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发表于 2008-12-6 09:22:41
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显示全部楼层
 
 
 
# Attention: To enable the commands below can cause some side effects 
# Syn-flood and DOS protection 
 iptables -A FORWARD -p tcp --syn -m limit --limit 1/s -j ACCEPT 
# Port Scanners protection 
 iptables -A FORWARD -p tcp --tcp-flags SYN,ACK,FIN,RST RST -m limit --limit 1/s -j ACCEPT 
  iptables -A FORWARD -p tcp --tcp-flags ALL SYN,ACK -j DROP 
# Ping-of-dead protection 
 iptables -A FORWARD -p icmp --icmp-type echo-request -m limit --limit 1/s -j ACCEPT 
 
# Speed UP DNS 
 iptables -t mangle -A OUTPUT -p udp --dport 53 -j TOS --set-tos 0x08 
 iptables -t mangle -A PREROUTING -p udp --dport 53 -j TOS --set-tos 0x10 
 
# Speed UP HTTP 
 iptables -t mangle -A OUTPUT -p tcp -j TOS --sport 80 --set-tos 0x08 
 iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TOS --set-tos 0x08 
iptables -t mangle -A OUTPUT -p tcp -j TOS --sport 80 --set-tos 0x10 |   
 
 
 
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