CentOS 5 Server :: How Do I Turn Winbind Authentication Off Or Vsftpd
May 25, 2011
How do I turn winbind authentication off or vsftpd. I keep getting these error messages in the /var/log/ secure:vsftpd: pam_winbind(vsftpd:auth): request failed: No such user, PAM error was User not known to the underlying authentication module (10), NT error was NT_STATUS_NO_SUCH_USER.I already tried remarking out different things in the config files. Is it safe to remark out the winbind stuff in /etc/pam.d/system-auth if we are using the smbclient to connect to a Windows share?Why would you want to to use AD to authenticate users for something simple like FTP is beyond me.I merely want it to authenticate against local system users.
I already have this setup working in a debian server but I would like to setup the same in CentOS 5.3. I just copied all the configuration files to the CentOS server but I'm getting the following errors in messages:
vsftpd: nss_ldap: reconnecting to LDAP server (sleeping 64 seconds)... vsftpd: nss_ldap: reconnecting to LDAP server (sleeping 64 seconds)... crond[24483]: nss_ldap: reconnecting to LDAP server (sleeping 4 seconds)... crond[24483]: nss_ldap: reconnecting to LDAP server (sleeping 8 seconds)... crond[24483]: nss_ldap: reconnecting to LDAP server (sleeping 16 seconds)... crond[24483]: nss_ldap: reconnecting to LDAP server (sleeping 32 seconds)...
I've been searching around the web for help and have been really pulling my hair on this one. I have a Windows 2003 Server w/ AD on it. I have two linux machine, both running the same version of RHEL 5 (compute-1, compute-4)
When I log into compute-1, and do an "id dhuynh", I get this: uid=1501(dhuynh) gid=1500(domain users) groups=1500(domain users),2013(dusers),1501(certsvc_dcom_access),1507 (BUILTIN+users) When I log into compute-4, do do the same command, I get this: uid=1500(dhuynh) gid=1504(domain users) groups=1504(domain users),1505(certsvc_dcom_access),1501(BUILTIN+user s)
Notice that the uid and gid are different. How do I get them to be the same? This is affective the file permissions in certain shared directories. I've check /etc/samba/smb.conf and they are identical. I also check /etc/nsswitch.conf and they are identical too.
Recently i configured Postfix with Cyrus-Imap and it all worked fine unless i wanted to allow also AD users to use Squirrelmail.Currently AD users are able to logon to ssh server without any problems.
- wbinfo -u & -g is fine
- testsaslauth - passed
- telnet to localhost 143 + a LOGIN user password - passed
- cyradm shows active mailbox for particular user
imap i pam.d:
#%PAM-1.0 auth include system-auth account include system-auth
I am trying to build a ftp server with vsftpd. In general, I am not able to log in. I can only log in to the ftp server, if that same user is logged in to the server. I found out that this has to with my network setup. I am using OpenLDAP for centralized authentication and home directories are stored on an NFS server. The problem is that regular users are not allowed to log in to servers, therefore their home directories are not mounted. However I want to be able to give my users access to the ftp server without their home directories mounted. Is this possible with vsftpd and if so how do get this up and running. By the way, anonymous users are not allowed.
Centos 5.4 64bit fully updated. What I am doing is vsftpd is setup and nfs shares are mounted to a NAS server which is running openfiler 2.3 fully updated. openfiler is winbind to AD and pulling users and groups over.
I have it confirmed working when a ftp users connects the username/password is authenticated against AD which works. User can login and is directed to the users folder on the nfs share.
Openfiler shows me UID and GID numbers for users and groups, centos also shows me UID and GID but they are different which is causing permissions/quota's to not work right.
Both servers are setup with krb and winbind, openfiler has a more recent version of winbind.
Here is an example...
AD Users are
user UID of 160010 as an example user1 UID 160011
When user logs into the vsftp server it works and chrooted into the directory for that user. When user uploads files I can upload but the UID in the ftp client shows 1600011 which is user1 UID
logging into windows to that share shows in the security tab that user1 uploaded the files.
Centos is mapping user as 160011 openfiler is mapping user as 160010 windows is showing the user1 in the security tab.
So it appears that centos is not mapping the right numbers to the right users and groups.
If you need details please ask for it and I will provide.
Both configs are nearly a match and I have made small changes to the config files smb.conf but it failed resolve these issues to work so I reverted back. kinit works with authentication, getent works, wbinfo -a and -u works. wbinfo -u user shows different results on both servers, but authentication works user/password and I tried a different password to test.
Is this a known bug or a silly misconfiguration? I had authentication GUI tool configure the winbind stuff so its all fairly standard on the centos machine and the openfiler gui configure winbind configs.
Seismicmike here. My first post. I'll try to be as clear and concise as possible. For the sake of this post, I'm going to use 1.2.3.4 as a place holder for my public IP. On my web server, I would like to be able to access the /var/ftp directory through a web browser. I have successfully done so with Google Chrome, but I cannot access the directory in Firefox or IE. Both FF and IE ask me for authentication but then time out attempting to load the directory.
I suspect that there may be something up with switching to passive mode and/or that this issue may be more with my configuration of Firefox and not with the server (seeing as how Chrome works). Another possibility may be related to SSL. When I connect with FileZilla, I have to use the FTP over Explicit SSL/TLS option in order to connect. In any case I still would like to fix it. I would also like to avoid having to install FireFTP if at all possible.
Steps to reproduce (not that you can without my actual IP =J):
* Open Chrome * Go to ftp://1.2.3.4 * Enter username * Enter password
I added my linux server to a windows AD using winbind / samba. Everything worked just fine. After changing the OS to Debian lenny x64 I get a "segmentation fault" when trying to change user passwords. I am using the exact same configuration, on my 32 bit Server everything works.
debian:~# passwd <user> sgmentation fault tail /var/log/syslog: kernel: [689689.005934] passwd[11209]: segfault at 0 ip b7b84418 sp bfc37fc0 error 4 in pam_winbind.so[b7b7e000+b000] Debian Lenny 5.0
following situation and configuring authentication for Windows users on my CentOS clients please:IHAC WIN2003 R2 Domaincontroller with ALL my users and groups maintained there. For Usermapping (SID to UID/GID) I want to use IMU which is included with WIN2003 R2 srv and extends my Active Directory schema for UID, GID, NIS Domain etc. I want now authenticate my Windows users on my CentOS clients via their "domainnameusername" and passwords on the CentOS clients.
I also have a NAS server which has usermapping integrated and resolves the Windows SID's to the UID/GID's configured within the IMU schema extensions. Now I have no idea to setup my CentOS clients to use winbind, PAM and LDAP (IMU supports LDAP queries for UID/GID resolving) WITHOUT needing any Samaba Server or functionality.
* Do I need to configure the smb.conf file because my usermapping is done on the NAS Server and I want to resolve my Windows Users/Groups UID/GID's from IMU via LDAP?
* Do I (just) need to Join the AD (2003 native) or even using Kerberos with generating ktpass.exe keytab files (what is needed/recommended and what is the difference?) Can I authenticate the users without using Kerberos?
For e.g. my username is "domainuser_a" and within the IMU the UID is set to "12345", I don't want Samba/winbind to do usermapping again based on the configured values in the smb.conf file. Some hints would be really nice for me to understand how exactly it works and what is needed...
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:
'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:
I installed vsftpd server in one of my servers using "yum install vsftpd" command. NFS server is running in the other server and mounted as "/data" in this FTP server. root in FTP server has also root authority in NFS server. All the files and sub-folders under "/data" in FTP server have 755 or 766 mode. Even I modified vsftpd setting to allow root login.
When I login as root to FTP server with FileZilla client, I can see all the file list in root home directory and move to /data directory. I can download any file in a local HDD but I can not download any file in /data directory.
I open "man vsftpd.conf", it says syslog_enable If enabled, then any log output which would have gone o /var/log/vsftpd.log goes to the system log instead. Logging is done under the FTPD facility. Default: NO So I add "syslog_enable=YES" to the /etc/vsftpd.conf, and add "ftpd.* /var/log/ftplog" into /etc/syslog.conf. But there is no log infomation in the ftplog file.
I'm still learning my way around CentOS and linux in general... Using CentOS 5.4
BUT, I used the scripts from HowTo/Chroot Vsftpd and it did not work with the non-TLS script config, but the with TSL worked great. I wasn't sure where to put the vsftpd_virtualuser_config.tpl file but I copied it over when the script failed to find it... to where it was looking.
So I think it's working but my question is, TLS doesn't use port 21 but the script defaults to that port. I'm using FileZilla from an XP machine at work and I'm forwarding all the ports given in the HowTo. So I'm forcing the client to use TLS on port 21 but it hangs on the connection. If I use non TLS I get in but it tells me it requires TSL. I've had no luck with vsftpd in the past and this is my next attempt.
I've only recently encountered this problem with vsftpd when I was creating new ftp accounts. I keep on getting:
550 Access Denied.
on every action I try to do on ftp, no matter what. I've been trying to solve this myself however my attempts have been futile.
The permissions, and ownership have been checked and rechecked tens of times now, so thats not the issue. I've reinstalled the OS of my server twice now, and the problem is still persisting. Heres my config file, this isnt for anon by the way.
Code: # Example config file /etc/vsftpd/vsftpd.conf # # The default compiled in settings are fairly paranoid. This sample file # loosens things up a bit, to make the ftp daemon more usable. # Please see vsftpd.conf.5 for all compiled in defaults. #
I set up my vsftpd server, but when using "sftp servername" it's not using vsftpd but another (what seems like) built-in sftp server. Even when I stop the vsftpd service I am still able to get a prompt to log in. I haven't installed any other ftp servers.
I'm able to connect to ftp as a virtual user. It was also difficult as nowhere mentioned, that it should be done with SSL. Anyway I found the answer and got connection. But now I can't connect to ftp server as system user. It gives me "530 Permission denied", or if I delete the user from the file denied_users, - "530 Login incorrect".
1. Still I can't understand, how I can log in to FTP server with a system user.Also some other questions regarding this matter:
2. My httpd server Apache has a virtual hosts located in "/home" directory.The scripts create users in "/var/ftp virtual_users". Will it cause any problem if I will change them to "/home"? All I need to do with this is ability to have several virtual hosts in one server with separate access to each of them via FTP. And 1 account with access to all files in "/home".
3. In my ftp client I can see the owner of virtual host "ftp" instead of username.
I'm having difficulties with uploading files to a CentOS-server with vsftpd. I have the exact same configuration on a Fedora10 and there I have no problems...
Trying to set up VSFTPD on the CentOS 5 box at work, which is an internal web development server. I'm leaving soon, and all knowledge of or desire to learn SSH is going with me so the other employees will need to be able to access the web root using FTP clients.
Essentially there is no need for special user accounts or privileges, it's an internal server in a tiny company. I've got the LocalRoot set to /var/www/ which I can log in to and read all files via FTP, however despite setting everything to 777 in /var/www/ and below, I still can't get any write privileges on the FTP server.
I am attempting to connect to VSFTPD via Filezilla from a windows machine, but regardless of which user name I use I get a "530 Login incorrect" error. I have tried turning off the firewalls on both the CentOS and Windows side of things with no result. I disabled the SSL/TLS commands in the config file, also with no change. I tried a couple of different FTP clients, but got similar results regardless of which client I used. I have been going over man pages and documentation for a couple of days now, but cannot come up with an answer. I suspect it lies in my configuration, but I got the same results when I reverted my config file back to the original. what else I can do? One other note is that I am attempting to connect via a LAN, at this point I don't care if it works across the WAN as I only intend to use it to upload files to my web server.
I am running FTP server using vsftpd 2.0.5-12 on Centos 5.3 64bit with default settings, annonymous access enabled. Each night new files are created and moved into a FTP subdirectory (/var/ftp/spectra) by a script. The files are owned by a local user/group, not root, and the same holds for the /var/ftp/spectra subdirectory. The new files are not visible via FTP. Only visible are files that were created the same day when I made the directory /var/ftp/spectra. Also files that are created "in place", e.g. by vi, are visible until I change their owner/group. This is the situation when vsftpd is runned as a system service (/etc/init.d/vsftpd start).
When I start the vsftpd directly using the command /usr/sbin/vsftpd (both without or with the configuration file specified), all files are visible and normally accessible via FTP.
I have never had the packaged vsftpd start with the ssl_enable option set to YES. The mysql on those servers works just fine with SSL enabled. After reading there seems to be a different package available on rh5 repo. This server shows up to date with 2.0.5-12.el5_3.1. The rh5 list shows 2.0.5-16_el5 per this:[URL].. My question is, is there a set lead time till adoption of current RH packages or is just random? I have to have SSL_ftp running and didn't want to step out of the repo lists if possible.
Using THIS I was able to get virtual users working via standard ftp. After wrestling with selinux and such I'm able to log in as a user defined in the virtual-users file.
At the bottom is the vsftpd.conf. I can start the server no problem. I've been making edits to it so I'm not sure what's right/wrong at this point in it. I have a snapshot I keep reverting to where ftp works with virtual users and then I start monkeying with it again.
First problem I have is I'm not exactly sure how to test it. If I use WinSCP, I try SFTP and in the vsftpd.log I see:
I want to install a FTP server (VSFTPD) on my Redhat Enterprise Linux 5.5 and i want to use Active Directory LDAP (windows server 2008 enterprise) for authentication. I can't add my windows LDAP to FTP server. I try my best but i cant to config it.
I am trying to wade through the semanage jungle to get permissions for a tftp client. I followed the HowTos [URL] but I get the following at the client:
tftp> status Connected to 192.168.1.101. Mode: netascii Verbose: off Tracing: off Rexmt-interval: 5 seconds, Max-timeout: 25 seconds tftp> get hello.o4 tftp: hello.o4: Permission denied
I finally figured out that the firewall directives shown at the end of the HowTo refer to semanage although the options are stated incorrectly according to the man page for semanage. I did insure that the file hello.o4 in /tftpboot has read permission for everybody.
I am attempting to configure vsftpd to allow anonymous users to PUT files into a shared incoming directory. This would be like a dropbox for my customers. Ideally, the incoming directory's contents would not be viewable by the users.
I believe that refused connection is due to the PAM configuration for vsftpd.
May 4 08:03:16 WSVM-S1-1 sshd[1512]: Invalid user anonymous from xxx.xxx.xxx.xxx May 4 08:03:16 WSVM-S1-1 sshd[1513]: input_userauth_request: invalid user anonymous May 4 08:03:16 WSVM-S1-1 sshd[1512]: pam_unix(sshd:auth): check pass; user unknown
I have a centos server installation running, and have installed and configured vsftpd. FileZilla works great. I am able to connect and transfer files both ways. I used this just for testing purposes.
What I need to do is get Fling File Transfer working. I can connect to vsftpd with Fling, but that is as far as it goes.Sep 20 11:18:44 ftp vsftpd[28286]: warning: can't get client address: Socket operation on non-socketSep 20 11:31:03 ftp avahi-daemon[2240]:
