Enviado em 20/07/2015 - 10:28h
Bom dia amigos.me chamo alexandre e estou com um pequeno problema aki#!/bin/sh
caminho="/partition/bloquear/"
###############limpa os treco tudo
#rm -f ${caminho}ipsexo
##rm -f ${caminho}limpar_restricao
#vai ficar assim
#dig +short www.f****.com >> ${caminho}ipsexo
#enquanto le o arquivo executa a descoberta de ips
sort ${caminho}sexo | while read p; do
dig +short $p >> ${caminho}ipsexo
done
#remover linha iguais, copiando e colando em cima do mesmo arquivo
sort ${caminho}ipsexo | uniq >> ${caminho}tempipsexo ; rm -f ${caminho}ipsexo ; mv ${caminho}tempipsexo ${caminho}ipsexo
sed '/timed out/d' ${caminho}ipsexo >> ${caminho}tempipsexo ; rm -f ${caminho}ipsexo ; mv ${caminho}tempipsexo ${caminho}ipsexo
#verifica a existencia de regras anteriores e as deleta em FORWARD
iptables -t filter -L >> ${caminho}verifica
if grep -q "RESTRICAO" "${caminho}verifica"
then {
##########Apagar regras de redirecionar para a chain RESTRICAO
sort ${caminho}iplocalantigo | while read IPantigo; do
/usr/sbin/iptables -D FORWARD -p tcp -s $IPantigo --dport 20:79 -j RESTRICAO
/usr/sbin/iptables -D FORWARD -s $IPantigo -p tcp --dport 81:909 -j RESTRICAO
/usr/sbin/iptables -D FORWARD -s $IPantigo -p tcp --dport 914:8179 -j RESTRICAO
/usr/sbin/iptables -D FORWARD -s $IPantigo -p tcp --dport 8182:65535 -j RESTRICAO
done
#apagar cópia iplocalantigo
rm -f ${caminho}iplocalantigo
}
fi
if grep -q "RESTRICAO" "${caminho}verifica"
then {
###########Apagar Chain RESTRICAO
/usr/sbin/iptables -t filter -F RESTRICAO
/usr/sbin/iptables -t filter -X RESTRICAO
}
fi
###########Criar nova chain com nome RESTRICAO
/usr/sbin/iptables -t filter -N RESTRICAO
rm -f ${caminho}verifica
###########Politica padrão da chain RESTRICAO é accept
iptables -t filter -A RESTRICAO -s 0.0.0.0/0 -d 0.0.0.0/0 -j ACCEPT
iptables -t nat -I PREROUTING -s 192.168.0.2 -j ACCEPT
iptables -t nat -I POSTROUTING -s 192.168.0.2 -j MASQUERADE
iptables -I FORWARD -s 192.168.0.2 -j ACCEPT
iptables -t nat -I PREROUTING -s 192.168.0.10 -j ACCEPT
iptables -t nat -I POSTROUTING -s 192.168.0.10 -j MASQUERADE
iptables -I FORWARD -s 192.168.0.10 -j ACCEPT
iptables -t nat -I PREROUTING -s 192.168.0.11 -j ACCEPT
iptables -t nat -I POSTROUTING -s 192.168.0.11 -j MASQUERADE
iptables -I FORWARD -s 192.168.0.11 -j ACCEPT
iptables -t nat -I PREROUTING -s 192.168.0.12 -j ACCEPT
iptables -t nat -I POSTROUTING -s 192.168.0.12 -j MASQUERADE
iptables -I FORWARD -s 192.168.0.12 -j ACCEPT
iptables -t nat -I PREROUTING -s 192.168.0.21 -j ACCEPT
iptables -t nat -I POSTROUTING -s 192.168.0.21 -j MASQUERADE
iptables -I FORWARD -s 192.168.0.21 -j ACCEPT
iptables -t nat -I PREROUTING -s 192.168.0.22 -j ACCEPT
iptables -t nat -I POSTROUTING -s 192.168.0.22 -j MASQUERADE
iptables -I FORWARD -s 192.168.0.22 -j ACCEPT
iptables -A FORWARD -j DROPDNS
iptables -A FORWARD -m state --state INVALID -j DROP
iptables -A FORWARD -m state --state established,related -j ACCEPT
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
###########Destinos bloqueados da RESTRICAO
sort ${caminho}ipsexo | while read IP2; do
/usr/sbin/iptables -I RESTRICAO -d $IP2 -j REJECT
done
sort ${caminho}iplocal | while read IP; do
###########Redirecionar para a chain RESTRICAO, os ips locais
/usr/sbin/iptables -I FORWARD -p tcp -s $IP --dport 20:79 -j RESTRICAO >> ${caminho}FORWARD
/usr/sbin/iptables -I FORWARD -s $IP -p tcp --dport 81:909 -j RESTRICAO >> ${caminho}FORWARD
/usr/sbin/iptables -I FORWARD -s $IP -p tcp --dport 914:8179 -j RESTRICAO >> ${caminho}FORWARD
/usr/sbin/iptables -I FORWARD -s $IP -p tcp --dport 8182:65535 -j RESTRICAO >> ${caminho}FORWARD
done
#faz copia de segurança
cp ${caminho}iplocal ${caminho}iplocalantigo
yes dynamic network source internet,internet2 192.168.0.2 0.0.0.0 9 #Discard
yes dynamic network source internet,internet2 192.168.0.2.0.0.0 22 #SSH
yes dynamic network source internet,internet2 192.168.0.2 0.0.0.0 80 #WWW
yes dynamic network source internet,internet2 192.168.0.2 0.0.0.0 443 #HTTPS
yes dynamic network source internet,internet2 192.168.0.10 0.0.0.0 9 #Discard
yes dynamic network source internet,internet2 192.168.0.10.0.0.0 22 #SSH
yes dynamic network source internet,internet2 192.168.0.10 0.0.0.0 80 #WWW
yes dynamic network source internet,internet2 192.168.0.10 0.0.0.0 443 #HTTPS
yes dynamic network source internet,internet2 192.168.0.11 0.0.0.0 9 #Discard
yes dynamic network source internet,internet2 192.168.0.11.0.0.0 22 #SSH
yes dynamic network source internet,internet2 192.168.0.11 0.0.0.0 80 #WWW
yes dynamic network source internet,internet2 192.168.0.11 0.0.0.0 443 #HTTPS
yes dynamic network source internet,internet2 192.168.0.12 0.0.0.0 9 #Discard
yes dynamic network source internet,internet2 192.168.0.12.0.0.0 22 #SSH
yes dynamic network source internet,internet2 192.168.0.12 0.0.0.0 80 #WWW
yes dynamic network source internet,internet2 192.168.0.12 0.0.0.0 443 #HTTPS
yes dynamic network source internet,internet2 192.168.0.21 0.0.0.0 9 #Discard
yes dynamic network source internet,internet2 192.168.0.21.0.0.0 22 #SSH
yes dynamic network source internet,internet2 192.168.0.21 0.0.0.0 80 #WWW
yes dynamic network source internet,internet2 192.168.0.21 0.0.0.0 443 #HTTPS
yes dynamic network source internet,internet2 192.168.0.22 0.0.0.0 9 #Discard
yes dynamic network source internet,internet2 192.168.0.22.0.0.0 22 #SSH
yes dynamic network source internet,internet2 192.168.0.22 0.0.0.0 80 #WWW
yes dynamic network source internet,internet2 192.168.0.22 0.0.0.0 443 #HTTPS
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