Novell SUSE LINUX Professional 9.3 Update 00662644461625 ユーザーズマニュアル
製品コード
00662644461625
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installed), and
other
(other patches available for update not relevant to any of
your installed packages). Security updates are marked in red and are preselected
along with the blue recommended patches. Accept this proposal to keep your
system consistent. Click ‘Accept’ to apply the updates. For more information
about the YaST Online Update, refer to the Administration Guide.
along with the blue recommended patches. Accept this proposal to keep your
system consistent. Click ‘Accept’ to apply the updates. For more information
about the YaST Online Update, refer to the Administration Guide.
1.8
Security
If converting to a Linux system from a Microsoft Windows system, you proba-
bly experienced a fair share of trouble caused by multiple kinds of viruses and
worms spreading over the Internet via e-mail. Now that you have made the
switch to Linux, you can at least put that fear aside, because these cannot harm
a Linux system as easily as a Windows system.
bly experienced a fair share of trouble caused by multiple kinds of viruses and
worms spreading over the Internet via e-mail. Now that you have made the
switch to Linux, you can at least put that fear aside, because these cannot harm
a Linux system as easily as a Windows system.
root
) and normal users.
root
has access to all system resources
and is allowed to change all aspects of the system’s configuration. Switching from
your normal user account to
your normal user account to
root
for administrative tasks and switching back
for your normal work sounds tedious and perhaps unnecessary because
root
has ultimate power over the system. Still, switching back to the normal user ac-
count after accomplishing the administrative jobs adds to security, because any
mistake made as
count after accomplishing the administrative jobs adds to security, because any
mistake made as
root
can have severe consequences. The whole system might
be affected, not just the normal user account. Thus, preserve your system’s in-
tegrity by clearly distinguishing between the different roles (“normal user” and
“superuser”).
tegrity by clearly distinguishing between the different roles (“normal user” and
“superuser”).
Keeping your system up to date by always applying the software updates pro-
vided by SUSE (see Section 1.7.2 on the preceding page) adds to the security of
your system. These updates fix possible exploits contained in the application
code.
vided by SUSE (see Section 1.7.2 on the preceding page) adds to the security of
your system. These updates fix possible exploits contained in the application
code.
Protect your system or your network against external “visitors” by running a fire-
wall. A preconfigured firewall is started on installation, providing maximum se-
curity to your network. If you need to add support for certain services and do
not maintain your system yourself, ask your system administrator to make the
necessary adjustments in the firewall settings. Otherwise read the chapter about
security in the Administration Guide and learn how to secure your network using
SuSEFirewall.
wall. A preconfigured firewall is started on installation, providing maximum se-
curity to your network. If you need to add support for certain services and do
not maintain your system yourself, ask your system administrator to make the
necessary adjustments in the firewall settings. Otherwise read the chapter about
security in the Administration Guide and learn how to secure your network using
SuSEFirewall.
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SUSE LINUX