iptables (firewall)
./firewall
Categoria: Segurança
Software: iptables
[ Hits: 9.466 ]
Por: Antonio Thomacelli
Firewall caseiro, para bloquear tudo ótimo para quem só usa internet
#! /bin/bash ########################### # TITULO ABRE # echo "Iniciando FIREWALL" ########################### ###################### #Zera todas as Regras# ###################### echo "Regras Zeras" iptables -F ######################################## # Bloqueia tudo, nada entra e nada sai # ######################################## echo "Fechando tudo..." iptables -P INPUT DROP iptables -P FORWARD DROP iptables -P OUTPUT DROP ################################### # Libera conexoes estabelecidas # ################################### echo "Liberando conexoes..." iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACC EPT iptables -A FORWARD -m state --state RELATED,ESTABLISHED,NEW -j ACCEPT iptables -A OUTPUT -m state --state RELATED,ESTABLISHED,NEW -j ACCEPT iptables -A INPUT -i lo -j ACCEPT ################### # COMPARTILHAMENTO# ################### # # iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE # ########################### # TITULO FECHA # echo "FIREWALL CONCLUIDO" ###########################
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