Autofs is configured for home dirs and also to mount a static share /etc/auto.master. People log in graphically locally and remotely via ssh. DNF on Fedora. Depending on the version of CIFS your NAS is running your may want to extend your mount command with something like vers=1 (or 2 or 3), to force a certain version of the CIFS protocol to be used. Or create an unprivileged domain user to mount the shares and add that. man mount.cifs) What I'd like to do is to set this in /etc/fstab. Online documentation is I was able to find online such as this Samba.Org mount.cifs document doesn't really help much either. kdestroy -c /tmp/krb5cc_0_join If you have not already done so, create a keytab file for your service account (service-NetID -- see related article) and store in a local filesystem and readable only by root, e.g. I am trying to get a good wireshark trace to see the raw reply from the filer. The situation is as follows. Zentyal Server. Use app-crypt/mit-krb5 instead of app-crypt/heimdal. cifs-utils through 6.14, with verbose logging, can cause an information leak when a file contains = (equal sign) characters but is not a valid credentials file. Hello AIX gurus, I am trying to mount a CIFS share on AIX and I could use some help. Each host should have a copy of its own key inside /etc/krb5.keytab. I also specify the uid range 0-5000 to exclude root and local account logins from attempting to mount a udrive. First, you have to get a krb5 ticket. SSSD/adcli joins will always have one at /etc/krb5.keytab, but joining using Samba might not generate one by default. Need to mount a CIFS share, and due to security restrictions, we can't leave cleartext passwords in our servers. Save & quit Mount it with; sudo mount -a. You'll now have access, it should also be persistent on reboot. kernel: CIFS: Attempting to mount \\server01\share01 cifs.upcall[78171]: key description: cifs.spnego;0;0;39010000;ver=0x2;host=server01;ip4=172.22.3.14;sec=krb5;uid=0x3e8;creduid=0x3e8;user=lynix;pid=0x13158 cifs.upcall[78171]: ver=2 cifs . Step 1. verify you can get a Kerberos ticket kinit testuser1@CORP.COMPANY.NET Password for testuser1@CORP.COMPANY.NET: We need to mount CIFS shares on Isilon on linux clients using kerberos. I want it so my Opensuse 11 computer will automatically mount AD shares using krb5 authentication when a user logs in. This option allows the upcall program to reverse resolve the network address of the server in order to get the hostname. 1 Kerberos. I was, at least for a while, able to mount using GVFS by adding my user with read permissions to the MyDepartment directory. But can't find this option. CIFS is not compatible with FIPS. It is possible to . Since I am mounting as root and "root" isn't an AD user and doesn't have a kerberos ticket I need to kinit as the AD service account first. However when FIPS mode is enabled the use of md4 and md5 are disabled which prevents users from using NTLM, NTLMv2 or NTLMSSP authentication. CIFS: VFS: Verify user has a krb5 ticket and keyutils is installed CIFS: VFS: \\myserver Send error in SessSetup = -126 CIFS: VFS: cifs_mount failed w/return code = -2 Researching the web I spend hours trying to set the version, gid, uid, cruid in the mount command but nothing works. The cruid parameter tells cifs.upcall on behalf of which account this mount is occurring. Options to mount.cifs are specified as a comma-separated list of key=value pairs. After obtaining the ticket, you can make the mount. The only line(s) in /etc/auto.cifs should be your specific mount points. I'm currently seeing the following when trying to mount a CIFS share (using a krb5 ticket): systemd[1]: Mounting CIFS share 'share01' on 'server01'. With this update, the missing entries have been added to the manual page. cifs.upcall is generally intended to be run when the kernel calls request-key (8) for a . To start on boot, you need to set After=network.target in the Unit section and WantedBy=multi-user.target in the Install section. Don't know why that stopped working. Governance rules An investment fund is a separate pool of assets created from . Using smbmount in Etch works fine (as I understand, that worked in a different way?) map file. Improve this answer. Options to mount.cifs are specified as a comma-separated list of key=value pairs. . To mount and unmount NFS network file systems, you need to set up a NFS server.. michael@debdev:~# apt-get install krb5-user krb5-config cifs-utils keyutils After installing the packages the Kerberos configuration wizard starts. This share is the c:\users area on the windows server and its configured in /etc/auto.home. 2) For setting up Kerberos SSO using keytab file, please read the knowledge base article KB-9939 Hi. I'd like to specify domain-workgroup when create or modify cifs server. This program is a callout program that does these things for the kernel and then returns the result. kernel: CIFS: Attempting to mount \\server01\share01 cifs.upcall[78171]: key description: cifs.spnego;0;0;39010000;ver=0x2;host=server01;ip4=172.22.3.14;sec=krb5;uid=0x3e8;creduid=0x3e8;user=lynix;pid=0x13158 cifs.upcall[78171]: ver=2 cifs . Note that the mount.cifs helper must be at version 1.10 or higher to support specifying the uid (or gid) in non-numeric form. man mount.cifs) and kernel log messages (dmesg) Subscriber exclusive content. Capture the network traces between the filer and KDC during the cifs/nfs setup. How to setup CIFS mounts using the multiuser and kerberos options. to allow the users to actually run the mount.cifs and umount.cifs programs (probably not required for autumouting, but usefull for testing mounts manually). This limitation of mount.cifs wrt to Kerberos authentication and DFS referral break that assumption. /cifs/termserver/ for the first line.) Let's get started. Initial Source. The CA Identity Suite Virtual Appliance supports mounting of the network drives based on the standard Linux kernel support. The reason for the failure is that cifs.upcall specifies the principal as cifs/hostname from mount command which is not qualified thus Kerberos adds the default realm to qualify the unqualified principal . /adhome /etc/auto.home /cifs /etc/auto.cifs. -make sure you have the line in /etc/reqest-key.conf: Dec 22 17:31:55 USER-PC.example.local cifs.upcall[29166]: cifs_krb5_get_req: unable to get credentials for example.local Dec 22 17:31:55 USER-PC.example.local cifs.upcall[29166]: handle_krb5_mech: failed to obtain service ticket (-1765328377) Install the necessary "cifs-utils" with the package manager of your choice e.g. But there seems to be no way to use Kerberos to authenticate the mounting, and it's only Kerberos (and smbmount) that seems to work. All product names, logos, and brands are property of their respective owners. This is essentially the same mount.cifs command that I excecuted from the root command line as described above. sudo dnf install cifs-utils. (Due to the network not being ready upon startup, I do not want to utilize fstab.) 1. This update improves cifs.upcall so that the method used to #!/bin/bash echo "-fstype=cifs,sec=krb5,user=$1 ://our-file-server/our-home . The test directory will mount via CIFS manually, but not when called by PAM at the login. The issue is really here I think: Mar 18 09:48:34 fwuserpc4 cifs.upcall: handle_krb5_mech: getting service ticket for cifs/FS0Z0LLQ Mar 18 09:48:34 fwuserpc4 cifs.upcall: handle_krb5_mech: failed to obtain service ticket (-1765328160) Mar 18 09:48:34 fwuserpc4 cifs.upcall: handle_krb5_mech: getting service ticket for host/FS0Z0LLQ Mar 18 09:48:34 fwuserpc4 cifs . pam_mount is installed and configured, but it only mounts a cifs share, if I first enter the command kinit username on the host before logging in. Doug. 2. Share. I'm currently seeing the following when trying to mount a CIFS share (using a krb5 ticket): systemd[1]: Mounting CIFS share 'share01' on 'server01'. mount -t cifs //ipaserver.MY.LAN/Share -o sec=krb5,multiuser mountpoint (I also tried -o sec=krb5,multiuser,cache=none) Anyway, it works if I do the mount as root and then as user john gets the What I am trying to do is get it so it doesn't ask for the password and just uses the credentials that I use for logging into the server. * The cifs.mount(8) manual page was previously missing documentation for several mount options. 1. The above factors have resulted in a growing interest in Polish CIFs. The mount.cifs utility attaches the UNC name (exported network resource) specified as service (using //server/share syntax, where "server" is the server name or IP address and "share" is the name of the share) to the local directory mount-point . Install cifs-utils Package. It may be specified as either a groupname or a numeric gid. This example demonstrate the procedure on how to mount a share on a Debian 7 (Wheezy) Linux. Stack Exchange network consists of 180 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchange You can perform these steps using the kinit command, followed by the mount command: kinit testuser@EXAMPLE.COM mount -t cifs -o sec=krb5 //server.example.com/export /mnt/cifs In these, first kinit is used to get the Kerberos tickets. gid=arg. Environment Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 sssd Please Note: Kerberos support for CIFS mounts is considered Tech Preview in Red Hat Enterprise Linux 5. Raw. Secd.gz shows the following error: cifs.upcall will look for the. You need multiuser. That would work around this limitation of . sudo vim /etc/fstab. sudo mount -t cifs -o user=$USER,cruid=$USER,sec=krb5,gid=$GID,uid=$UID //domain/path /home/path You get your $GID by running id -g $USER and your $UID by id -u $USER. unable to get principal Jun 3 14:08:07 clientName cifs.upcall: krb5_get_init_creds_keytab: -1765328203 Jun 3 14:08:07 clientName cifs.upcall: Exit status 1 Jun 3 14:08:07 clientName kernel: . And using the "-o sec=krb5" options on mount doesn't seem to work, either. Tour Start here for a quick overview of the site ; Help Center Detailed answers to any questions you might have ; Meta Discuss the workings and policies of this site The second column is the options. If no working DNS, add an entry in the /etc/hosts file with the nfsserver name and its IP address. The samba is typically used to share files with Windows computers, But using the SMB/CIFS protocol we can also mount samba shares on Linux. 2- the /windows_cdrom is created as mount point with 777 mode and root:sys owner. mount.cifs fails to access MS Windows share when smbclient goes on fine, using the same credentials ( with samba service running ). I successfully installed and configured krb5 on a Red Hat 6.4 server, now I can authenticate against an active directory with kerberos. fsqe-2nc1::vserver*> version. key to the keytab. You don't need to cron your tgt requests. Incidentally, if I had a mechanism to resolve DFS referral reliably, I could use that to prepare the target service UNC to pass to mount.cifs. sets the gid that will own all files on the mounted filesystem. Commercial Edition; Development Edition; Code; Tracker; I need help . I keep getting this error: " # mount -t cifs. Raw. create cifs.spnego * * /usr/bin/cifs.upcall %k Finally, check the system log (/var/log/debug or journalctl -b) for messages from cifs.upcall, and make sure it is looking for your tickets in the correct place. This should be in the form of nfs/hostname@REALM. Create an nfs Kerberos principal for your client and server machines. (Use klist -k to check the keytab's contents.) From patchwork Tue Apr 13 14:26:11 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 92199 Received: from lists.samba.org (fn.samba.org [216.83.154.106]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o3DEQJWb012514 for ; Tue, 13 Apr 2010 14:26:55 GMT Received: from fn.samba.org (localhost . Install and Configure Samba Server on CentOS 7. Workstation is part of a domain. The following is sent to syslog: > cifs.upcall: handle_krb5_mech: getting service ticket for cifs/server.example.com > cifs.upcall: cifs . To get mount.cifs working, I had to explicitly add my user to Homes, Departments, and MyDepartment with read & traverse permissions. 1.1 General krb configs. /sbin/mount.cifs. NFS network file system. caused krb5 authentication to fail when mounting a server's unqualified domain name. Also you may want to play around with the password hashing protocol. Just add a Requires and an After with the mount service in the depending service (s). mount error(95): Operation not supported Refer to the mount.cifs(8) manual page (e.g. It should now be possible is to mount the Windows shares using the kerberos ticket already obtained during login. JSON Vulners Source. . Prosimy uprzedzi przed egzaminem o niedostpnoci swoich wsppracownikw. Czas trwania szkolenia: Egzamin trwa 2,5 godziny podczas, ktrych nie mona korzysta z telefonw komrkowych. For example, mount -t cifs //my_server/e$ /mnt -o user=myname,pass=mypassword Before -o the option -v may be specified to make the mount.cifs mount helper display the mount steps The mount.cifs utility attaches the UNC name (exported network resource) specified as service (using //server/share syntax, where "server" is the server name or IP address and "share" is the name of the share) to the local directory mount-point. Linux Small Business Server. 3- /etc/hosts contain the windows box IP address and can ping to the windows and vice versa. For other considerations see the description of uid above. This makes it a problem to mount the drive automatically on reboot (/etc/fstab). I guess, at the very least, it has to be documented somehow. Error: User authentication procedure failed CIFS SMB2 Share mapping - Client Ip = x.x.x.x ** [ 13] FAILURE: CIFS authentication failed. Mount the directory mount -t cifs -o sec=krb5 //<winserverFQDN>/<shareDrive> /<mountPoint> Note: 1) It is important that the CIFS server in Active Directory, have a 'cifs/<serverFQDN>' serviceprincipalname (SPN) in the server attributes. . Here are the environment details: AIX - 6100-05-01-1016. The -t Option does the following: With krb5 upcalls, the name used as the host portion of the service principal defaults to the hostname portion of the UNC. In addition, the users credentials will be stored securely in a keytab file. Subject: cifs-utils: cifs.upcall, krb5.conf have different credential cache defaults, cifs.mount with sec=krb5 broken Date: Tue, 30 Mar 2021 13:43:58 -0500 Package: cifs-utils Severity: normal Hello, I am unable to setup the appropriate environment to confirm that this bug can be reproduced on Debian. KRB5_GET_IN_TKT_LOOP -1765328162L. Active Directory, Windows Server 2008. -kill k5start. Ticket not yet valid . Connecting via smbclient works fine. For each host, locally run kadmin -p adminuser/admin (adminuser/admin is an admin principal) with the commands: addpriv -randkey nfs/hostnamename@REALM ktadd . Regenerate the key tab files for the client and filer and retry the Kerberos mount as per the procedure. It may be that you have to apt-get install keyutils to get this working. mount.cifs of SAMBA share Fail by using Kerberos . Originally by Igor Druzhinin in cifs-utils 4.7 and overhauled in 5.3. I was told it has to do with 'extended security negotiation' support' ? 3. key as and when it needs it: -Put hostname$ in /etc/krb5.keytab. cifs.upcall: cifs_krb5_get_req: unable to get credentials for myhost cifs.upcall: handle_krb5_mech: failed to obtain service ticket (-1765328377) Red Hat Enterprise Linux 6. man mount.cifs) . Create mountpoints. "sec=krb5" specifies kerberos auth mechanism and "cruid" points to the user whose cached krb5 ticket to use. The script is in the first section below. mount.cifs cannot. If neither exists you will need to install the appropriate "smbfs" package on your system that will include either or both of these files. Ordinarily you'd use a mount command like this: $ sudo mount -t cifs -o user=acoder,cruid=acoder,sec=krb5 . Thanks for the detailed writeup. Just working with static shares is fine, although allowing per-user dynamic shares is better. Mount CIFS on AIX. mount -t cifs //ipaserver.MY.LAN/Share -o sec=krb5,multiuser mountpoint (I also tried -o sec=krb5,multiuser,cache=none) Anyway, it works if I do the mount as root and then as user john gets the To mount samba share on CentOS 7, we need to install cifs-utils package on CentOS 7. Let's have a closer look at how they function. Looping detected inside krb5_get_in_tkt . Hi. All company, product and service names used in this website are for . Here's mine, which is two separate mounts. This limitation of mount.cifs wrt to Kerberos authentication and DFS referral break that assumption. After create cifs, can find this option in -fields. 1- smbOverTcp is set to "yes". Refer to the mount.cifs(8) manual page (e.g. Minor code may provide more information: Keytab MEMORY:cifs_srv_keytab is nonexistent or empty] The reproduced server is ibm-x3650m4-01-vm-06.lab.eng.bos.redhat.com. If you leave CIFS home directories mounted for a long time and the users' tickets expire, bad things seem to occur, so you'd better unmount them or reboot every once in a while. Windows Build Number Microsoft Windows [Version 10..19042.985] WSL Version WSL 2 WSL 1 Kernel Version 5.4.72 Distro Version Ubuntu 20.04 Other Software Docker Desktop 3.3.3 (64133) Docker version . A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more. If the mount is needed by one or more particular services, you might as well do the mount on demand. For example: NFS shares, SMB/CIFS shares. Create a directory (mountpoint) in /media for every network share you want to mount. Version-Release number of selected component (if applicable): samba-4.4.4-9.el7.x86_64 kernel-3.10.-506.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.smb.conf [global . The credfile have the following structure : Code: username=administrator . . I have a script that allows me to mount a windows share using cifs. The first column is the local mount point (i.e. //server.my.domain.name/directory /mount/point cifs noauto,users,_netdev,sec=krb5 Then I created a shell script with the file extension .sh in /etc/profile.d to mount the directory on login, but only for users who belong to the appropriate domain: if [ [ " $ (groups) " =~ ' domain users@my.domain.name ' ]]; then mount /mount/point >/dev/null fi This means that autofs will mount each smb/cifs server as /cifs/hostname and there under /cifs/hostname/sharename Step 2: Alter uid=$UID to uid=AUTOFS_UID in /etc/auto.smb (or /etc/auto.cifs) as showed above. Products; Solutions & Services; Support; . I am able to Copy. the steps to mount the DVD: I inserted the DVD in Windows box (ip: 192.168.1.152) and as root on hp-ux, I issued: Code: But mount.cifs does. create cifs.spnego * * /usr/bin/cifs.upcall %k Finally, check the system log (/var/log/debug or journalctl -b) for messages from cifs.upcall, and make sure it is looking for your tickets in the correct place. CIFS mount issue Post by ddolecki108 Tue Jun 20, 2017 1:26 pm ON a FIPS hardeded system the RHEL support method to mount a CIFS share is to use sec=krb5, tried that, still getting errors: Domain Controller - WIN2K8R2 (authentication takes place here) CIFS share is stored on a NetApp storage array that is joined to the domain. ads_krb5_mk_req: Ticket (cifs/smartconnectzone_name.mydomain.com@mydomain.com) in ccache (FILE:/tmp/krb5cc_0) is valid until: (Fri, 30 Oct 2015 21:15:30 EDT - 1446254130) That is, either the /sbin/mount.cifs or the /sbin/mount.smbfs commands must be present on your system. Other distributions should provide a simliar way. 2. Subscriber exclusive content To mount the share with your user as owner (and thus with write permission) add the gid and uid options. Either use a key you already have: mount -t cifs //yourserver/share /share -osec=krb5, username=MACHINE$,multiuser. The machines are rebooted periodically. Incidentally, if I had a mechanism to resolve DFS referral reliably, I could use that to prepare the target service UNC to pass to mount.cifs. Refer to the mount.cifs(8) manual page (e.g. If the mount helper, mount.cifs, is installed (which is usually the case for most Linux distributions), then a tcp host name rather than ip address may be used. You can add it to your mount command using sec= The last column is the UNC share path as you'd type it to get to the specific share. Install the NFS client package: # yum install -y nfs-utils Let's assume that the /home/tools directory is exported by the nfsserver server. -make sure you have username=hostname$ as a cifs option in the autofs. For . I guess, at the very least, it has to be documented somehow. Package: smbfs Version: 2:3.2.4-1 Severity: important (resubmitting due to personal "fail") Hello, I am unable to mount a share on my Windows XP machine using mount.cifs/smbmount. cifs.upcall is a userspace helper program for the linux CIFS client filesystem. Mounting a share on the DFS root server succeeds with sec=krb5 but not with sec=krb5i, while with the publishing AD server, it's just the other way around. I have been doing a lot of looking around online and have really not been able to find a clear solution to my problem. KRB5KRB_AP_ERR_TKT_NYV -1765328351L. For Debian and Ubuntu based systems, install the krb5-user, krb5-config, and keyutils packages. Now this works much in the same fashion as NFS via /net -hosts After making these changes I can do cd /cifs/smb-server-1/share-1 . Environment. In this post I will describe how to mount a Windows CIFS share from a Linux system using Kerberos authentication to a Windows Active Directory domain. Kernel support in 3.3 Allows multiuser mounts to work w/o krb5 auth Users stash username/password creds in the kernel session keyring for a host or domain Kernel can look for those creds and use them to establish new SMB sessions To-do: PAM module I have a system running RHEL 5.5, and I am trying to mount a Windows share on a server using autofs. The trick is you can try dmesg to give you a more precise message. Telefony nie mog by wyciszone, wibrujce ani "tylko na chwilk". When a user logs on, dmesg shows the following (abridged and hand-typed, as I cannot copy . Use the mutiuser switch to mount the share on behalf. NTLM works good, krb5 nfs works also good, but krb5 to a cifs share does not work. Telefony zostaj wyczone i tak zostaje do koca egzaminu. sudo mount.cifs //server/ $1 /home/DOMAIN/ $1 /D -o user=$1 ,uid =$1 ,gid = domain \ users. I have tried these commands with various syntax: I create a two node netapp simulater. First of all install the necessary pakets. EMS errors report the following: Tue Oct 20 15:07:35 -0500 [CLUSTERNAME: secd: secd.cifsAuth.problem:error]: vserver (SVMNAME) General CIFS authentication problem. That would work around this limitation of . Now if I mount the CIFS share with the multiuser option, this resolves the issue but introduces a new one. Mount Windows CIFS share on Linux server using kerberos keytab May 4, 2016 December 19, 2020 - by Andrew Lin Use kerberos ticket to mount CIFS shares on a Linux server.