网上看到一个Linux防火墙规则示例,记录下来,以备查用
sbin/iptables -P INPUT DROP
/sbin/iptables -I INPUT -p tcp?dport 80 -j ACCEPT
/sbin/iptables -I INPUT -p tcp?dport 22 -j ACCEPT
/sbin/iptables -A INPUT -j DROP
/sbin/iptables -A INPUT -j LOG
/sbin/iptables -A FORWARD -p tcp?syn -m limit?limit 1/s -j ACCEPT
/sbin/iptables -A FORWARD -p tcp ?tcp-flags SYN,ACK,FIN,RST RST -m limit ?limit 1/s -j ACCEPT
/sbin/iptables -A FORWARD -p icmp?icmp-type echo-request -m limit?limit 1/s -j ACCEPT
/etc/init.d/iptables save /etc/init.d/iptables restart