On to, 01 joulu 2016, Fujisan wrote:
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
There seem to be a change in Samba 4.5.0 which uses 'dedicated keytab
file' value as it is when constructing a memory keytab. As result,
libkrb5 is confused and does not know which keytab processing routine to
use (MEMORY:FILE:/etc/samba/samba.keytab is invalid).
You can replace the value by removing FILE: right now:
net conf setparm global 'dedicated keytab file' /etc/samba/samba.keytab
When no prefix is used, libkrb5 will default to FILE: itself.
We are going to look at changing the Samba code to strip the prefix from
the 'dedicated keytab file' when applying it to memory-based keytabs.
--
/ Alexander Bokovoy
--
Manage your subscription for the Freeipa-users mailing list:
https://www.redhat.com/mailman/listinfo/freeipa-users
Go to http://freeipa.org for more info on the project