UCS 2.4 - Univention

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4 <strong>Univention</strong> Directory Manager DHCP servers with a common configuration are compiled in a DHCP service. Global configuration parameters are entered in the DHCP service; specific parameters in the subordinate objects. A number of DHCP servers within one DHCP service can be used if only fixed IP addresses are assigned. If variable IP addresses are also assigned, a maximum of two DHCP servers can be used in combination with the DHCP failover mechanism. A DHCP host entry is used to make the DHCP service aware of a computer. These computer entries can be created automatically when adding or editing a computer in computer management or in the navigation. A computer entry is required for computers attempting to retrieve a fixed IP address over the DHCP. A DHCP subnet entry is required for every subnet, irrespective of whether variable IP addresses are allocated from this subnet. Configuration parameters can be assigned to the different IP ranges by creating DHCP pools within subnets. In this way unknown computers can be allowed in one IP range and excluded in another IP range. DHCP failover can also be set-up in DHCP pool objects. DHCP pools can only be created below DHCP subnet objects. If several subnets use the same common, physical network, this should be entered as a DHCP shared subnet below a DHCP shared network. DHCP shared subnet objects can only be created below DHCP shared network objects. Instead of DHCP group declarations, containers can be created to accept the objects to be grouped. The parameters of such an object group are determined via a policy, which is linked to the container. Values which are input on a DHCP configuration level always apply for this level and all subordinate levels, unless other values are specified there. Similar to with the policies, the value which is closest to the object always applies. Unlike for the general policies, it is not possible here to set it so that a value cannot be altered from lower levels. Attention: Note that values assigned to an object via a policy are inherited by all subordinate objects. For example, if the domain name company.com is fixed in a DHCP service object via a policy and a DHCP host object is created in the same DHCP service object, the DHCP host object automatically adopts the domain name because of the inherited policy settings. If the DHCP host object now retrieves an IP address from a DHCP pool where the domain name sales.company.com was entered, the domain name company.com will remain valid for the DHCP host object. This applies to all settings which are made on tabs where the writing at the top of the tab is enclosed in square brackets. The inherited values are displayed on the respective tabs of the subordinate objects and can be altered there (see also Chapter 4.5.11). The following policies can be applied for the DHCP objects described below: 102 • Boot parameters • DHCP miscellaneous • DNS • DNS update • Allow/Forbid
• Lease time • NetBIOS • Routing More information on these can be found in Chapter 4.5.11.5. 4.5.10.1 DHCP service 4.5 <strong>Univention</strong> Directory Manager modules DHCP services are stored in the dhcp container by default, which is automatically created when the domains are created. ’General’ tab Service name (*) Any unique name can be entered in this entry field for the DHCP service. The following parameters are often set at this level which then apply to all the computers which are served by this DHCP service (unless other values are entered in lower levels): • Domain name and Domain name servers on the [DNS] tab • NetBIOS name servers on the [NetBIOS] tab A description of this and the other input possibilities in the policy-based tabs can be found in Chap- ter 4.5.11.5. 4.5.10.2 DHCP server Each server which should offer the DCHP service requires a DHCP server entry in the LDAP directory. Otherwise the DHCP service will not be started. To add the DHCP server, the first step is to open the DHCP service object. The DHCP service object can usually be found in Navigation ➞ dhcp. A DHCP server object can now be created in the DHCP service object. ’General’ tab Server name (*) The computer name which will offer the DHCP service should be entered in this input field. Attention: A server cannot be entered in more than one DHCP service at the same time. Attention: If several DHCP servers are entered in the same DHCP service, the DHCP failover mechanism must be activated to be able to assign variable IP addresses. 103
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Univention Corporate Server Manual
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Contents 1 Introduction 11 1.1 What
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Contents 5.3.12 Reboot . . . . . .
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Contents 10.7.2 Hardware drivers /
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Contents 14.11Including additional
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1 Introduction Contents 1.1 What is
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1.3 Further documentation selective
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2 Domain concept Contents 2.1 Intro
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2.2 UCS system roles The DC backup
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2.4 Joining domains 2.4 Joining dom
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2.4.2 How to join domains with Wind
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2.4 Joining domains If the computer
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3 Installation Contents 3.1 Introdu
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continued. 3.2 Text-based Installat
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g) Base system Attention: 3.2 Text-
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Figure 3.3: Partitioning hard drive
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3.2 Text-based Installation as the
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Figure 3.5: Selection of components
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17. System settings 3.2 Text-based
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3.4 Installing and Renewing Licence
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4 Univention Directory Manager Cont
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Figure 4.1: Unsecured start page 4.
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Figure 4.3: Automatic log-out after
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4.3 Univention Directory Manager Wi
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last names of the users, a column w
Page 51 and 52: 4.4 Navigation in LDAP By clicking
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Page 55 and 56: ’User account’ tab Account expi
Page 57 and 58: Attention: 4.5 Univention Directory
Page 59 and 60: Further information can be found in
Page 61 and 62: ’Groups’ tab 4.5 Univention Dir
Page 63 and 64: the user is disconnected after auth
Page 65 and 66: Mail address 4.5 Univention Directo
Page 67 and 68: DNS Entry 4.5 Univention Directory
Page 69 and 70: ’General’ tab Name (*) 4.5 Univ
Page 71 and 72: Reverse zone for DNS entry 4.5 Univ
Page 73 and 74: ’Deployment’ tab 4.5 Univention
Page 77 and 78: Browseable 4.5 Univention Directory
Page 79 and 80: Valid users 4.5 Univention Director
Page 83 and 84: Clients can send a lock request wit
Page 85 and 86: Subtree checking 4.5 Univention Dir
Page 87 and 88: Disconnect Time 4.5 Univention Dire
Page 89 and 90: Manufacturer 4.5 Univention Directo
Page 93 and 94: ’Samba’ tab 4.5 Univention Dire
Page 97 and 98: ’Alias’ tab Canonical name (*)
Page 101: server. Attention: 4.5 Univention D
Page 105 and 106: Last address 4.5 Univention Directo
Page 107 and 108: 4.5.10.5 DHCP host 4.5 Univention D
Page 109 and 110: 4.5.11.1 Adding a policy 4.5 Univen
Page 115 and 116: Declines 4.5 Univention Directory M
Page 117 and 118: ’[DHCP NetBIOS]’ tab NetBIOS na
Page 121 and 122: RAM on the graphics adapter in kb 4
Page 123 and 124: System shutdown 4.5 Univention Dire
Page 125 and 126: ’[Print quota]’ tab Attention:
Page 135 and 136: The DNs of the predefined container
Page 137 and 138: ’General’ tab Name (*) The name
Page 139 and 140: Tab name 4.5 Univention Directory M
Page 141 and 142: Displayed attributes 4.5 Univention
Page 145 and 146: Data type Syntax 4.5 Univention Dir
Page 147 and 148: • Wizards 4.6 Policy-controlled L
Page 149 and 150: 4.6 Policy-controlled Layouts for t
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5 Univention Management Console Con
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Figure 5.1: Login mask of Univentio
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5.3.2 Kernel modules 5.3 Standard m
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Figure 5.4: Univention Configuratio
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Figure 5.6: List of partitions 5.3
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5.3.10 Joining a domain Figure 5.8:
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5.3.13 Online update Figure 5.10: R
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Figure 5.13: Online update: compone
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6 Univention Virtual Machine Manage
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6.3 Managing virtual machines with
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6.3.2 Modifying virtual machines Fi
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6.3.2.2 Operations (Starting/stoppi
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7 UCS Directory service Contents 7.
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tions. 7.4 Configuration of LDAP AC
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- Using a concrete DN via dn.base,
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8 Services for Windows Contents 8.1
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8.2.3 Print server 8.3 Building Sam
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8.4 Extended Configuration When set
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8.4 Extended Configuration auth/use
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8.4.2 WINS 8.4 Extended Configurati
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8.4 Extended Configuration System p
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8.4.5.4 Profile directory 8.4 Exten
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8.4 Extended Configuration This nam
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9 Desktop systems Contents 9.1 Intr
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9.2.3 Mobile clients 9.3 Managing d
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9.3.4 NX 9.4 VNC desktop sharing Li
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9.5 Thin client environment are not
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9.5 Thin client environment If thin
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9.5 Thin client environment If ESD
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9.6 Home directories computer on wh
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9.7.1 Creating and modifying global
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Figure 9.1: Univention Directory Ma
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10 Basic System Services Contents 1
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10.3 Packet filter with Univention
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10.3.5 Testing Univention Firewall
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sudo tool for running users with el
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10.6 Logging of system messages and
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10.8 GRUB boot manager The GRUB boo
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10.9.3 Defining cron jobs in Univen
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10.12 SSH In the basic setting, a r
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11 Software maintenance Contents 11
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11.2 UCS updates system version whi
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11.3.1 Assigning repository servers
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11.3 Package maintenance repository
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Figure 11.2: Package list client 11
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11.3.6.4 Information about installe
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11.5 Repository management a reposi
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univention-repository-merge --dest
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example, synchronisation as of UCS
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12 Mail Contents 12.1 Introduction
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12.3 Setting up the mail server To
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12.3 Setting up the mail server ent
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12.5 Virus filters can be changed i
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Field Value to be entered 12.6 Conf
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13 Print services Contents 13.1 Int
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13.2.3 Windows systems as print ser
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13.3 Configuring printer shares Onc
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13.5 Print quota 13.5 Print quota T
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13.5 Print quota entry is confirmed
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13.5 Print quota -G -pgroups pg1[,p
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14 Univention Configuration Registr
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sshd/permitroot: yes sshd/xforwardi
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14.5 Creating new Univention Config
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14.8 Regeneration of configuration
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14.10 Univention Configuration Regi
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closed with the string @!@. 14.12 I
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15 Univention System Setup Contents
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Figure 15.2: Basic settings in Univ
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Figure 15.4: Language settings in U
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15.2 Univention System Setup module
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15.2.6 Time zone Time zones can be
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15.5 Changing machine passwords/SSL
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16 Frequently asked questions Conte
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16.3 How does a user change his pas
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16.7 Thin clients experience log-in
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16.12 Avoiding double log-ins on Wi
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Bibliography [1] Univention. Overvi
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[26] Univention. Web proxies with U
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