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yum install mlocate

yum install diffutils.i386

yum -y install pcre-devel

yum install php-devel.i386

http://www.cyberciti.biz/tips/force-iptables-to-log-messages-to-a-different-log-file.html
According to man page:
Iptables is used to set up, maintain, and inspect the tables of IP packet filter rules in the Linux kernel. Several different tables may be defined. Each table contains a number of built-in chains and may also contain user defined chains.
By default, Iptables log message to a /var/log/messages file. However you can [...]