Security aspects of a CentOS 6.5 running a website

HI Experts

We have configured a VPS (CentOS 6.5) with a public IP, we setup a web server and we have opened 80 port to test it but we are concerned about security aspects, could you bring a checklist about what we should take care of?

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Jan SpringerCommented:
Restrict sensitive areas by IP address and authentication using either .htaccess or in the httpd.conf.

Install modsecurity and modevasive.

Restrict (where possible), POST and PUT commands.

Disable any status information.

Disable directory listing.

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dimensionavAuthor Commented:
Jan, a couple of questions:

when you say "Restrict (where possible), POST and PUT commands" are you meaning that we shoud do this from PHP application? and what means "Disable any status information" ?

Thank you very much!
You can read some security guidance here:
You did well keeping firewall
Normally you leave selinux at full power and check violations (audit2allow/audit2why/setsebool etc)
And log apache error log to remote syslog server
Adding small piece at a time to default config will keep you safe from internet and own mistakes.
You need to upgrade to 6.6 NOW, and invent practice of not skipping security patches for future.
Did somebody say backup?
Jan SpringerCommented:
  #Extended status on (commented out it's off by default)
  Extended status off

And within each web root:

   <Limit PUT OPTIONS>
       Order deny,allow
       Deny from all

If you don't have an app that needs to POST, include that, as well.

Also, remove any modules that you will not need and especially remove the any proxy modules.
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