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Contents
Contents
Contents
Introduction
Insecure out of the box
Security through obscurity doesn't work
Secure your computer before connecting it to the Internet
Install the latest version of the OS
Apply operating system patches
Practical changes to improve security
Internet services
The
inetd
daemon
Disabling inetd
Disabling services controlled by inetd
xinetd
Check active ports
TCP Wrappers
Example
/etc/inetd.conf
for TCP Wrappers
Example
/etc/hosts.deny
Getting TCP Wrappers
Telnet and FTP
Anonymous FTP
FTP configuration file:
/etc/ftpusers
Secure Shell
Packet filtering
Linux
FreeBSD
System configuration file:
/etc/rc.conf
Firewall configuration file:
/etc/rc.firewall
Tru64 UNIX
Interface configuration file:
/etc/ifaccess.conf
Intrusion detection
Handy checklists
Resources on the Internet
Security advisory and software bulletin sites
*NIX distribution security links
Security tools
About this document ...
Physics IT Support 2003-09-16