Dear all
Could someone help me to identify the difference between
the following 3 rules.
1. iptables -t mangle -A PREROUTING -p tcp ! --syn -m state --state
INVALID -j DROP
2. iptables -A INPUT -p tcp ! --syn -m state --state INVALID -j DROP
3. iptables -A INPUP -p tcp ! --syn -m conntrack --cstate INVALID -j DROP
Many thanks
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