Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007, Installation Manual

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• Check your backups of user and system files regularly. Consider that if you do not
test whether the backup works, it might actually be worthless.
• Check your log files. Whenever possible, write a small script to search for suspicious
entries. Admittedly, this is not exactly a trivial task. In the end, only you can know
which entries are unusual and which are not.
• Use
tcp_wrapper
to restrict access to the individual services running on your
machine, so you have explicit control over which IP addresses can connect to a
service. For further information regarding
tcp_wrapper
, consult the manual
pages of tcpd and hosts_access (
man 8 tcpd
,
man hosts_access
).
• Use SuSEfirewall to enhance the security provided by tcpd (tcp_wrapper).
• Design your security measures to be redundant: a message seen twice is much
better than no message at all.
49.3 Using the Central Security
Reporting Address
If you discover a security-related problem (please check the available update packages
first), write an e-mail to
security@suse.de
. Please include a detailed description
of the problem and the version number of the package concerned. SUSE will try to send
a reply as soon as possible. You are encouraged to pgp encrypt your e-mail messages.
SUSE's pgp key is:
ID:3D25D3D9 1999-03-06 SUSE Security Team <security@suse.de>
Key fingerprint = 73 5F 2E 99 DF DB 94 C4 8F 5A A3 AE AF 22 F2 D5
This key is also available for download from
http://www.novell.com/linux/
security/securitysupport.html
.
Security and Confidentiality 891