cd /etc/yum.repos.d/
wget http://download.opensuse.org/repositories/isv:ownCloud:community/CentOS_CentOS-6/isv:ownCloud:community.repo
yum install owncloud

enalbe http

service httpd start
chkconfig httpd on

setup iptables

vim /etc/sysconfig/iptables

iptables configuration file

# Generated by iptables-save v1.4.7 on Sun Jun 29 15:58:20 2014
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [36:4972]
-A INPUT -i eth0 -p tcp -m tcp --dport 22 -m state --state NEW -m recent --update --seconds 180 --hitcount 4 --name DEFAULT --rsource -j DROP
-A INPUT -i eth0 -p tcp -m tcp --dport 22 -m state --state NEW -m recent --set --name DEFAULT --rsource
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
#-A INPUT -p udp -m state --state NEW -m udp --dport 137 -j ACCEPT 
#-A INPUT -p udp -m state --state NEW -m udp --dport 138 -j ACCEPT 
#-A INPUT -p tcp -m state --state NEW -m tcp --dport 139 -j ACCEPT 
-A INPUT -p tcp -m conntrack --ctstate NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
-A INPUT -p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -m state --state NEW -j DROP
-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,SYN,RST,PSH,ACK,URG -j DROP
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
# Completed on Sun Jun 29 15:58:20 2014

FIXME