/sbin/iptables -A INPUT -s 192.168.20.0/22 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.10.0/23 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.74.0/24 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.144 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.145 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.210 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.211 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.215 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.216 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -s 192.168.239.138 -i eth0 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport "1521" -j DROP
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