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Women and middle managers will lead the Great Resignation into How Windows 11 makes updates so much smaller. This is usually what you want. If this option is set to yes , then Samba will attempt to recursively delete any files and directories within the vetoed directory.
The dfree cache time should only be used on systems where a problem occurs with the internal disk space calculations. This has been known to happen with Ultrix, but may occur with other operating systems. The symptom that was seen was an error of "Abort Retry Ignore" at the end of each directory listing.
This is a new parameter introduced in Samba version 3. It specifies in seconds the time that smbd will cache the output of a disk free query.
If set to zero the default no caching is done. This allows a heavily loaded server to prevent rapid spawning of dfree command scripts increasing the load.
The dfree command setting should only be used on systems where a problem occurs with the internal disk space calculations. This setting allows the replacement of the internal routines to calculate the total disk space and amount available with an external routine. The example below gives a possible script that might fulfill this function. In Samba version 3. The external program will be passed a single parameter indicating a directory in the filesystem being queried.
This will typically consist of the string. The first should be the total disk space in blocks, and the second should be the number of available blocks. An optional third return value can give the block size in bytes.
The default blocksize is bytes. Note: Your script should NOT be setuid or setgid and should be owned by and writeable only by root! Note that you may have to replace the command names with full path names on some systems.
Also note the arguments passed into the script should be quoted inside the script in case they contain special characters such as spaces or newlines. By default internal routines for determining the disk capacity and remaining space will be used. Any bit not set here will be removed from the modes set on a directory when it is created. The default value of this parameter removes the 'group' and 'other' write bits from the UNIX mode, allowing only the user who owns the directory to modify it.
Following this Samba will bit-wise 'OR' the UNIX mode created from this parameter with the value of the force directory mode parameter. This parameter is set to by default i. This parameter specifies the size of the directory name cache for SMB1 connections.
It is not used for SMB2. Enabling this parameter will disable netbios support in Samba. Netbios is the only available form of browsing in all windows versions except for and XP. Clients that only support netbios won't be able to see your samba server when netbios support is disabled. However, this will also disable the ability to upload printer drivers to a Samba server via the Windows NT Add Printer Wizard or by using the NT printer properties dialog window.
Be very careful about enabling this parameter. This would typically be used in conjunction with a hierarchical storage system that automatically migrates files to tape. Note that Samba infers the status of a file by examining the events that a DMAPI application has registered interest in.
This heuristic is satisfactory for a number of hierarchical storage systems, but there may be system for which it will fail. In this case, Samba may erroneously report files to be offline.
This option sets the command that is called when there are DNS updates. This option should not be enabled for installations created with versions of samba before 4.
Doing this will result in the loss of static DNS entries. This is due to a bug in previous versions of samba BUG which marked dynamic DNS records as static and static records as dynamic.
The IP list is comma and space separated and specified in the same syntax as used in hosts allow , specifically including IP address, IP prefixes and IP address masks. The default behaviour is to deny any request. A request will be authorized only if the emitting client is identified in this list, and not in dns zone transfer clients deny.
If a client identified in this list sends a zone transfer request, it will always be denied, even if they are in dns zone transfer clients allow. This allows the definition of specific denied clients within an authorized subnet. If set to yes , the Samba server will provide the netlogon service for Windows 9X network logons for the workgroup it is in. This will also cause the Samba server to act as a domain controller for NT4 style domain services.
Tell smbd 8 to enable WAN-wide browse list collation. Setting this option causes nmbd to claim a special domain specific NetBIOS name that identifies it as a domain master browser for its given workgroup. Local master browsers in the same workgroup on broadcast-isolated subnets will give this nmbd their local browse lists, and then ask smbd 8 for a complete copy of the browse list for the whole wide area network.
Browser clients will then contact their local master browser, and will receive the domain-wide browse list, instead of just the list for their broadcast-isolated subnet. This means that if this parameter is set and nmbd claims the special name for a workgroup before a Windows NT PDC is able to do so then cross subnet browsing will behave strangely and may fail.
If domain logons is not enabled the default setting , then neither will domain master be enabled by default. In general, this parameter should be set to 'No' only on a BDC. There are certain directories on some systems e. This parameter allows you to specify a comma-delimited list of directories that the server should always show as empty. Note that Samba can be very fussy about the exact format of the "dont descend" entries.
For example you may need. Experimentation is the best policy This option specifies which charset Samba should talk to DOS clients. The default depends on which charsets you have installed. Run testparm 1 to check the default on your system. Enabling this parameter allows a user who has write access to the file by whatever means, including an ACL permission to modify the permissions including ACL on it. Note that a user belonging to the group owning the file will not be allowed to change permissions if the group is only granted read access.
Setting this parameter for a share causes Samba to round the reported time down to the nearest two second boundary when a query call that requires one second resolution is made to smbd 8. One of these calls uses a one-second granularity, the other uses a two second granularity.
Under DOS and Windows, if a user can write to a file they can change the timestamp on it. By default, Samba emulates the DOS semantics and allows one to change the timestamp on a file if the user smbd is acting on behalf has write permissions. Due to changes in Microsoft Office and beyond, the default for this parameter has been changed from "no" to "yes" in Samba 3. Microsoft Excel will display dialog box warnings about the file being changed by another user if this parameter is not set to "yes" and files are being shared between users.
When enabled, this option causes Samba acting as an Active Directory Domain Controller to stream Samba database events across the internal message bus. When enabled, this option causes Samba acting as an Active Directory Domain Controller to stream group membership change events across the internal message bus.
When enabled, this option causes Samba acting as an Active Directory Domain Controller to stream password change and reset events across the internal message bus.
This boolean parameter controls whether Samba can grant SMB2 durable file handles on a share. Also note that, for the time being, durability is not granted for a handle that has the delete on close flag set. This boolean parameter controls whether smbd 8 will allow clients to attempt to access extended attributes on a share. In order to enable this parameter on a setup with default VFS modules:. The underlying filesystem exposed by the share must support extended attributes e.
Note that the SMB protocol allows setting attributes whose value is 64K bytes long, and that on NTFS, the maximum storage space for extended attributes per file is 64K. Giving clients access to this tight space via extended attribute support could consume all of it by unsuspecting client applications, which would prevent changing system metadata due to lack of space.
The default has changed to yes in Samba release 4. Specifies the name of the Elasticsearch server to use for Spotlight queries when using the Elasticsearch backend. Specifies the name of the Elasticsearch index to use for Spotlight queries when using the Elasticsearch backend. Path to a file specifying metadata attribute mappings in JSON format. A value of 0 means no limit. The has been the default behavior in smbd for many years.
This parameter specifies whether core dumps should be written on internal exits. This deprecated parameter controls whether or not smbd will honor privileges assigned to specific SIDs via either net rpc rights or one of the Windows user and group manager tools. This parameter is enabled by default. It can be disabled to prevent members of the Domain Admins group from being able to assign privileges to users or groups which can then result in certain smbd operations running as root that would normally run under the context of the connected user.
An example of how privileges can be used is to assign the right to join clients to a Samba controlled domain without providing root access to the server via smbd.
Inverted synonym for disable spoolss. This boolean controls whether encrypted passwords will be negotiated with the client. Note that Windows NT 4. MS Windows clients that expect Microsoft encrypted passwords and that do not have plain text password support enabled will be able to connect only to a Samba server that has encrypted password support enabled and for which the user accounts have a valid encrypted password. Refer to the smbpasswd command man page for information regarding the creation of encrypted passwords for user accounts.
The use of plain text passwords is NOT advised as support for this feature is no longer maintained in Microsoft Windows products. If you want to use plain text passwords you must set this parameter to no.
This option enables a couple of enhancements to cross-subnet browse propagation that have been added in Samba but which are not standard in Microsoft implementations. The first enhancement to browse propagation consists of a regular wildcard query to a Samba WINS server for all Domain Master Browsers, followed by a browse synchronization with each of the returned DMBs.
The second enhancement consists of a regular randomised browse synchronization with all currently known DMBs. You may wish to disable this option if you have a problem with empty workgroups not disappearing from browse lists. Due to the restrictions of the browse protocols, these enhancements can cause a empty workgroup to stay around forever which can be annoying.
In general you should leave this option enabled as it makes cross-subnet browse propagation much more reliable. The concept of a "port" is fairly foreign to UNIX hosts. LPD Port Monitor, etc By default, Samba has only one port defined-- "Samba Printer Port". If you wish to have a list of ports displayed smbd does not use a port name for anything other than the default "Samba Printer Port" , you can define enumports command to point to a program which should generate a list of ports, one per line, to standard output.
This option defines a list of log names that Samba will report to the Microsoft EventViewer utility. Refer to the eventlogadm 8 utility for how to write eventlog entries. This is not the same as the ctime - status change time - that Unix keeps, so Samba by default reports the earliest of the various times Unix does keep. Setting this parameter for a share causes Samba to always report midnight as the create time for directories.
Thus the object directory will be created if it does not exist, but once it does exist it will always have an earlier timestamp than the object files it contains. However, Unix time semantics mean that the create time reported by Samba will be updated whenever a file is created or deleted in the directory.
NMAKE finds all object files in the object directory. The timestamp of the last one built is then compared to the timestamp of the object directory. If the directory's timestamp if newer, then all object files will be rebuilt. Enabling this option ensures directories always predate their contents and an NMAKE build will proceed as expected. Oplocks are the way that SMB clients get permission from a server to locally cache file operations. If a server grants an oplock opportunistic lock then the client is free to assume that it is the only one accessing the file and it will aggressively cache file data.
This can give enormous performance benefits. It is generally much better to use the real oplocks support rather than this parameter. If you enable this option on all read-only shares or shares that you know will only be accessed from one client at a time such as physically read-only media like CDROMs, you will see a big performance improvement on many operations.
If you enable this option on shares where multiple clients may be accessing the files read-write at the same time you can get data corruption. Use this option carefully! This parameter allows the Samba administrator to stop smbd 8 from following symbolic links in a particular share. Setting this parameter to no prevents any file or directory that is a symbolic link from being followed the user will get an error.
However it will slow filename lookups down slightly. This option is enabled i. This parameter specifies a set of UNIX mode bit permissions that will always be set on a file created by Samba. This is done by bitwise 'OR'ing these bits onto the mode bits of a file that is being created. The default for this parameter is in octal The modes in this parameter are bitwise 'OR'ed onto the file mode after the mask set in the create mask parameter is applied.
This parameter specifies a set of UNIX mode bit permissions that will always be set on a directory created by Samba. This is done by bitwise 'OR'ing these bits onto the mode bits of a directory that is being created. The default for this parameter is in octal which will not add any extra permission bits to a created directory. This operation is done after the mode mask in the parameter directory mask is applied.
This specifies a UNIX group name that will be assigned as the default primary group for all users connecting to this service. This is useful for sharing files by ensuring that all access to files on service will use the named group for their permissions checking.
Thus, by assigning permissions for this group to the files and directories within this service the Samba administrator can restrict or allow sharing of these files. In Samba 2. This allows an administrator to decide that only users who are already in a particular group will create files with group ownership set to that group. This gives a finer granularity of ownership assignment. All other users will retain their ordinary primary group. If the force user parameter is also set the group specified in force group will override the primary group set in force user.
When printing from Windows NT or later , each printer in smb. The first is the sharename or shortname defined in smb. This is the only printername available for use by Windows 9x clients. The second name associated with a printer can be seen when browsing to the "Printers" or "Printers and Faxes" folder on the Samba server.
This is referred to simply as the printername not to be confused with the printer name option. When assigning a new driver to a printer on a remote Windows compatible print server such as Samba, the Windows client will rename the printer to match the driver name just uploaded.
This can result in confusion for users when multiple printers are bound to the same driver. To prevent Samba from allowing the printer's printername to differ from the sharename defined in smb. Be aware that enabling this parameter may affect migrating printers from a Windows server to Samba since Windows has no way to force the sharename and printername to match.
It is recommended that this parameter's value not be changed once the printer is in use by clients as this could cause a user not be able to delete printer connections from their local Printers folder. This boolean option tells smbd whether to forcefully disable the use of Open File Description locks on Linux. If this parameter is set, a Windows NT ACL that contains an unknown SID security descriptor, or representation of a user or group id as the owner or group owner of the file will be silently mapped into the current UNIX uid or gid of the currently connected user.
This specifies a UNIX user name that will be assigned as the default user for all users connecting to this service. This is useful for sharing files. You should also use it carefully as using it incorrectly can cause security problems.
This user name only gets used once a connection is established. Thus clients still need to connect as a valid user and supply a valid password. Once connected, all file operations will be performed as the "forced user", no matter what username the client connected as. This can be very useful. Prior to 2. FSRVP timeouts can be completely disabled via a value of 0. This parameter allows the administrator to configure the string that specifies the type of filesystem a share is using that is reported by smbd 8 when a client queries the filesystem type for a share.
The get quota command should only be used whenever there is no operating system API available from the OS that samba can use. The directory is actually mostly just ".
This script should print one line as output with spaces between the columns. The printed columns should be:. This is a tuning option. When this is enabled a caching algorithm will be used to reduce the time taken for getwd calls. This can have a significant impact on performance, especially when the wide links parameter is set to no. This option sets the command that is called to apply GPO policies. Kerberos Policies set kdc:service ticket lifetime, kdc:user ticket lifetime, and kdc:renewal lifetime in smb.
This is a username which will be used for access to services which are specified as guest ok see below. Whatever privileges this user has will be available to any client connecting to the guest service. This user must exist in the password file, but does not require a valid login. The user account "ftp" is often a good choice for this parameter. On some systems the default guest account "nobody" may not be able to print.
Use another account in this case. You should test this by trying to log in as your guest user perhaps by using the su - command and trying to print using the system print command such as lpr 1 or lp 1. If this parameter is yes for a service, then no password is required to connect to the service. Privileges will be those of the guest account. If this parameter is yes for a service, then only guest connections to the service are permitted.
This parameter will have no effect if guest ok is not set for the service. This is a boolean parameter that controls whether files starting with a dot appear as hidden files. This is a list of files or directories that are not visible but are accessible. The DOS 'hidden' attribute is applied to any files or directories that match. Setting this parameter will affect the performance of Samba, as it will be forced to check all files and directories for a match as they are scanned.
The example shown above is based on files that the Macintosh SMB client DAVE available from Thursby creates for internal use, and also still hides all files beginning with a dot.
Setting this parameter to something but 0 hides files that have been modified less than N seconds ago. A processing application should only see files that are definitely finished. As many applications do not have proper external workflow control, this can be a way to make sure processing does not interfere with file ingest.
This parameter prevents clients from seeing special files such as sockets, devices and fifo's in directory listings. This parameter prevents clients from seeing the existence of files that cannot be read.
Defaults to off. Please note that enabling this can slow down listing large directories significantly. Samba has to evaluate the ACLs of all directory members, which can be a lot of effort. This parameter prevents clients from seeing the existence of files that cannot be written to. Note that unwriteable directories are shown as usual. This option can be used to make use of the change notify privilege. By default notify results are not checked against the file system permissions.
If "honor change notify privilege" is enabled, a user will only receive notify results, if he has change notify privilege or sufficient file system permissions. If a user has the change notify privilege, he will receive all requested notify results, even if the user does not have the permissions on the file system.
If set to yes , Samba will act as a Dfs server, and allow Dfs-aware clients to browse Dfs trees hosted on the server. See also the msdfs root share level parameter. Specifies whether samba should use expensive hostname lookups or use the ip addresses instead. An example place where hostname lookups are currently used is when checking the hosts deny and hosts allow.
A synonym for this parameter is allow hosts. This parameter is a comma, space, or tab delimited set of hosts which are permitted to access a service. If specified in the [global] section then it will apply to all services, regardless of whether the individual service has a different setting.
You can specify the hosts by name or IP number. Note that this man page may not be present on your system, so a brief description will be given here also. Note that the localhost address The following examples may provide some help:. See testparm 1 for a way of testing your host access to see if it does what you expect.
The opposite of hosts allow - hosts listed here are NOT permitted access to services unless the specific services have their own lists to override this one. Where the lists conflict, the allow list takes precedence. In the event that it is necessary to deny all by default, use the keyword ALL or the netmask 0. By default, Samba will cache these results for one week. This is performed by Winbindd with a configurable plugin interface.
Samba's ID mapping is configured by options starting with the idmap config prefix. The idmap configuration is hence divided into groups, one group for each domain to be configured, and one group with the asterisk instead of a proper domain name, which specifies the default configuration that is used to catch all domains that do not have an explicit idmap configuration of their own.
The corresponding manual pages contain the details, but here is a summary. The first three of these create mappings of their own using internal unixid counters and store the mappings in a database. These are suitable for use in the default idmap configuration. The rid and hash backends use a pure algorithmic calculation to determine the unixid for a SID.
The autorid module is a mixture of the tdb and rid backend. It creates ranges for each domain encountered and then uses the rid algorithm for each of these automatically configured domains individually. The ad backend uses unix ids stored in Active Directory via the standard schema extensions. The nss backend reverses the standard winbindd setup and gets the unix ids via names from nsswitch which can be useful in an ldap setup.
Defines the available matching uid and gid range for which the backend is authoritative. For allocating backends, this also defines the start and the end of the range for allocating new unique IDs. The configured ranges must be mutually disjoint. This option can be used to turn the writing backends tdb, tdb2, and ldap into read only mode.
This can be useful e. This configuration assumes that the admin of CORP assigns unix ids below via the SFU extensions, and winbind is supposed to use the next million entries for its own mappings from trusted domains and for local groups for example. The idmap gid parameter specifies the range of group ids for the default idmap configuration.
See the idmap config option. The idmap uid parameter specifies the range of user ids for the default idmap configuration. See also create krb5 conf. This allows you to include one config file inside another. The file is included literally, as though typed in place. See the section on registry-based configuration for details. Note that this option automatically activates registry shares.
This parameter can be used to ensure that if default acls exist on parent directories, they are always honored when creating a new file or subdirectory in these parent directories. The default behavior is to use the unix mode specified when creating the directory.
Specify the realm of the Kerberos server in the Kerberos Realm field. The server passes the username and password to the Controller and waits for it to return. The Encrypted Passwords option must be set to Yes if this is selected. Server — The Samba server tries to verify the username and password combination by passing them to another Samba server. If it can not, the server tries to verify using the user authentication mode. Share — Samba users do not have to enter a username and password combination on a per Samba server basis.
They are not prompted for a username and password until they try to connect to a specific shared directory from a Samba server. User — Default Samba users must provide a valid username and password on a per Samba server basis.
Select this option if you want the Windows Username option to work. Refer to Section Encrypt Passwords — This option must be enabled if the clients are connecting from a system with Windows 98, Windows NT 4. The passwords are transfered between the server and the client in an encrypted format instead of as a plain-text word that can be intercepted. This corresponds to the encrypted passwords option.
Guest Account — When users or guest users log into a Samba server, they must be mapped to a valid user on the server. Select one of the existing usernames on the system to be the guest Samba account.
When guests log in to the Samba server, they have the same privileges as this user. So the next step is to create the directory tree on disk that will be exported, as well as the share section in smb.
Samba requires that the directory path being shared actually exist in order for clients to connect it. The service details in smb.
The [data] share is typical for a Samba disk share. As a result, the read only option must be explicitly disabled for each disk share that is intended to be writable. Table lists the basic Samba configuration options previously introduced for disk shares. Specifies the Unix directory that will be provided for a disk share or used for spooling by a printer share. Inverse of read only. This option, which has the synonym directory , indicates the absolute pathname for the root of the shared directory or printer.
You can choose any directory on the Samba server. The comment option allows you to enter a free-form string that is transmitted to the client when it attempts to browse the share. A user can see the comment by using the Details view on the share folder or with the net view command at a Windows command prompt. For example, here is how you might insert a comment for a share:. This option allows you to specify the volume name of the share, which would otherwise default to the name of the share given in the smb.
If you copy the contents of the CD-ROM into a network share and wish to install from there, you can use this option to make sure the installation program sees the correct volume name:. The options read only and writable also called writeable or write ok are inverse Boolean options. Both default to enforcing read-only behavior on a file share but in a logically opposite fashion.
If you want to be able to write data to a share, you must explicitly specify one of the following options in the configuration file for each share:. Samba treats both parameters as the same feature. If you specify more than one occurrence of either or both options, Samba adheres to the last value it encounters for the share.
By default, both smbd and nmbd bind to all available broadcast-capable network interfaces on a system. There are times when you may wish to restrict this behavior, such as on a multihomed host that acts as a gateway from the internal network to the Internet, or perhaps on a laptop that has both a local network connection and a dial-up VPN connection.
Assume that our Samba server can access two subnets. The device eth0 is is bound to the If Samba is not supposed to advertise itself on the These two parameters, which are always used together, work in combination to restrict smbd and nmbd to the specified networks. The bind interfaces only option limits the behavior of smbd and nmbd to the subnets represented by the interfaces list.
It is important to realize, however, that if packets can be routed between the two networks in our example, a client on the A second alternative to restricting traffic is the hosts allow and hosts deny options. Unlike the previous two global parameters, these new options can be used on a per-service basis. The purpose of these options is identical to those files; they provide security by allowing or denying the connections of other hosts based on their IP addresses.
However, Samba includes its own internal implementation of the TCP Wrappers functionality, so there is no need for additional external libraries or configuration files. Notice that we have removed the interfaces and bind interfaces only lines to ensure that smbd and nmbd bind to both eth0 and eth1 :. Without this ending puncutation, Samba does not correctly interpret the address as a network. We have also added a single host from the It is important to understand how Samba sorts out the rules specified by hosts allow and hosts deny :.
If no allow or deny options are defined anywhere in smb. If hosts allow or hosts deny options are defined in the [global] section of smb. If only a hosts allow option is defined for a share, only the hosts listed are allowed to use the share.
All others are denied. If only a hosts deny option is defined for a share, any client that is not on the list can use the share. If both a hosts allow option and a hosts deny option are defined, the allow list takes precendence. But if a host does not match the allow list or the deny list, it is granted implicit access.
In this case, hosts that belong to the subnet The deny list in the case is completely disregarded because it is a subset of the allow list. To allow all hosts in the The networking options introduced earlier are summarized in Table When enabled, Samba will bind only to those interfaces specified by the interfaces option. The hosts allow option sometimes written as allow hosts specifies the clients that have permission to access shares on the Samba server, written as a comma- or space-separated list of hostnames of systems or their IP addresses.
Domain names, which can be differentiated from individual hostnames because they start with a dot. For example,. Netgroups, which start with an at sign , such as printerhosts. If netgroups are supported on your system, there should be a netgroups manual page that describes them in more detail. Subnets, which end with a dot. For example, For example, you could specify that Samba allow all hosts except those on the The hostname localhost , for the loopback address This address is required for Samba to work properly.
Other than that, there is no default value for the hosts allow configuration option. The default course of action, in the event that neither the hosts allow or hosts deny option is specified in smb. If you specify hosts allow or hosts deny in the [global] section, that definition applies to all connections to the server. In a sense, this definition overrides any hosts allow lines in the share definitions, which is the opposite of the usual behavior.
In actuality, the service level definition applies to the tree connection requests described in Chapter 1 and the [global] defaults apply to all packets prior to that request i.
The hosts deny option synonymous with deny hosts specifies client systems that do not have permission to access a share, written as a comma- or space-separated list of hostnames or their IP addresses.
Use the same format for specifying clients as the hosts allow option earlier. For example, to restrict access to the server from everywhere but the subnet example. There is no default value for the hosts deny configuration option, although the default course of action in the event that neither option is specified is to allow access from all sources. Never include the loopback address localhost at IP address If the loopback address is disabled, the locally generated packets requesting the change of the encrypted password are discarded by Samba.
In addition, both local browsing propagation and some functions of SWAT require access to the Samba server through the loopback address and do not work correctly if this address is disabled.
The interfaces option specifies the networks that you want the Samba server to recognize and respond to. This option is handy if you have a computer that resides on more than one network subnet and want to restrict the networks that Samba will serve.
If this option is not set, Samba searches out and utilizes all broadcast-capable network interfaces on the server, including loopback devices.
The loopback interface lo is automatically added to this list. The bind interfaces only option can be used to force the smbd and nmbd processes to respond only to those addresses specified by the interfaces option and to loopback network devices.
To prevent Samba from processing any packets including broadcast packets whose source address does not correspond to any of the network interfaces specified by the interfaces option, define the following line in addition to a list of interfaces:. Virtualization has become a hot topic in recent years.
Unix administrators have a longer history managing virtual services. In fact, nothing but the standard TCP and IP headers are available in the initial connection request packet. There are two solutions to this problem. By default, smbd binds to TCP ports and However, the smb ports option allows administrators to restrict smbd solely to TCP port and thus force the clients to use NetBIOS services for locating and accessing a Samba host.
The only piece of information yet presented is the option for defining additional NetBIOS names to which the server will respond. Now to put all the pieces together. Figure illlustrates how the virtual servers would appear when browsing the network. To support virtual configurations over port , the server must possess multiple network interfaces, although they do not necessarily have to be real interfaces; virtual interfaces work also. In this case, the destination IP address transmitted in the connection request determines what role the Samba server should play.
In this case, the configuration can drop the netbios aliases option and add the new names to the domain name service. If the server has three IP addresses, Notice that we have removed the smb ports line, so the parameter reverts to the default of both and Having removed the netbios aliases option, we enter the hostnames into our DNS server:. None of the Windows NT-based operating systems are subject to this limitation.
Table summaries the new parameters necessary for configuring virtual Samba hosts. List of port numbers to which smbd should listen for incoming CIFS requests.
When a connection is requested to any of the servers, it connects to the same Samba server. The smb ports parameter controls the TCP ports on which smbd listens. The default list, ports and , matches Windows and later servers. A more common use is to restrict smbd to only one of the default ports, such as forcing clients to use NetBIOS transport services:.
To find out why Samba did what it did, check the logfiles. Samba logfiles can be as brief or verbose as you like. Here is an example of what a Samba logfile at level 3 looks like:. Much of this information is of use only to Samba programmers. However, we go over the meaning of some of these entries in more detail in Chapter Samba includes several options that allow administrators to define the granularity, verbosity, and location of logfiles.
Each of these are global options and cannot appear inside a share definition. Here are some of the more common logging options that you might use on a production server:. This is a relatively light debugging level. The logging level ranges from 0 to 10; level 0 provides only critical error messages and level 10 provides a plethora of low-level information.
In practice, avoid using log levels greater than 3 unless you are working on the Samba source code or temporaily debugging a specific problem. Isolating the log messages can be invaluable in tracking down a network error if you know the problem is coming from a specific client system or user.
A common question is why two logfiles are created for each client machine when the logfile is defined as log. The reason is the use of port by newer Windows operating systems. If a logfile exceeds this size, the contents are moved to a file with the same name but with the suffix. If the. The original file is cleared, waiting to receive new logging information.
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