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还有一点,就是服务器限制IP
1、在tcp协议中,禁止所有的ip访问本机的1521端口。
iptables -I INPUT -s 192.168.1.123 -p tcp –dport 1521 -j ACCEPT
iptables -I INPUT -p tcp –dport 1521 -j DROP
# Ubuntu/Debian
iptables-save > /etc/iptables.rules
# CentOS
iptables-save > /etc/sysconfig/iptables
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