System Security Checklist for UNIX (NIH Only)
	BSDI
	Compaq (Digital Unix)
	http://www5.compaq.com/support/files/ http://www.service.digital.com/patches/
	FreeBSD
	ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/ Source: http://www.freebsd.org/security/
	HP HP-UX
	http://us-support.external.hp.com (choose individual patches, then log in or create new login ID) http://www.stanford.edu/group/itss-ccs/security/Bestuse/HPUX
	OpenBSD
	SCO (OpenServer and Unixware)
	http://www.sco.com/security/ (Security Bulletins and Patches) http://www.sco.com/support/ftplists/index.html (General OS patches) ftp://ftp.sco.com/SSE/
	Silicon Graphics (SGI)
	Primary SGI anonymous FTP site for security advisories and patches: ftp://patches.sgi.com/ (216.32.174.211) SGI Security Advisories: http://www.sgi.com/support/security/ and ftp://patches.sgi.com/support/free/security/advisories/ SGI Security Patches: http://www.sgi.com/support/security/ and ftp://patches.sgi.com/support/free/security/patches/ SGI Patches: ftp://ftp.sgi.com/patches/ IRIX: http://support.sgi.com/irix/index.html, http://support.sgi.com/irix/ and ftp://patches.sgi.com/ IRIX 5.2-6.4 recommended/required Patch Sets: http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset Linux: http://support.sgi.com/linux/index.html Source: http://support.sgi.com
	Sun Solaris
	http://sunsolve.sun.com (Recommended & Security Patches) http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/patch-license&nav;=pub-patches http://www.stanford.edu/group/itss-ccs/security/Bestuse/Solaris/solaris_patch.html
	Linux
	SANS Security Alert Consensus -- Linux Alerts Caldera http://www.caldera.com/support/security/ ftp://ftp.caldera.com/pub/OpenLinux/security/ Debian Mandrake http://www.linux-mandrake.com/en/security/ Source: http://www.linux-mandrake.com/en/fupdates.php3 Red Hat http://www.redhat.com/support/updates.html http://www.redhat.com/support/errata/ Slackware SuSe http://www.suse.com/support/download/updates/index.html http://www.suse.de/en/support/security/index.html

Windows Systems

	System Security Checklist for NT (NIH Only)
	Microsoft Windows Update
	Microsoft Security Notification Service (Subscribe by sending a blank e-mail to Microsoft_security-subscribe-request@announce.microsoft.com)
	Microsoft TechNet Security Bulletins

The SANS Security Alert Consensus is a weekly digest that includes the most recent security alerts for all the major platforms. You can customize the platform(s) for which you wish to receive information. The current list of platforms includes: AIX, BSD, HP UX, Linux, NetWare, SCO, SGI, Solaris, and Windows. There are also some more general categories such as Cross-Platform, Network Appliance, and Tool Announcements. You can also chose to receive the digest via e-mail.