Tema: iptables fw
Autorius: CodeC
Data: 2011-09-13 21:16:08
pasikuriau firewall su iptables. liko viena neispresta problema.
pastoviai atakuojamas 22 (ssh) portas.

vienas is sprendimu galetu buti toks:

iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT

iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW -m 
recent --set --name SSH
iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW -m 
recent --update --seconds 60 --hitcount 8 --rttl --name SSH -j DROP


taciau as naudoju DROP policy:

iptables -P INPUT DROP
iptables -P OUTPUT DROP
iptables -P FORWARD DROP

ir poto po viena atidarau ko man reikia. tokiu atveju rules'ai 22-am 
portui nebetenka prasmes. kaip ta pati (ar bent panasiai) realizuoti 
naudojant DROP policy?
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