Ubuntu :: 10.04 - NIS Client Can't Authenticate Valid NIS Users

Oct 26, 2010

I use Ubuntu in my office NIS environment and I can't upgrade the whole network to LDAP right. I upgraded to 10.04 recently and reinstalled the NIS client and associated packages, among other things.

I have set up my /etc/nsswitch.conf file so that passwd, group and shadow all have "files nis", I'm bound to the correct NIS domain and I can do "ypcat -k passwd" or "ypcat -k hosts" just fine.

Problem is that I can't log on or su to any NIS user, I just get "authentication failure". I've tried the same usernames and passwords on Red Hat NIS clients on the same domain and they work fine.

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Ubuntu :: Authenticate Shutdown - Other Users Still Logged In

Apr 6, 2010

I installed a few media servers to stream something to my PS3 over the weekend, but now when trying to shutdown the computer, I'm asked to authenticate with a password since other users are still logged in. I installed quite a few programs over the weekend trying to get it to work, so I can't remove a specific one. Is there a way to see which daemons are logged in under a different session? Found it. It turned out to be mythtv.

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Mar 16, 2010

Im using linux (Suse 11.1) on my laptop in my new job, however I need to set up my accounts and any account to authenticate using the existing windows ADC server.

What do i need to do precisely. I have kerberos & Samba installed. Do i need both of them or can I just go ahead and set up one.

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Sep 22, 2010

I've got a Samba server (CentOS)(I swear all my non-work boxes are Ubuntu) that has been working fine in our Active Directory environment for a long time, now that Windows 7 has been forced upon us, we've noticed that Win 7 users aren't able to authenticate to this server unless they access it using the IP address, e.g. \192.168.1.22. We've tried the different Windows 7 registry hacks and nothing makes a difference. We were advised to update Samba and we did to 3.3.8. However, this being a virtual machine, upgrading a clone of this machine did work, the configuration was identical, except the hostname

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General :: Authenticate Users Logins By A Database?

Apr 8, 2010

is it possible to authenticate users logins by a database (postgres, mysql)?for instance: -user types username, pasword, at login screen -OS then connects to server with database and checks if the user is valid. if so, is it feasible to add a time lock function for each user? in the sql, postgres table ? for instance user sandra can only log onto the computer for 1hr at 5pm

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Nov 22, 2010

is there any solution for authentication of ethernet users.something similar to daloradius for wifi.I dont want to use pppoe. is there any way to connect daloradius with dhcp server, so when certain mac address asks for IP first daloradius will look if it is allowed.

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Jul 7, 2010

I don't know what happened but sendmail suddenly stopped authenticate my users who tries to send mail.
I use slackware 13.0 and sendmail for SMTP with ssl and plain authentication. Imapd works fine.
There is nothing in logs just that the client did not issue MAIL/EXPN/VRFY/ETRN during connection.

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SUSE / Novell :: Authenticate Users Against EDirectory

Aug 9, 2010

We are testing the possibility to migrate from winXP to SLED 11 SP1. We have solved integration login and single sign on. But now we have the problem that we are not able to authenticate users against eDirectory. The test enviroment is SLED 11 SP1 workstation with authentication method eDirectory LDAP, default software + Novell client from installation disk + yast2-lum + yast2-linux-user-management

[Code]...

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Server :: Authenticate Users To Apache By Host/ISP And Password?

Aug 13, 2010

I am wondering how websites like banks are able to determine if you have previously used a certain computer to access the website, even if your router's IP address may have changed and your system's cookies have been cleared. I have users that need to access our HTTP intranet from outside locations. Those locations will have dynamic IP addresses most of the time, so I can't just "allow from [ip]" in my Apache proxy configuration. Originally we considered a VPN, but determined that a VPN will be overkill to access just an internal website, since we do not want external users to have permission to the rest of the network, only the website.I currently have it working over HTTPS with basic authentication against an internal LDAP server, but I want a little more security for such an important website.

crappy diagram:
[user]-->(internet via https)-->[apache gateway]-->(intranet)-->[http server]

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Apr 30, 2011

Friends is there some way to authenticate Microsoft windows users from openldap running on CentOS. I will be very thankful if you provide me step by step procedure.

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Ubuntu Servers :: Samba Share Using Domain User/group In Valid Users?

May 20, 2010

I have Ubuntu server 10.04 joined to a domain using Likewise Open. I can login using my domain credentials and have added my domain account to the sudoers file. Now that I've got it joined to the domain I want to add some samba shares and have domain members use their accounts to access them. However, no matter what combination of my domain name and the domain user or group I use in the valid users field it won't let me in. What's the proper way of inputting a domain user or group in the valid user field?

This is the entry I'm using for the share:

Code:
[testshare]
path = /srv/testshare
valid users = @"Domain Name+Domain Group" (Have tried many things here)
public = no
writable = yes
printable = no
create mask = 0765

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Feb 8, 2011

My server gets ddos attacks. I dig into access logs and I saw that attacker ips doesn't have valid requests headers, like their browser application info or requested url info.I want to close those connections immediately, and if it's possible block those ips for a time period.Can I do that with Apache and iptables?I searched on the internet but couldn't find useful results. Probably couldn't search for the right words.

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Feb 5, 2010

I have running on RHL enterprise 4. I want to configure squid users to authenticate against windows 2003 active directory. How do I go about from scratch

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CentOS 5 Server :: Samba 3.0.33-3.29.el5_5 + Winbind: Cannot Use UNIX Groups As Valid Users For Shares

Sep 11, 2010

I have setup a Centos5.5 VMWare guest with Samba and Winbind for Active Directory integration, using GUI tools. Authentication works flawlessly, with automatic home directory creation. What I want to achieve now is using local UNIX groups to controll access to shared folders, to avoid bothering AD administrators with groups management. This is my smb.conf global section:

workgroup = COGITANS
password server = domainserver.hq.cogitans.it
realm = HQ.COGITANS.IT
security = ads

[code]....

'finance' is a local UNIX group where I added user 'COGITANSalberto' (I also tried with 'alberto') as a secondary group (primary group is 'domain users' and it cannot be changed). I am sure the user is added, because it is listed in 'getent group'. If I specify user COGITANSalberto in valid users it works, i.e. only that use can access the share, the others get a NT_STATUS_ACCESS_DENIED error. But if I use +finance, access is denied to everybody, and this is the log:

[2010/09/11 14:12:37, 10] smbd/share_access.c:user_ok_token(211)
User COGITANSalberto not in 'valid users'
[2010/09/11 14:12:37, 2] smbd/service.c:make_connection_snum(617)
user 'COGITANSalberto' (from session setup) not permitted to access this share (finance)

[code]....

It seems like winbind cannot recognize finance as a local group. For the same reason, I guess, 'force group = finance' does not work either (files are created with 'domain users' group ownership). My /etc/nsswitch.conf:

passwd: files winbind
shadow: files winbind
group: files winbind

Grants and ownership on the '/repositories/shared/finance' folder are

root:domain users with permissions 775

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CentOS 5 Server :: LDAP Client - Nss_ldap: - Authenticate SSH And Sudo And Not Services Like Httpd - Nrpe - Xinetd

Aug 9, 2011

When ever I have an issue with our LDAP server (which I was able to fix) we see the following errors in /var/log/messages and it causes problems with our services running on that box, e.g. httpd, nrpe, xinetd, etc. Aug 8 17:44:42 hostname httpd: nss_ldap: failed to bind to LDAP server ldap://serveraddress/: Can't contact LDAP server Aug 8 17:44:42 hostname httpd: nss_ldap: reconnecting to LDAP server (sleeping 64 seconds)... I am only wanting to authenticate SSH and Sudo and not services like httpd, nrpe, xinetd etc.

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Ubuntu Servers :: Active Directory Domain Integration - Allow Domain Users To Authenticate Server And Access File Shares Using Samba

May 13, 2010

The company I work for, as usual, is Microsoft-centric. I'm attempting to integrate my Ubuntu server into the domain to allow domain users to authenticate to the server and access file shares using Samba. Here's my current configuration:

[Code].....

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Jun 4, 2009

So far, I've been able to get my Box (Centos 5.3) authenticate users through LDAP. My next plan was to automount their home directory from our NAS device.But I'm struggling getting autofs talking to the LDAP Server.My Config Files:

/etc/ldap.conf
[root@tmplt_CentOS-5 ~]# egrep -v '^#|^$?' /etc/ldap.conf
base ou=intern,o=zde,dc=simiangroup,dc=com

[code]....

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Ubuntu Networking :: Allow Client Users To Access The Network?

Dec 30, 2010

The question is related to one single desktop machine, with 3 users.

1) the superuser (me)
2) My elder son
3) My younger son.

As superuser, I can access the network (internet router) via "Wicd" perfectly well.

Both Client users can't.

Do I have to give them special user priviledges? If yes, which ones?

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Networking :: Cannot Add Nis Users To Groups On Client Machine

Jan 13, 2010

I've just set up NIS on my home network (probably not necessary on this scale, but I wanted to try it out). The server and the clients are all running Debian Lenny. I've got it up and running and have my NIS users on the server logging into graphical desktops on a client machine.My problem is this: The users cannot access a lot of services that are native to the client because they're not members of the right groups (for example, they have no sound because they're not members of the audio group). I figured it would be easy; just add users to groups with the usermod command but the response I get is that the user in question is not present in /etc/passwd. If I understand NIS correctly I'm not supposed to add my users to /etc/passwd on the client machines.

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Ubuntu :: Give Two Client Users Permission To Access Their File System?

May 1, 2011

The desktop computer of my two children has a total of three users:

1) The superuser (me)
2) The user 1001 (my elder son)
3) The user 1002 (my younger son)

Both users 1001 and 1002 can not access their files system, and also they can not save any attachments from incoming mails.

What I tried so far:
I accessed the file manager as superuser, and went: >Root>Home. Here I right-clicked on the folder User 1001, selected properties, selected the tab 'permissions' and allowed this user to read and write into this folder. I also checked the checkbox �extend this permission to all subfolders and its contents.

The problem is, when I reboot, everything is 'forgotten' and I am at quadrant zero again.

Eventually I should state that part of the folders are from a backup drive, because the hard disk had to be replaced so, once I re-installed the OS on the new hard drive, I copied the folders from the backup drive into the home folder.

One last question:
Is there a good tutorial about permissions?

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Feb 27, 2010

I am using Unbunto desktop and installed "likewise open" so that my linux client can access windows active directory(join the domain). On server side i have windows 2003 server. On windows 2003 server in active directory i have assigned each user a disk space. I have sucessfully joined linux (ubunto) box to the active directory domain but my linux box has access ($ it can use) to all other user diskpace ( they can browse other users) and when i joined windows xp client with the same server it works properly( xp client cant access or use other diskpace)

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May 24, 2011

We are setting up virtual Ubuntu 10 machines that will just be used to launch a portal to our servers. I have the stripped down image created, but would like it to launch the VMware View Open Client software so it took users directly to what we want them to see.Is there a way with Ubuntu to set that to auto deploy on start up? If I could do that it would greatly improve security on keeping users from getting to places we don't want them into

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Jul 1, 2010

I have set up an NFS server on Fedora 13, and I am connecting to it with Fedora 13 and Ubuntu 10.

On both clients the command

Code:

works fine. On Fedora I can get into the directory with Nautilus and have read/write permissions as specified in /etc/exports on the server, but on Ubuntu I can only get into it from a sudo'd command line.

The ownership of the file on Fedora is "nobody" and on Ubuntu it's "user #500", with only people in the "500" group having access to it.

Obviously the permissions can't be changed on the client, but with the Fedora box being able to read/write to it with no problems I'm not sure what else I can do on the server to let normal users on the Ubuntu box read it.

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Feb 8, 2010

I am encountering this issue:

Samba login/passwd client : why the users id arent the same on every machines?

So the client side config looks like this:

Quote:

/etc/pam.d/ files :

Code:

returns:

Code:

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Sep 27, 2010

i have a windows domain and linux ftp server. OSs windows 2003 server and centos 5.5. i would like to integrate this file server to windows domain. And would authenticate users from windows domain.

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Oct 11, 2010

I installed SLES 10.2 with SAMBA 3.5.5.43 to retire our old Microsoft Windows 2000 Server and save some money. All was fine until last week when our chief asked to me to set password expiration for all clients. This morning, all users cannot logon because, when they logon, windows asks to change password and then it gives error error "Access Denied".

[code]...

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Jan 27, 2011

perhaps anyone can help me. Situation: A VPS Server, i installed a PPTP Server on it, is working. Client connecting to PPTP Server, working. Now i only wanna one port thru the PPTP Connection, all other NOT. In example Port 52000 on Client. Users connecting to Serverip:52000 and should land on Client:52000, BUT and that is what is important for me, with their Real IP. If i do a POSTROUTING ppp0 MASQUERADE it is working, but the Users in my Log have the IP from the Server and not their Realip. It makes sense because i do Masquerading.

Anyone can Help me? That would be great! VPN IPs are 192.168.0.1 on Server and 192.168.0.234 on Client. I can ping each other. Server Interfaces: eth0 and if i connected with PPTP Client ppp0 (192.168.0.1). I wanna not route all traffic through PPTP, only one or two Ports!

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May 26, 2011

I have configured server ubuntu 11.04. Everything works fine, but there is a need for some clients to connect local hard drive. What should I do? How and what modules are added to the ltsp-image? How to register in the fstab on the client? Maybe I'm going the wrong way?

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Ubuntu Servers :: Add Windows & Mac Users As Samba Users?

Nov 23, 2010

If I want to add Windows & Mac users as Samba users, must I first add them all as Ubuntu users? If so, since none of the other users will actually be working on the Ubuntu Server, how do I disable the other non-admin users on the Ubuntu Server login screen. I am using Webmin to administer some server settings, and command line for others.

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i have a Domain Cotroller installed on Windows & DHCP Server installed on Ubuntu. i want to give access only authenticated Users(Active Directory Users) can get IP from DHCP. No one else canis there any option available here in DHCP ???

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