Samba: allow insecure wide links Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) Come Celebrate our 10 Year Anniversary!Samba Permissions - I'm going to throw it!Can't create or follow symlinks from linux client with a cifs mounted Windows Server 2008 R2 shareBest Management Practices for using Winbind?Can Samba “security = user” be used for guest share without Windows login prompt?Can't access samba share over VPNConfiguring a truly world-writable directory for SambaImport Active Directory users into Unix/Linux/FreeBSD groupSamba Ignoring POSIX ACLsSamba Security - Set permissions for anyone write on share (root and others)Cannot share /proc/<pid>/root in dockerized samba
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Samba: allow insecure wide links
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
Come Celebrate our 10 Year Anniversary!Samba Permissions - I'm going to throw it!Can't create or follow symlinks from linux client with a cifs mounted Windows Server 2008 R2 shareBest Management Practices for using Winbind?Can Samba “security = user” be used for guest share without Windows login prompt?Can't access samba share over VPNConfiguring a truly world-writable directory for SambaImport Active Directory users into Unix/Linux/FreeBSD groupSamba Ignoring POSIX ACLsSamba Security - Set permissions for anyone write on share (root and others)Cannot share /proc/<pid>/root in dockerized samba
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
allow insecure wide links:
In normal operation the option wide links which allows the server to
follow symlinks outside of a share path is automatically disabled when
unix extensions are enabled on a Samba server. This is done for
security purposes to prevent UNIX clients creating symlinks to areas
of the server file system that the administrator does not wish to
export.
Setting allow insecure wide links to true disables the link between
these two parameters, removing this protection and allowing a site to
configure the server to follow symlinks (by setting wide links to
"true") even when unix extensions is turned on.
According to manual setting allow insecure wide links = yes should be enough to allow symlinks outside the shared path however it's not working for me unless I set unix extensions = no.
testparm is not even showing this variable?!
# testparm -s
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
Processing section "[Public]"
Loaded services file OK.
Server role: ROLE_STANDALONE
[global]
workgroup = test
server string = SambaBox
syslog = 0
log file = /var/log/samba/smb.log
max log size = 50
smb ports = 139
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
load printers = No
printcap name = /dev/null
disable spoolss = Yes
show add printer wizard = No
idmap config * : backend = tdb
[Public]
comment = Public
path = /data/Public
valid users = smbguest
create mask = 0644
force create mode = 0644
force directory mode = 0755
map archive = No
wide links = Yes
samba
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
add a comment |
allow insecure wide links:
In normal operation the option wide links which allows the server to
follow symlinks outside of a share path is automatically disabled when
unix extensions are enabled on a Samba server. This is done for
security purposes to prevent UNIX clients creating symlinks to areas
of the server file system that the administrator does not wish to
export.
Setting allow insecure wide links to true disables the link between
these two parameters, removing this protection and allowing a site to
configure the server to follow symlinks (by setting wide links to
"true") even when unix extensions is turned on.
According to manual setting allow insecure wide links = yes should be enough to allow symlinks outside the shared path however it's not working for me unless I set unix extensions = no.
testparm is not even showing this variable?!
# testparm -s
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
Processing section "[Public]"
Loaded services file OK.
Server role: ROLE_STANDALONE
[global]
workgroup = test
server string = SambaBox
syslog = 0
log file = /var/log/samba/smb.log
max log size = 50
smb ports = 139
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
load printers = No
printcap name = /dev/null
disable spoolss = Yes
show add printer wizard = No
idmap config * : backend = tdb
[Public]
comment = Public
path = /data/Public
valid users = smbguest
create mask = 0644
force create mode = 0644
force directory mode = 0755
map archive = No
wide links = Yes
samba
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
1
If testparm doesn't show a variable, then it is set to the default value.
– Cameron Kerr
Apr 22 '15 at 9:40
2
If pointing to the directory proves unworkable, perhaps a bind mount would work (something likemount -o bind /a_dir /here_also).
– Cameron Kerr
Apr 22 '15 at 9:43
add a comment |
allow insecure wide links:
In normal operation the option wide links which allows the server to
follow symlinks outside of a share path is automatically disabled when
unix extensions are enabled on a Samba server. This is done for
security purposes to prevent UNIX clients creating symlinks to areas
of the server file system that the administrator does not wish to
export.
Setting allow insecure wide links to true disables the link between
these two parameters, removing this protection and allowing a site to
configure the server to follow symlinks (by setting wide links to
"true") even when unix extensions is turned on.
According to manual setting allow insecure wide links = yes should be enough to allow symlinks outside the shared path however it's not working for me unless I set unix extensions = no.
testparm is not even showing this variable?!
# testparm -s
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
Processing section "[Public]"
Loaded services file OK.
Server role: ROLE_STANDALONE
[global]
workgroup = test
server string = SambaBox
syslog = 0
log file = /var/log/samba/smb.log
max log size = 50
smb ports = 139
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
load printers = No
printcap name = /dev/null
disable spoolss = Yes
show add printer wizard = No
idmap config * : backend = tdb
[Public]
comment = Public
path = /data/Public
valid users = smbguest
create mask = 0644
force create mode = 0644
force directory mode = 0755
map archive = No
wide links = Yes
samba
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
allow insecure wide links:
In normal operation the option wide links which allows the server to
follow symlinks outside of a share path is automatically disabled when
unix extensions are enabled on a Samba server. This is done for
security purposes to prevent UNIX clients creating symlinks to areas
of the server file system that the administrator does not wish to
export.
Setting allow insecure wide links to true disables the link between
these two parameters, removing this protection and allowing a site to
configure the server to follow symlinks (by setting wide links to
"true") even when unix extensions is turned on.
According to manual setting allow insecure wide links = yes should be enough to allow symlinks outside the shared path however it's not working for me unless I set unix extensions = no.
testparm is not even showing this variable?!
# testparm -s
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
Processing section "[Public]"
Loaded services file OK.
Server role: ROLE_STANDALONE
[global]
workgroup = test
server string = SambaBox
syslog = 0
log file = /var/log/samba/smb.log
max log size = 50
smb ports = 139
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
load printers = No
printcap name = /dev/null
disable spoolss = Yes
show add printer wizard = No
idmap config * : backend = tdb
[Public]
comment = Public
path = /data/Public
valid users = smbguest
create mask = 0644
force create mode = 0644
force directory mode = 0755
map archive = No
wide links = Yes
samba
samba
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
asked Apr 19 '15 at 10:35
HTFHTF
1,04993868
1,04993868
1
If testparm doesn't show a variable, then it is set to the default value.
– Cameron Kerr
Apr 22 '15 at 9:40
2
If pointing to the directory proves unworkable, perhaps a bind mount would work (something likemount -o bind /a_dir /here_also).
– Cameron Kerr
Apr 22 '15 at 9:43
add a comment |
1
If testparm doesn't show a variable, then it is set to the default value.
– Cameron Kerr
Apr 22 '15 at 9:40
2
If pointing to the directory proves unworkable, perhaps a bind mount would work (something likemount -o bind /a_dir /here_also).
– Cameron Kerr
Apr 22 '15 at 9:43
1
1
If testparm doesn't show a variable, then it is set to the default value.
– Cameron Kerr
Apr 22 '15 at 9:40
If testparm doesn't show a variable, then it is set to the default value.
– Cameron Kerr
Apr 22 '15 at 9:40
2
2
If pointing to the directory proves unworkable, perhaps a bind mount would work (something like
mount -o bind /a_dir /here_also).– Cameron Kerr
Apr 22 '15 at 9:43
If pointing to the directory proves unworkable, perhaps a bind mount would work (something like
mount -o bind /a_dir /here_also).– Cameron Kerr
Apr 22 '15 at 9:43
add a comment |
1 Answer
1
active
oldest
votes
If you enabled wide link support but it does not work, SELINUX is probably blocking you.
Try to issue setenforce 0 and to retest your configuration. If it works, then you found your problem's source.
If this does not work, in [global] section add:
- wide links = yes
- allow insecure wide links = yes
- unix extensions = no
Than restart samba and re-try your test case.
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
Yes, that works however I don't want to disableunix extensionsand if I understand manual correctlyallow insecure wide links = yesshould help but it doesn't work for me.
– HTF
Apr 19 '15 at 20:54
3
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you enabled wide link support but it does not work, SELINUX is probably blocking you.
Try to issue setenforce 0 and to retest your configuration. If it works, then you found your problem's source.
If this does not work, in [global] section add:
- wide links = yes
- allow insecure wide links = yes
- unix extensions = no
Than restart samba and re-try your test case.
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
Yes, that works however I don't want to disableunix extensionsand if I understand manual correctlyallow insecure wide links = yesshould help but it doesn't work for me.
– HTF
Apr 19 '15 at 20:54
3
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
add a comment |
If you enabled wide link support but it does not work, SELINUX is probably blocking you.
Try to issue setenforce 0 and to retest your configuration. If it works, then you found your problem's source.
If this does not work, in [global] section add:
- wide links = yes
- allow insecure wide links = yes
- unix extensions = no
Than restart samba and re-try your test case.
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
Yes, that works however I don't want to disableunix extensionsand if I understand manual correctlyallow insecure wide links = yesshould help but it doesn't work for me.
– HTF
Apr 19 '15 at 20:54
3
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
add a comment |
If you enabled wide link support but it does not work, SELINUX is probably blocking you.
Try to issue setenforce 0 and to retest your configuration. If it works, then you found your problem's source.
If this does not work, in [global] section add:
- wide links = yes
- allow insecure wide links = yes
- unix extensions = no
Than restart samba and re-try your test case.
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
If you enabled wide link support but it does not work, SELINUX is probably blocking you.
Try to issue setenforce 0 and to retest your configuration. If it works, then you found your problem's source.
If this does not work, in [global] section add:
- wide links = yes
- allow insecure wide links = yes
- unix extensions = no
Than restart samba and re-try your test case.
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
edited Apr 19 '15 at 15:28
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
answered Apr 19 '15 at 11:21
shodanshokshodanshok
26.8k34788
26.8k34788
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
Yes, that works however I don't want to disableunix extensionsand if I understand manual correctlyallow insecure wide links = yesshould help but it doesn't work for me.
– HTF
Apr 19 '15 at 20:54
3
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
add a comment |
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
Yes, that works however I don't want to disableunix extensionsand if I understand manual correctlyallow insecure wide links = yesshould help but it doesn't work for me.
– HTF
Apr 19 '15 at 20:54
3
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
Unfortunately it's not SELinux, I've disabled it in order to test this.
– HTF
Apr 19 '15 at 14:55
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
I've edited my answer, give it a look.
– shodanshok
Apr 19 '15 at 15:29
Yes, that works however I don't want to disable
unix extensions and if I understand manual correctly allow insecure wide links = yes should help but it doesn't work for me.– HTF
Apr 19 '15 at 20:54
Yes, that works however I don't want to disable
unix extensions and if I understand manual correctly allow insecure wide links = yes should help but it doesn't work for me.– HTF
Apr 19 '15 at 20:54
3
3
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
From my experience I found every second paragraph in the samba man pages to provide unclear or inconsistent information. The only way to achieve what you want is by setting this variables mentioned by @shodanshok. This is what I did and it works like a charm. Make sure you understand what the 'unix extensions' are how they can help. But honestly speaking they tend to cause issues with permissions. Plus they make no difference to the Windows clients, so why keep it on?
– koullislp
Apr 24 '15 at 13:06
add a comment |
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1
If testparm doesn't show a variable, then it is set to the default value.
– Cameron Kerr
Apr 22 '15 at 9:40
2
If pointing to the directory proves unworkable, perhaps a bind mount would work (something like
mount -o bind /a_dir /here_also).– Cameron Kerr
Apr 22 '15 at 9:43