[Freeipa-users] cannot access to freeipa client's linux share from windows

Fujisan fujisan43 at gmail.com
Thu Dec 1 14:12:26 UTC 2016 

Hello,

I have upgraded a client and a freeipa server from Fedora 24 to 25 recently.
And I *cannot* access linux shares located on the F25 freeipa client from a
windows desktop.
But I can access linux shares located on the F25 freeipa server from that
windows desktop.
And I can access linux shares located on the F24 freeipa client from that
windows desktop.

To be clear, I have:
  A/ 1 F25 freeipa server
  B/ 1 F25 freeipa client
  C/ 1 F24 freeipa client
  D/ 1 windows desktop

I can access linux shares of A from D.
I can access linux shares of C from D.
I *cannot* access linux shares of B from D.

I get these messages on B in /var/log/samba/log.10.0.21.247 :

[2016/12/01 11:42:19.218759,  1] ../source3/librpc/crypto/gse_
krb5.c:534(fill_mem_keytab_from_dedicated_keytab)
  ../source3/librpc/crypto/gse_krb5.c:534: smb_krb5_open_keytab failed (Key
table name malformed)
[2016/12/01 11:42:19.218800,  1] ../source3/librpc/crypto/gse_
krb5.c:627(gse_krb5_get_server_keytab)
  ../source3/librpc/crypto/gse_krb5.c:627: Error! Unable to set mem keytab
- -1765328205
[2016/12/01 11:42:19.218823,  1] ../auth/gensec/gensec_start.c:
698(gensec_start_mech)
  Failed to start GENSEC server mech gse_krb5: NT_STATUS_INTERNAL_ERROR
[2016/12/01 11:42:19.261611,  1] ../source3/librpc/crypto/gse_
krb5.c:534(fill_mem_keytab_from_dedicated_keytab)
  ../source3/librpc/crypto/gse_krb5.c:534: smb_krb5_open_keytab failed (Key
table name malformed)
[2016/12/01 11:42:19.261638,  1] ../source3/librpc/crypto/gse_
krb5.c:627(gse_krb5_get_server_keytab)
  ../source3/librpc/crypto/gse_krb5.c:627: Error! Unable to set mem keytab
- -1765328205
[2016/12/01 11:42:19.261653,  1] ../auth/gensec/gensec_start.c:
698(gensec_start_mech)
  Failed to start GENSEC server mech gse_krb5: NT_STATUS_INTERNAL_ERROR
[2016/12/01 11:42:19.263330,  2] ../source3/auth/auth.c:315(
auth_check_ntlm_password)
  check_ntlm_password:  Authentication for user [smith] -> [smith] FAILED
with error NT_STATUS_NO_SUCH_USER
[2016/12/01 11:42:19.263380,  2] ../auth/gensec/spnego.c:720(
gensec_spnego_server_negTokenTarg)
  SPNEGO login failed: NT_STATUS_NO_SUCH_USER
[2016/12/01 11:42:19.270531,  1] ../source3/librpc/crypto/gse_
krb5.c:534(fill_mem_keytab_from_dedicated_keytab)
  ../source3/librpc/crypto/gse_krb5.c:534: smb_krb5_open_keytab failed (Key
table name malformed)
[2016/12/01 11:42:19.270562,  1] ../source3/librpc/crypto/gse_
krb5.c:627(gse_krb5_get_server_keytab)
  ../source3/librpc/crypto/gse_krb5.c:627: Error! Unable to set mem keytab
- -1765328205
[2016/12/01 11:42:19.270586,  1] ../auth/gensec/gensec_start.c:
698(gensec_start_mech)
  Failed to start GENSEC server mech gse_krb5: NT_STATUS_INTERNAL_ERROR
[2016/12/01 11:42:19.313479,  1] ../source3/librpc/crypto/gse_
krb5.c:534(fill_mem_keytab_from_dedicated_keytab)
  ../source3/librpc/crypto/gse_krb5.c:534: smb_krb5_open_keytab failed (Key
table name malformed)
[2016/12/01 11:42:19.313506,  1] ../source3/librpc/crypto/gse_
krb5.c:627(gse_krb5_get_server_keytab)
  ../source3/librpc/crypto/gse_krb5.c:627: Error! Unable to set mem keytab
- -1765328205
[2016/12/01 11:42:19.313523,  1] ../auth/gensec/gensec_start.c:
698(gensec_start_mech)
  Failed to start GENSEC server mech gse_krb5: NT_STATUS_INTERNAL_ERROR
[2016/12/01 11:42:19.315256,  2] ../source3/auth/auth.c:315(
auth_check_ntlm_password)
  check_ntlm_password:  Authentication for user [smith] -> [smith] FAILED
with error NT_STATUS_NO_SUCH_USER
[2016/12/01 11:42:19.315291,  2] ../auth/gensec/spnego.c:720(
gensec_spnego_server_negTokenTarg)
  SPNEGO login failed: NT_STATUS_NO_SUCH_USER

Also from the F25 server, I have the following when I run smbclient

f25server # smbclient -k -L f25desktop.mydomain
lp_load_ex: changing to config backend registry
session setup failed: NT_STATUS_LOGON_FAILURE

But if i run it with a F24 desktop, it works:

f25server # smbclient -k -L f24desktop.mydomain
lp_load_ex: changing to config backend registry
Domain=[MYDOMAIN] OS=[Windows 6.1] Server=[Samba 4.4.7]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.4.7)
    data            Disk      /data on f24desktop
    data2           Disk      /data2 on f24desktop
    data3           Disk      /data3 on f24desktop
    backup          Disk      /backup on f24desktop
[...]


net conf list on the f25desktop gives:

f25desktop # net conf list
[global]
    workgroup = MYDOMAIN
    realm = MYDOMAIN
    netbios name = F25SERVER
    server string = Samba Server Version %v
    kerberos method = dedicated keytab
    dedicated keytab file = FILE:/etc/samba/samba.keytab
    log file = /var/log/samba/log.%m
    rpc_server:epmapper = external
    rpc_server:lsarpc = external
    rpc_server:lsass = external
    rpc_server:lsasd = external
    rpc_server:samr = external
    rpc_server:netlogon = external
    rpc_server:tcpip = yes
    rpc_daemon:epmd = fork
    rpc_daemon:lsasd = fork
    security = user
    map untrusted to domain = Yes
    smb ports = 139 445
    log level = 2

[data]
    comment = /data on f25desktop
    path = /data
    create mask = 0644
    read only = no

[data2]
    comment = /data2 on f25desktop
    path = /data2
    create mask = 0644
    read only = no

[data3]
    comment = /data3 on f25desktop
    path = /data3
    create mask = 0644
    read only = no

[backup]
    comment = /backup on f25desktop
    path = /backup
    read only = no

net conf list on the f25server gives:

f25server # net conf list
[global]
    workgroup = MYDOMAIN
    netbios name = F25SERVER
    realm = MYDOMAIN
    kerberos method = dedicated keytab
    dedicated keytab file = FILE:/etc/samba/samba.keytab
    create krb5 conf = no
    domain master = yes
    domain logons = yes
    max log size = 10000
    log file = /var/log/samba/log.%m
    passdb backend = ipasam:ldapi://%2fvar%2frun%2fslapd-MYDOMAIN.socket
    disable spoolss = yes
    ldapsam:trusted = yes
    ldap ssl = off
    ldap suffix = dc=mydomain
    ldap user suffix = cn=users,cn=accounts
    ldap group suffix = cn=groups,cn=accounts
    ldap machine suffix = cn=computers,cn=accounts
    rpc_server:epmapper = external
    rpc_server:lsarpc = external
    rpc_server:lsass = external
    rpc_server:lsasd = external
    rpc_server:samr = external
    rpc_server:netlogon = external
    rpc_server:tcpip = yes
    rpc_daemon:epmd = fork
    rpc_daemon:lsasd = fork
    security = user
    enable core files = no
    log level = 2

[homes]
    comment = Home Directories
    read only = no
    browseable = yes
    create mask = 0664
    directory mask = 0775

on the F25 server and desktop, i have the following packages installed:

samba-4.5.1-1.fc25.x86_64
samba-client-4.5.1-1.fc25.x86_64
samba-client-libs-4.5.1-1.fc25.x86_64
samba-common-4.5.1-1.fc25.noarch
samba-common-libs-4.5.1-1.fc25.x86_64
samba-common-tools-4.5.1-1.fc25.x86_64
samba-libs-4.5.1-1.fc25.x86_64
samba-python-4.5.1-1.fc25.x86_64
samba-test-4.5.1-1.fc25.x86_64
samba-test-libs-4.5.1-1.fc25.x86_64
samba-winbind-4.5.1-1.fc25.x86_64
samba-winbind-clients-4.5.1-1.fc25.x86_64
samba-winbind-krb5-locator-4.5.1-1.fc25.x86_64
samba-winbind-modules-4.5.1-1.fc25.x86_64
system-config-samba-1.2.100-5.fc24.noarch
system-config-samba-docs-1.0.9-9.fc24.noarch

Any idea what is wrong?

Regards,
Fuji
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