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Cover Your Assets, Web Style: Page 8 of 10

Sun Microsystems patches

Microsoft TechNet Security

Linux distribution patches

Now check your firewall as well. Many popular firewalls are software implementations deployed on an operating system with known exploits and vulnerabilities. Don't forget to double check this first line of defense.

The next thing you need to do is turn off extraneous services that may be running on your servers. Plenty of tools are available to provide you with a list of services that are accessible on your servers, so get one and run it against the servers that make up your Web infrastructure: