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68 Start-Up 2.9.2 Group Management To create and edit groups, select Security and Users → Group Management or click Groups in the user administration module. Both dialogs have the same functionality, allowing you to create, edit, or delete groups. The module gives an overview of all groups. As in the user management dialog, change filter settings by clicking Set Filter. To add a group, click Add and fill in the appropriate data. Select group members from the list by checking the corresponding box. Click Accept to create the group. To edit a group, select the group to edit from the list and click Edit. Make all necessary changes then save them with Accept. To delete a group, simply select it from the list and click Delete. Click Expert Options for advanced group management. Find more about these options in Section 2.9.1, “User Management” (page 67). 2.9.3 Local Security To apply a set of security settings to your entire system, use Security and Users → Local Security. These settings include security for booting, login, passwords, user creation, and file permissions. SUSE Linux offers three preconfigured security sets: Home Workstation, Networked Workstation, and Networked Server. Modify the defaults with Details. To create your own scheme, use Custom Settings. The detailed or custom settings include: Password Settings To have new passwords checked by the system for security before they are accepted, click Check New Passwords and Test for Complicated Passwords. Set the minimum password length for newly created users. Define the period for which the password should be valid and how many days in advance an expiration alert should be issued when the user logs in to the text console. Boot Settings Set how the key combination Ctrl + Alt + Del should be interpreted by selecting the desired action. Normally, this combination, when entered in the text console, causes the system to reboot. Do not modify this setting unless your machine or
server is publicly accessible and you are afraid someone could carry out this action without authorization. If you select Stop, this key combination causes the system to shut down. With Ignore, this key combination is ignored. If you use the KDE login manager (KDM), set permissions for shutting down the system in Shutdown Behavior of KDM. Give permission to Only root (the system administrator), All Users, Nobody, or Local Users. If Nobody is selected, the system can only be shut down from the text console. Login Settings Typically, following a failed login attempt, there is a waiting period lasting a few seconds before another login is possible. This makes it more difficult for password sniffers to log in. Optionally activate Record Successful Login Attempts and Allow Remote Graphical Login. If you suspect someone is trying to discover your password, check the entries in the system log files in /var/log. To grant other users access to your graphical login screen over the network, enable Allow Remote Graphical Login. Because this access possibility represents a potential security risk, it is inactive by default. User Addition Every user has a numerical and an alphabetical user ID. The correlation between these is established using the file /etc/passwd and should be as unique as possible. Using the data in this screen, define the range of numbers assigned to the numerical part of the user ID when a new user is added. A minimum of 500 is suitable for users. Automatically generated system users start with 1000. Proceed in the same way with the group ID settings. Miscellaneous Settings To use predefined file permission settings, select Easy, Secure, or Paranoid. Easy should be sufficient for most users. The setting Paranoid is extremely restrictive and can serve as the basic level of operation for custom settings. If you select Paranoid, remember that some programs might not work correctly or even at all, because users no longer have permission to access certain files. Also set which user should launch the updatedb program, if installed. This program, which automatically runs on a daily basis or after booting, generates a database (locatedb) in which the location of each file on your computer is stored. If you select Nobody, any user can find only the paths in the database that can be seen by any other (unprivileged) user. If root is selected, all local files are indexed, because the user root, as superuser, may access all directories. Make sure that System Configuration with YaST 69
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SUSE Linux 10.1 April 07, 2006 Star
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Contents About This Guide vii Part
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6 Customizing Your KDE Desktop 165
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viii Start-Up SUSE Linux Reference
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Part I. Setup
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4 Start-Up 2 Reboot the system. 3 A
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6 Start-Up Use the function keys in
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8 Start-Up dows but does not provid
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10 Start-Up The partitions to creat
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12 Start-Up Figure 1.2 Possible Opt
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14 Start-Up The first bar graph sho
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16 Start-Up Other Filters Click the
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Page 30 and 31: 20 Start-Up 1.9.2 root Password roo
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Page 36 and 37: 26 Start-Up settings. LDAP client c
Page 38 and 39: 28 Start-Up AutoYaST is a system fo
Page 40 and 41: 30 Start-Up To start YaST in text m
Page 42 and 43: 32 Start-Up Figure 2.2 YaST Package
Page 44 and 45: 34 Start-Up NOTE Because language-s
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Page 48 and 49: 38 Start-Up Figure 2.3 Conflict Man
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Page 62 and 63: 52 Start-Up Standard Boot Floppy Us
Page 64 and 65: 54 Start-Up point of the hard disks
Page 66 and 67: 56 Start-Up If you partition manual
Page 68 and 69: 58 Start-Up To edit a PCI ID, selec
Page 70 and 71: 60 Start-Up Figure 2.5 Setting the
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Page 74 and 75: 64 Start-Up LDAP Client If using LD
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Page 82 and 83: 72 Start-Up /proc/iomem This displa
Page 84 and 85: 74 Start-Up Press Enter to start th
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Page 117 and 118: 3.3.1 File Commands The following s
Page 119 and 120: u g o User Group Others For access,
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Page 123 and 124: -t filesystem Specify the file syst
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H J K L Move one character to the l
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• A number of vim sources are ava
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124 Start-Up configuration of the s
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Figure 4.3 Generating a Search Inde
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128 Start-Up Another possibility to
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130 Start-Up 4.7 Package Documentat
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132 Start-Up concentrates on standa
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Part III. Desktop
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138 Start-Up boot. In this case, yo
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140 Start-Up main menu. Alter a sho
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142 Start-Up structure for accessin
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144 Start-Up Figure 5.3 Main Menu S
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146 Start-Up topmost directory is r
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148 Start-Up • Select the object
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150 Start-Up The group determines t
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152 Start-Up 4 Specify the folder t
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154 Start-Up where you want the tex
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156 Start-Up network passwords and
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158 Start-Up Figure 5.8 Ark: File A
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160 Start-Up Start KJobViewer from
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162 Start-Up filename for the image
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164 Start-Up To update system fonts
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166 Start-Up 5 Apply your changes a
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168 Start-Up In the Icons section,
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170 Start-Up shortcuts. For more in
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172 Start-Up The Country/Region & L
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174 Start-Up Login Manager configur
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176 Start-Up The program managing t
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178 Start-Up 7.2 Logging Out When y
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180 Start-Up To remove an icon from
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182 Start-Up The Places Menu The Pl
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184 Start-Up From the Desktop Doubl
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186 Start-Up Figure 7.4 Nautilus St
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188 Start-Up 3 Click Add to search
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190 Start-Up For a more in-depth in
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192 Start-Up Option Date Modified L
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194 Start-Up To open a file display
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196 Start-Up Left-click the panel i
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198 Start-Up account, open a file d
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200 Start-Up To add a new channel,
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202 Start-Up 8.1 Hardware Settings
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204 Start-Up 8.2.3 Configuring the
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206 Start-Up 8.3.1 Configuring Acce
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208 Start-Up 8.4.3 Managing Session
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Part IV. Troubleshooting
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214 Start-Up Log File /var/log/SaX.
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216 Start-Up 1. The program checks
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Procedure 9.2 Changing the Boot Seq
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220 Start-Up acpi=off This paramete
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222 Start-Up and port number under
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224 Start-Up 7 Once in the YaST Sys
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226 Start-Up • DNS is not working
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228 Start-Up 5 If graphical login s
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230 Start-Up 9.4.3 Login Successful
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232 Start-Up IMPORTANT If the user'
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234 Start-Up assume both server and
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236 Start-Up use traceroute fully_q
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238 Start-Up 9.6.2 Restoring a Syst
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240 Start-Up 1 Boot the system with
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242 Start-Up Clicking Next starts a
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244 Start-Up tion support for regis
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246 Start-Up • France: Phone: +33
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248 Start-Up We endeavor to help yo
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ping, 115 ps, 115 reboot, 117 rm, 1
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utilities, 195-200 grep, 112 groups
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S Samba clients, 66 servers, 66 SaX
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servers, 66 Samba clients, 26 scann
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