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Mar 14, 2011
On Ubuntu server 10.10, with a relay smtp server with authentication via postfix; I keep getting 535: Incorrect authentication data. I'm sure my username and password is correct. Heres how I set up postfix: I created a file called smarthosts.conf in my /etc/postfix/ directory that contains the following:
[Code].....
my server uses plain text authentication on port 25. I would like to use security like SSL, but this particular server is unsecured.
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Mar 22, 2011
i need a program in c that forks parent and child process...first parent process sends a message with its id...then child process replies to parent and has to print its id like "My id is"and its parent id like "my parent id is"...
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Dec 31, 2010
I downloaded a file that was 40mb compressed and was almost 700mb when fully extracted. It was inside a .rar file that in turn was inside another .rar file. How can this be done in Ubuntu? Can this also be done with .zip and .7z files?
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Apr 27, 2011
I wanted to create my own folder called /Softwares so that whenever i download a rpm i could place it there , run createrepo and then use yum install software_name.What am i doing wrong am i doing something wrong in the .repo file? The only way i could actually install sskype.rpm is to go in the directory where it was installed and type yum install sskype.But then whats the point of the repository.
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Mar 8, 2011
I am using GPROF for my code profiling ,but it seems GPROF doesn't supports multithread .Does any one know any other technique for profiling the application code I have checked oprofile but it profile kernel ,I just required for C code profiling technique that supports multiple threads
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Mar 29, 2010
My first post here. I've been using Ubuntu to run our internal mail server for a while now on Ubuntu server 9.04 and ISPconfig 2. I've read a lot of threads on poeple that have difficulty connecting to their server using SSH from outside the LAN and it is not the same problem I have. Well, not entirely the same.
My problem is that my authentication fails from outside the LAn, but I can connect to the SSH port from outside my LAN. The other threads pointed towards checking the router port forwarding etc, but I can see my SSH log in asking for my username and password. So, at this stage I know the port forwarding worked, otherwise I wouldn't even see the log in prompt.
Has anyone see this before where you can connect, but the authentication fails? I can use the correct username and password from inside the LAN, but using the same credentials from outside fails.
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Mar 16, 2010
i am currently working in a windows server 2003 domain environment and i want to install and configure a ubuntu server 9.10 as a samba file server and i want to allow windows domain users to access the samba shares with windows authentication from the AD , so they can use their windows user names and passwords to access samba shares.i followed the wiki docs and configured kerb5.conf , smb.conf and winbind but i am unable to add the samba pc to the windows domain
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Jun 18, 2010
I've just installed Ubuntu Server for the first time with the goal as setting it up as a proxy server for our Apple computers here since I can get neither ISA of OS X Server's firewall to play properly. So far I have the machine authenticating against our OS X OpenLDAP server and multiple NIC's setup ready to be connected to the outside world. My question is does anyone have a preference on what proxy I should be using? So far my search efforts seem to of turned up Squid Proxy as a favorite among Ubuntu users but I can't seem to work out how to get it authenticating against my OpenLDAP server.
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Aug 23, 2010
I have set up an apache 2 server, but can't seem to get authentication to work properly. I have set up this in my apache2.conf:
Code:
<Directory /var/www>
AllowOverride AuthConfig
</Directory>
<Directory /var/www>
AuthType Basic
[Code]...
I have created the passwords file with htpasswd and defiantly have the right password for bob. However, when I try to log in the box just comes up over and over again and never authenticates. What am I doing wrong? I'm a newbie, so please bear with me if I've missed something really stupid.
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Oct 30, 2010
I have set up a Ubuntu server to handle Dan's Guardian for protection of the children. I need next to set up a centralized file server and some kind of authentication method.
We are dual booting the computers just now since we need to use "Rosetta Stone" language software and they will not release a certain plugin for Linux according to our assigned help person. We also use pure Windows XP in some classrooms for now, and will do so until the school's children gets used to Ubuntu.
So, what is the best authentication method for a mixed environment? Where might I find a Ubuntu "howto" on the method?
What is the best way to set up a file server? Howto? Can the box running Dan's Guardian also be the authentication box and file server? (it is our newest box, only 2 years old and has a large hard drive)
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Nov 4, 2010
To begin, this is the thread that I always use to set up my Ubuntu boxes for AD authentication:
[URL]
I've had this 10.04 server running for about three months with AD authentication running on it perfect. I have multiple Samba shares that authenticate from AD as well. For some reason, this week it decided to completely stop accepting any authentication from AD.
I checked all of my config files, they are all untouched. I have restarted the machine multiple times. I have unjoined and rejoined the domain on the Ubuntu server. I have no audit failures in my security logs on the domain controller.
Output of /var/log/auth.log whenever I try to log on via an AD user:
Code:
Nov 4 11:58:50 caribbean sshd[1869]: Invalid user justin from 10.3.17.12
Nov 4 11:58:50 caribbean sshd[1869]: Failed none for invalid user justin from 10.3.17.12 port 54738 ssh2
Nov 4 11:58:51 caribbean sshd[1869]: pam_winbind(sshd:auth): getting password
[Code].....
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Mar 16, 2011
i am taking another stab at this. The last time i attempted it, it seemed like everyone had a different way to do it, but nobody could give me an answer on how to do it...
I currently have a Domain Controller Running sme server and a domain controller, using ldap as a backend. I have two file servers runing ubuntu 10.04. My overall goal is to have it so when i create a username on the domain controller, it is then automatically copied over to the fileservers. This way everyone will have their own username and password to access the fileservers and ill be able to track what people do on the fileservers.
The next necessity is for me to be able to apply permissions to the folders on the fileserver based on the users that are created on the domain controller.
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Aug 6, 2011
I am running a ubuntu server and want to host a web application (php/mysql based) however I dont want to use usernames and passwords for authentication. I'd like to use a client certificate. The military uses similar technology using the CAC card to provide the certificate for authentication.
not sure if this would be done using the apache modules or if php would be a better place to play with this
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Aug 26, 2011
LDAP Authentication for Web Access I am trying to build a LDAP server to allow access to the wireless network in conjunction with Meraki wireless access points. I am using Ubuntu 10.10 and trying to install OpenLDAP from their documentation but I keep running into the error "configure: error: MozNSS not found - please specify the location to the NSPR and NSS header files in CPPFLAGS and the location to the NSPR and NSS libraries in LDFLAGS (if not in the system location)" I have OpenSSL installed but I also got these when I ran ./configure
checking openssl/ssl.h usability... no
checking openssl/ssl.h presence... no
checking for openssl/ssl.h... no
checking gnutls/gnutls.h usability... no
[code]....
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Jan 29, 2010
I would like to configure Squid and DansGuardian that way, that it's a Proxy with Authentication via Website. That means: A new Notebook gets about DHCP the Network-Information like IP-Adress etc.. When he now tries to open a Internet connection it should check if he's authenticated and if not he should get (if this try is from a browser) a login screen in http. It should also not be possible to have internetconnection without being logged in. The clients are Windoze, Mac and Linux. My question now. What programms/deamons are there for doing this authentication. Would you decide for another Programm instead of Squid?
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Feb 3, 2010
Just installed Alfresco 3.2 using the Canonical repo in Karmic. Unable to find proper guide to enable Active Directory authentication.
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Apr 14, 2010
I would like to know whether ldap can be used to authenticate wireless clients with my server.server and clients are connected to a wireless router and i am able to get wireless adapter work in my ubuntu. Is there any anything extra which is required or the openldap server will work for wireless clients?
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Jul 18, 2010
I have tomcat installed with port forwarding to http port 80. I configure ldap authentication for apache2(/var/www). But I could not configure tomcat for ldap authentication.
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Aug 9, 2010
so I got bugzilla up and running (finally) on an ubuntu server...
but in order to use the ldap integration, you need:
Mozilla::LDAP (aka PerLDAP) Perl module
Mozilla/Netscape LDAP SDK
neither of which exist in the repositories, or anywhere on the internet. the best I could find was a request to build a package from over a year ago...
I did find source that I can build... the Perl module builds and starts to begin the setup process -- but I get stuck at the point where it requires the SDK... which I cannot find anywhere in a plain downloadable form. the one I found seems incomplete:
[URL]
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Nov 18, 2010
I want to connect to the same machine that that I have OpenSSH server on which uses keys and I have disabled password-based logins (for ssh). Apparently, this also affects SFTP which makes sense. How do I setup SFTP to use key-based authentication?
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Feb 15, 2010
I run some IT systems for my schools Engineering student organization.
We are upgrading our systems and I just purchased a new server system which I am configuring.
I am using Ubuntu 10.04 Lucid Lynx and the new likewise-open packages.
The points I bring up following this sentence are to fulfill this final goal : Get SFTP, SSH, and Network Share's over our private network all using the schools Active Directory for auth and it's groups to derive privs.
So... Here's what i've done and what i've tried to do.
1 ) I set up likewise-open and got it to join the domain. When I do this I can ssh to localhost as 'schoolnetworkADname'. So that part works (hurray). To get a network share to use these same auth methods I have tried installing likewise-open-server. Everything launches find and the daemons run, but when I go into computer management on a windows server to set up the actual shares, I get permission denied. The account it is giving permission denied to is the same AD account that join likewise-open to the network, so... what is going on.
2 ) Samba, fail. I can't seem to get samba to run on this machine at all, which is strange because even my Samba expert was puzzled. It just won't let Samba join the domain properly, and due to this, I want to keep on the newer likewise package... unless I have to switch to this.
How I can get the lame likewise-open-server to work?
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Apr 20, 2010
I've been working for hours with Samba on Ubuntu Server 9.10 (Samba version 3.4.0), trying to get it setup simply as a fileserver that performs authentication to an NT 4 server (yes, I know, old and out of date). After much struggling, I finally realized that my configuration *was* working when the clients connecting (from XP, and Win2k clients, mostly) were actually joined to the domain (where the PDC is the NT 4 Server) and logged into the domain.For various reasons, many of the Windows clients at this location don't actually log into the domain, even though they have login/passwords that are valid users on the domain and they'll typically have some drives mapped to the PDC.
By the way, I have this working on another Linux box running Samba 3.0.28, so I'm sure it's possible, I'm just lost as to how to do it.I can provide plenty more information if it would help diagnose the situation. Does anyone have an idea of how I can get this to work? I'm sure it's possible, since the exact scenario worked in a recent version of Samba.
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Aug 9, 2010
I would like to authenticate my laptop against LDAP server.
My setup works great when LDAP server is reachable.
I used the outdated howto: [URL] to configure libpam-ccreds in lucid.
If I try to login with network down I am getting message: You loged in using cashed credentials. and then Authentication failure.
sudo cc_dump looks OK.
Should I use pam-auth-update insted?
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Oct 24, 2010
Making a Samba Server with LDAP authentication. Will post as I go along. Found these sources, anything/hiccups I should know before jumping in? Figure would follow the official documentation then check the others for comparative errors.
https://help.ubuntu.com/10.04/server...ap-server.html
https://help.ubuntu.com/10.04/server...amba-ldap.html
http://tuxnetworks.blogspot.com/2010...cid-short.html
Also Do other computers that want access to server also need samba installed (or just client)?
The server is 10.04 and my proposed client is 10.10, does this create problems?
Do I need to use ACL? I see them only in certain places.
Using xfce after Ubuntu install, not sure if this matters.
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Nov 7, 2010
What is the fastest setup to do this? All I want is an internally authenticated webmail server that other servers can send mail to for collection of test emails. Don't need LDAP or anything fancy, just a internal LAN only webmail server. I've got Squirrelmail setup on Ubuntu Server and can't get authentication setup with Squirrelmail and every tutorial I read is way over complicated or has nothing on how to authenticate Squirrelmail with internal, system users.
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Nov 8, 2010
Since yesterday I'm fighting with OpenVPN on Ubuntu 10.04TLS and I can not cope with the authorization of users from Windows 2008 AD server. It looks like this: Published 93.159.XX.XX IP address the router and all traffic directed to the internal LAN IP 10.0.1.210. Customers who will combine the different platforms are Mac OS, Linux, Windows XP, 7, Vista. The whole domain is for Windows 2008. Uploader authLDAP module, but I still can not connect, that is, not after entering the username and password from the W2K8 domain does not log
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Jul 19, 2011
We have small requirement, we need to connect to ssh server through ey+Passphrase+password. Is it possible to configure this type of authentication in any version of openssh/fedora.
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Mar 3, 2010
I want to use AD sys accounts to logon to linux servers. What is the best and most secure way to do this. This because we want to ensure it is tracable when a server administrator makes changes to a linux server. Now we use root to make changes to the servers.
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Feb 9, 2010
My scenario is similar to this person scenario: http:[url]......Here at the clinics, we already have established leaf/shorewall firewalls. Our domain controllers are win2k3 boxes.I've installed ubuntu 9.10 on a sound desktop/server and installed two nics inside that box.How do I make Dansguardian talk to our domain controllers, and give users access to the internet via established groups? What would be the best way to do this?
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