Re: [CentOS-pt-br] Digest CentOS-pt-br, volume 114, assunto 2 - discuss-pt-br

8 Sep 2016


      Coloquei a regra conforme abaixo e estou recebendo as mensagens de erro logo a seguir.
#### Regras para liberar o programa SPI ### inicio... 
$IPT -t filter -I FORWARD -d 177.135.260.61 -p tcp -m multiport --dport 3051,5836,5837,725 -j ACCEPT 
$IPT -t filter -I FORWARD -d 177.135.260.61 -p udp -m multiport --dport 3051,5836,5837,725 -j ACCEPT 
#### Regras para liberar o programa SPI ### final...
[root@proxy ~]# /etc/rc.d/init.d/firewall.sh 
INICIANDO FIREWALL ...................[OK] 
LIMPANDO AS REGRAS ...................[OK] 
APLICADO REGRAS PADRÕES ..............[OK] 
APLICANDO REGRAS MANUAIS .............[OK] 
iptables v1.4.7: host/network `177.135.260.61' not found 
Try `iptables -h' or 'iptables --help' for more information. 
iptables v1.4.7: host/network `177.135.260.61' not found 
Try `iptables -h' or 'iptables --help' for more information. 
FIREWALL INICIADO ....................[OK]
Coloquei as linhas de regras antes das linhas descritas abaixo.
$IPT -t filter -A FORWARD -m state --state INVALID,RELATED,ESTABLISHED -j ACCEPT 
$IPT -t filter -A FORWARD -j LOG $LOG_OPTIONS --log-prefix "LOG_FORWARD" 
$IPT -t filter -A FORWARD -j DROP
De: centos-pt-br-request@centos.org 
Para: centos-pt-br@centos.org 
Enviadas: Quarta-feira, 7 de setembro de 2016 9:00:02 
Assunto: Digest CentOS-pt-br, volume 114, assunto 2
Enviar submissões para a lista de discussão CentOS-pt-br para 
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Para se cadastrar ou descadastrar via WWW, visite o endereço 
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ou, via email, envie uma mensagem com a palavra 'help' no assunto ou 
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Você poderá entrar em contato com a pessoa que gerencia a lista pelo 
endereço 
centos-pt-br-owner@centos.org
Quando responder, por favor edite sua linha Assunto assim ela será 
mais específica que "Re: Contents of CentOS-pt-br digest..."
Tópicos de Hoje:
1. Iptables! (Glenio Cortes Himmen) 
2. Assunto: Iptables! (Adroaldo Cavalheiro) 
3. Re: Iptables! (João Paulo Ferreira)
----------------------------------------------------------------------
Message: 1 
Date: Tue, 6 Sep 2016 14:03:25 -0300 (BRT) 
From: Glenio Cortes Himmen glenio.11622x@aparecida.go.gov.br 
To: CentOS-pt-br@centos.org 
Subject: [CentOS-pt-br] Iptables! 
Message-ID: 
1251459852.311112.1473181405819.JavaMail.zimbra@aparecida.go.gov.br 
Content-Type: text/plain; charset="utf-8"
Sou novo com IPTABLES e SQUID, preciso liberar um determinado programa para acessar o endereço e portas abaixo relacionados sem passar pelo proxy.
177.135.260.61:3051 
177.135.250.61:5836 
177.135.250.61:5837 
177.135.250.61:725
As requisições de saída sairão do IP 172.16.0.48/255.255.255.192.
Abaixo o script firewall.sh que utilizo.
#!/bin/bash 
#___________.__________________________ __ _____ .____ .____ 
#_ _____/| ______ _ _____/ \ / / _ \ | | | | 
# | __) | || _/| __)_\ // / /_\ | | | | 
# | \ | || | | \ / | \ |___| |___ 
# ___ / |___||____|_ /_______ / __/\ /____|__ /_______ _______ \ 
# / / / / / / / 
##################################################################### 
# VARIAVEIS 
##################################################################### 
# -d ip de destino - rede destino - ip da rede 192.168.2.1 192.168.0.0/24 
# -s ip de origem - rede de origem - ip da internet 
# --sport NUMERO porta origem 
# --dport NUMERO porta destino 
# -j ACAO 
LOG_OPTIONS="--log-tcp-sequence --log-ip-options --log-tcp-options --log-level info" 
IPT="/sbin/iptables" 
### INTERFACE DA REDE EXTERNA INTERNET 
IF_EXT="eth0"
### INTERFACE DA REDE INTERNA LAN 
IF_INT="eth1"
### REDE INTERNA 
REDE_INTERNA="172.16.0.0/26"
### PORTAS LIBERADAS TCP INPUT 
PORTAS_REDE_INTERNA="23 25 53 137 443 8080 1194 2928 3128 3389 80"
### PORTAS LIBERADAS UDP INPUT 
PORTAS_UDP="53 161 3128"
### Portas liberadas de fora internet para a rede interna 
PORTAS_FORWARD="23 25 53 443 8080 137 1194 2928 3389 3128"
# ======== FORWARD LIBERADO PARA IP EXTERNO 
IP_FORWARD_EXTERNO=" 
189.2.188.173 
187.5.111.45 
" 
### FORWARD LIBERADO PARA IP DA REDE INTERNA 
### Informar os IP's da rede interna que poderão passar sem configurar o proxy 
IP_FORWARD_INTERNO=" 
172.16.0.3 
172.16.0.7 
172.16.0.25 
172.16.0.11 
172.16.0.50 
172.16.0.47 
172.16.0.38 
172.16.0.61 
172.16.0.24 
172.16.0.10 
172.16.0.9 
172.16.0.49 
172.16.0.18 
172.16.0.15 
172.16.0.36 
172.16.0.51 
172.16.0.39 
172.16.0.45 
172.16.0.29 
172.16.0.36 
" 
echo "INICIANDO FIREWALL ...................[OK]" 
##################################################################### 
# MODULOS 
##################################################################### 
/sbin/modprobe ip_conntrack 
/sbin/modprobe ip_conntrack_ftp 
/sbin/modprobe ip_nat_ftp 
/sbin/modprobe iptable_nat 
/sbin/modprobe ipt_tos 
/sbin/modprobe ipt_MASQUERADE
echo "LIMPANDO AS REGRAS ...................[OK]" 
### APAGANDO REGRAS PADRAO 
$IPT -F 
$IPT -t nat -F 
$IPT -t mangle -F
### APAGANDO CHAINS 
$IPT -X 
$IPT -t nat -X 
$IPT -t mangle -X
### ZERANDO CONTADORES 
$IPT -Z 
$IPT -t nat -Z 
$IPT -t mangle -Z
echo "APLICADO REGRAS PADRÕES ..............[OK]" 
###################################################################### 
# REGRAS PADROES 
###################################################################### 
$IPT -P INPUT DROP 
$IPT -P FORWARD DROP 
$IPT -P OUTPUT ACCEPT
### HABILITANDO ROTEAMENTO NO KERNEL 
echo "1" > /proc/sys/net/ipv4/ip_forward
###################################################################### 
# REGRAS DE NAT 
###################################################################### 
### COMPARTILHAR INTERNET
#$IPT -t nat -A POSTROUTING -s $REDE_INTERNA -o $IF_EXT -j MASQUERADE 
$IPT -t nat -A POSTROUTING -o $IF_EXT -j MASQUERADE
#Redirecionar 443 para 3128 
#$IPT -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-ports 3128
### PROXY TRANSPARENTE 
#$IPT -t nat -A PREROUTING -i $IF_EXT -p tcp --dport 80 -j DNAT --to 10.1.1.1:3128 
#$IPT -t nat -A PREROUTING -i $IF_INT -p tcp --dport 80 -j REDIRECT --to-port 3128
### REDIRECIONAR ACESSO EXTERNO RDP PARA HOST INTERNO 
#$IPT -t nat -A PREROUTING -i $IF_EXT -p tcp --dport 3389 -j DNAT --to-destination 10.1.1.54:3389 
#$IPT -t filter -A FORWARD -i $IF_EXT -d 10.1.1.54 -p tcp --dport 3389 -j ACCEPT
echo "APLICANDO REGRAS MANUAIS .............[OK]" 
##################################################################### 
# REGRAS INPUT 
##################################################################### 
$IPT -t filter -A INPUT -p tcp -i lo -j ACCEPT 
$IPT -t filter -A INPUT -p icmp -j ACCEPT 
$IPT -t filter -A INPUT -p tcp --dport 443 -j DROP
for i in $PORTAS_REDE_INTERNA; do 
$IPT -t filter -A INPUT -p tcp --dport $i -j ACCEPT 
done
for i in $PORTAS_UDP; do 
$IPT -A INPUT -p udp --dport $i -j ACCEPT 
done
$IPT -t filter -A INPUT -m state --state INVALID,RELATED,ESTABLISHED -j ACCEPT 
$IPT -t filter -A INPUT -j LOG $LOG_OPTIONS --log-prefix "LOG_INPUT" 
$IPT -t filter -A INPUT -j DROP
##################################################################### 
# REGRAS DE FORWARD 
##################################################################### 
### PORTAS FORWARD 
for i in $PORTAS_FORWARD; do 
$IPT -A FORWARD -p tcp --dport $i -j ACCEPT 
done
### FORWARD EXTERNA INTERNET 
for i in $IP_FORWARD_EXTERNO; do 
$IPT -A FORWARD -d $i -j ACCEPT 
done
### FORWARD INTERNO INTERNT 
for i in $IP_FORWARD_INTERNO; do 
$IPT -A FORWARD -s $i -j ACCEPT 
done 
###
for i in $PORTAS_UDP; do 
$IPT -t filter -A FORWARD -p udp --dport $i -j ACCEPT 
done
$IPT -t filter -A FORWARD -m state --state INVALID,RELATED,ESTABLISHED -j ACCEPT 
$IPT -t filter -A FORWARD -j LOG $LOG_OPTIONS --log-prefix "LOG_FORWARD" 
$IPT -t filter -A FORWARD -j DROP
echo "FIREWALL INICIADO ....................[OK]"
Gostaria da ajuda para saber o comando e onde colocar. 
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------------------------------
Message: 2 
Date: Tue, 6 Sep 2016 22:33:01 +0000 (UTC) 
From: Adroaldo Cavalheiro adroaldo_goncalves@yahoo.com.br 
To: "Portuguese (Brazilian) CentOS mailing list" 
centos-pt-br@centos.org 
Subject: [CentOS-pt-br] Assunto: Iptables! 
Message-ID: 700822086.704018.1473201181100@mail.yahoo.com 
Content-Type: text/plain; charset="utf-8"
Tenta isso. 
iptables -A FORWARD -p tcp --dport 3051 -d 177.135.260.61 -j ACCEPTFaz o mesmo com as outras portas, é só repetir a regra. 
Tirei deste Post no Vivaolinux.
Enviado do Yahoo Mail no Android
Em 14:03 ter, 6 de set de PM, Glenio Cortes Himmenglenio.11622x@aparecida.go.gov.br escreveu: Sou novo com IPTABLES e SQUID, preciso liberar um determinado programa para acessar o endereço e portas abaixo relacionados sem passar pelo proxy.
177.135.260.61:3051 
177.135.250.61:5836 
177.135.250.61:5837 
177.135.250.61:725 
As requisições de saída sairão do IP 172.16.0.48/255.255.255.192.
Abaixo o script firewall.sh que utilizo.
#!/bin/bash 
#___________.__________________________ __ _____ .____ .____ 
#_ _____/| ______ _ _____/ \ / / _ \ | | | | 
# | __) | || _/| __)_\ // / /_\ | | | | 
# | \ | || | | \ / | \ |___| |___ 
# ___ / |___||____|_ /_______ / __/\ /____|__ /_______ _______ \ 
# / / / / / / / 
##################################################################### 
# VARIAVEIS 
##################################################################### 
# -d ip de destino - rede destino - ip da rede 192.168.2.1 192.168.0.0/24 
# -s ip de origem - rede de origem - ip da internet 
# --sport NUMERO porta origem 
# --dport NUMERO porta destino 
# -j ACAO 
LOG_OPTIONS="--log-tcp-sequence --log-ip-options --log-tcp-options --log-level info" 
IPT="/sbin/iptables" 
### INTERFACE DA REDE EXTERNA INTERNET 
IF_EXT="eth0"
### INTERFACE DA REDE INTERNA LAN 
IF_INT="eth1"
### REDE INTERNA 
REDE_INTERNA="172.16.0.0/26"
### PORTAS LIBERADAS TCP INPUT 
PORTAS_REDE_INTERNA="23 25 53 137 443 8080 1194 2928 3128 3389 80"
### PORTAS LIBERADAS UDP INPUT 
PORTAS_UDP="53 161 3128"
### Portas liberadas de fora internet para a rede interna 
PORTAS_FORWARD="23 25 53 443 8080 137 1194 2928 3389 3128"
# ======== FORWARD LIBERADO PARA IP EXTERNO 
IP_FORWARD_EXTERNO=" 
189.2.188.173 
187.5.111.45 
" 
### FORWARD LIBERADO PARA IP DA REDE INTERNA 
### Informar os IP's da rede interna que poderão passar sem configurar o proxy 
IP_FORWARD_INTERNO=" 
172.16.0.3 
172.16.0.7 
172.16.0.25 
172.16.0.11 
172.16.0.50 
172.16.0.47 
172.16.0.38 
172.16.0.61 
172.16.0.24 
172.16.0.10 
172.16.0.9 
172.16.0.49 
172.16.0.18 
172.16.0.15 
172.16.0.36 
172.16.0.51 
172.16.0.39 
172.16.0.45 
172.16.0.29 
172.16.0.36 
" 
echo "INICIANDO FIREWALL ...................[OK]" 
##################################################################### 
# MODULOS 
##################################################################### 
/sbin/modprobe ip_conntrack 
/sbin/modprobe ip_conntrack_ftp 
/sbin/modprobe ip_nat_ftp 
/sbin/modprobe iptable_nat 
/sbin/modprobe ipt_tos 
/sbin/modprobe ipt_MASQUERADE
echo "LIMPANDO AS REGRAS ...................[OK]" 
### APAGANDO REGRAS PADRAO 
$IPT -F 
$IPT -t nat -F 
$IPT -t mangle -F
### APAGANDO CHAINS 
$IPT -X 
$IPT -t nat -X 
$IPT -t mangle -X
### ZERANDO CONTADORES 
$IPT -Z 
$IPT -t nat -Z 
$IPT -t mangle -Z
echo "APLICADO REGRAS PADRÕES ..............[OK]" 
###################################################################### 
# REGRAS PADROES 
###################################################################### 
$IPT -P INPUT DROP 
$IPT -P FORWARD DROP 
$IPT -P OUTPUT ACCEPT
### HABILITANDO ROTEAMENTO NO KERNEL 
echo "1" > /proc/sys/net/ipv4/ip_forward
###################################################################### 
# REGRAS DE NAT 
###################################################################### 
### COMPARTILHAR INTERNET
#$IPT -t nat -A POSTROUTING -s $REDE_INTERNA -o $IF_EXT -j MASQUERADE 
$IPT -t nat -A POSTROUTING -o $IF_EXT -j MASQUERADE
#Redirecionar 443 para 3128 
#$IPT -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-ports 3128
### PROXY TRANSPARENTE 
#$IPT -t nat -A PREROUTING -i $IF_EXT -p tcp --dport 80 -j DNAT --to 10.1.1.1:3128 
#$IPT -t nat -A PREROUTING -i $IF_INT -p tcp --dport 80 -j REDIRECT --to-port 3128
### REDIRECIONAR ACESSO EXTERNO RDP PARA HOST INTERNO 
#$IPT -t nat -A PREROUTING -i $IF_EXT -p tcp --dport 3389 -j DNAT --to-destination 10.1.1.54:3389 
#$IPT -t filter -A FORWARD -i $IF_EXT -d 10.1.1.54 -p tcp --dport 3389 -j ACCEPT
echo "APLICANDO REGRAS MANUAIS .............[OK]" 
##################################################################### 
# REGRAS INPUT 
##################################################################### 
$IPT -t filter -A INPUT -p tcp -i lo -j ACCEPT 
$IPT -t filter -A INPUT -p icmp -j ACCEPT 
$IPT -t filter -A INPUT -p tcp --dport 443 -j DROP
for i in $PORTAS_REDE_INTERNA; do 
$IPT -t filter -A INPUT -p tcp --dport $i -j ACCEPT 
done
for i in $PORTAS_UDP; do 
$IPT -A INPUT -p udp --dport $i -j ACCEPT 
done
$IPT -t filter -A INPUT -m state --state INVALID,RELATED,ESTABLISHED -j ACCEPT 
$IPT -t filter -A INPUT -j LOG $LOG_OPTIONS --log-prefix "LOG_INPUT" 
$IPT -t filter -A INPUT -j DROP
##################################################################### 
# REGRAS DE FORWARD 
##################################################################### 
### PORTAS FORWARD 
for i in $PORTAS_FORWARD; do 
$IPT -A FORWARD -p tcp --dport $i -j ACCEPT 
done
### FORWARD EXTERNA INTERNET 
for i in $IP_FORWARD_EXTERNO; do 
$IPT -A FORWARD -d $i -j ACCEPT 
done
### FORWARD INTERNO INTERNT 
for i in $IP_FORWARD_INTERNO; do 
$IPT -A FORWARD -s $i -j ACCEPT 
done 
###
for i in $PORTAS_UDP; do 
$IPT -t filter -A FORWARD -p udp --dport $i -j ACCEPT 
done
$IPT -t filter -A FORWARD -m state --state INVALID,RELATED,ESTABLISHED -j ACCEPT 
$IPT -t filter -A FORWARD -j LOG $LOG_OPTIONS --log-prefix "LOG_FORWARD" 
$IPT -t filter -A FORWARD -j DROP
echo "FIREWALL INICIADO ....................[OK]"
Gostaria da ajuda para saber o comando e onde colocar.
-------------- Próxima Parte ---------- 
Um anexo em HTML foi limpo... 
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------------------------------
Message: 3 
Date: Tue, 6 Sep 2016 23:51:26 -0300 
From: João Paulo Ferreira jferreira.ba@gmail.com 
To: "Portuguese (Brazilian) CentOS mailing list" 
centos-pt-br@centos.org 
Subject: Re: [CentOS-pt-br] Iptables! 
Message-ID: 
CA+fqMVCoKcY0Ej+fz5py6wSuGcnghdU2AXdJ2GRihpW+OfDqYA@mail.gmail.com 
Content-Type: text/plain; charset="utf-8"
iptables -t filter -I FORWARD -d 177.135.260.61 -p tcp -m multiport --dport 
3051,5836,5837,725 -j ACCEPT 
iptables -t filter -I FORWARD -d 177.135.260.61 -p udp -m multiport --dport 
3051,5836,5837,725 -j ACCEPT
Como você não informou o protocolo da camada de transporte estou colocando 
a regra para UDP e TCP.
Atenciosamente,
*João Paulo Ferreira* 
*B.S. Ciência da Computação* - UNIVERSIDADE SALVADOR 
*Esp. Redes de Computadores e Telecomunicações* - UNIVERSIDADE SALVADOR 
*Novell Certified Linux Administrator* - NOVELL 
*Certified Linux Professional Institute *- LPI 
*CompTIA Linux+* - COMPTIA 
*Mikrotik Certified Network Associate* - MIKROTIK 
Cel.: +55 (71) 9918-1235 VIVO 
Cel.: +55 (71) 8837-7080 OI 
Skype.: joaopaulo.cf 
G-Talk/Mail: jferreira.ba@gmail.com
Em 6 de setembro de 2016 14:03, Glenio Cortes Himmen < 
glenio.11622x@aparecida.go.gov.br> escreveu:
...
Sou novo com IPTABLES e SQUID, preciso liberar um determinado programa 
para acessar o endereço e portas abaixo relacionados sem passar pelo proxy.
177.135.260.61:3051 
177.135.250.61:5836 
177.135.250.61:5837 
177.135.250.61:725
As requisições de saída sairão do IP 172.16.0.48/255.255.255.192.
Abaixo o script firewall.sh que utilizo.
#!/bin/bash 
#___________.__________________________ __ _____ .____ .____ 
#_ _____/| ______ _ _____/ \ / / _ \ | | | | 
# | __) | || _/| __)_\ // / /_\ | | | | 
# | \ | || | | \ / | \ |___| |___ 
# ___ / |___||____|_ /_______ / __/\ /____|__ /_______ _______ \ 
# / / / / / / / 
##################################################################### 
# VARIAVEIS 
##################################################################### 
# -d ip de destino - rede destino - ip da rede 192.168.2.1 
192.168.0.0/24 
# -s ip de origem - rede de origem - ip da internet 
# --sport NUMERO porta origem 
# --dport NUMERO porta destino 
# -j ACAO 
LOG_OPTIONS="--log-tcp-sequence --log-ip-options --log-tcp-options 
--log-level info" 
IPT="/sbin/iptables" 
### INTERFACE DA REDE EXTERNA INTERNET 
IF_EXT="eth0"
### INTERFACE DA REDE INTERNA LAN 
IF_INT="eth1"
### REDE INTERNA 
REDE_INTERNA="172.16.0.0/26"
### PORTAS LIBERADAS TCP INPUT 
PORTAS_REDE_INTERNA="23 25 53 137 443 8080 1194 2928 3128 3389 80"
### PORTAS LIBERADAS UDP INPUT 
PORTAS_UDP="53 161 3128"
### Portas liberadas de fora internet para a rede interna 
PORTAS_FORWARD="23 25 53 443 8080 137 1194 2928 3389 3128"
# ======== FORWARD LIBERADO PARA IP EXTERNO 
IP_FORWARD_EXTERNO=" 
189.2.188.173 
187.5.111.45 
" 
### FORWARD LIBERADO PARA IP DA REDE INTERNA 
### Informar os IP's da rede interna que poderão passar sem configurar o 
proxy 
IP_FORWARD_INTERNO=" 
172.16.0.3 
172.16.0.7 
172.16.0.25 
172.16.0.11 
172.16.0.50 
172.16.0.47 
172.16.0.38 
172.16.0.61 
172.16.0.24 
172.16.0.10 
172.16.0.9 
172.16.0.49 
172.16.0.18 
172.16.0.15 
172.16.0.36 
172.16.0.51 
172.16.0.39 
172.16.0.45 
172.16.0.29 
172.16.0.36 
" 
echo "INICIANDO FIREWALL ...................[OK]" 
##################################################################### 
# MODULOS 
##################################################################### 
/sbin/modprobe ip_conntrack 
/sbin/modprobe ip_conntrack_ftp 
/sbin/modprobe ip_nat_ftp 
/sbin/modprobe iptable_nat 
/sbin/modprobe ipt_tos 
/sbin/modprobe ipt_MASQUERADE
echo "LIMPANDO AS REGRAS ...................[OK]" 
### APAGANDO REGRAS PADRAO 
$IPT -F 
$IPT -t nat -F 
$IPT -t mangle -F
### APAGANDO CHAINS 
$IPT -X 
$IPT -t nat -X 
$IPT -t mangle -X
### ZERANDO CONTADORES 
$IPT -Z 
$IPT -t nat -Z 
$IPT -t mangle -Z
echo "APLICADO REGRAS PADRÕES ..............[OK]" 
###################################################################### 
# REGRAS PADROES 
###################################################################### 
$IPT -P INPUT DROP 
$IPT -P FORWARD DROP 
$IPT -P OUTPUT ACCEPT
### HABILITANDO ROTEAMENTO NO KERNEL 
echo "1" > /proc/sys/net/ipv4/ip_forward
###################################################################### 
# REGRAS DE NAT 
###################################################################### 
### COMPARTILHAR INTERNET
#$IPT -t nat -A POSTROUTING -s $REDE_INTERNA -o $IF_EXT -j MASQUERADE 
$IPT -t nat -A POSTROUTING -o $IF_EXT -j MASQUERADE
#Redirecionar 443 para 3128 
#$IPT -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-ports 3128
### PROXY TRANSPARENTE 
#$IPT -t nat -A PREROUTING -i $IF_EXT -p tcp --dport 80 -j DNAT --to 
10.1.1.1:3128 
#$IPT -t nat -A PREROUTING -i $IF_INT -p tcp --dport 80 -j REDIRECT 
--to-port 3128
### REDIRECIONAR ACESSO EXTERNO RDP PARA HOST INTERNO 
#$IPT -t nat -A PREROUTING -i $IF_EXT -p tcp --dport 3389 -j DNAT 
--to-destination 10.1.1.54:3389 
#$IPT -t filter -A FORWARD -i $IF_EXT -d 10.1.1.54 -p tcp --dport 3389 -j 
ACCEPT
echo "APLICANDO REGRAS MANUAIS .............[OK]" 
##################################################################### 
# REGRAS INPUT 
##################################################################### 
$IPT -t filter -A INPUT -p tcp -i lo -j ACCEPT 
$IPT -t filter -A INPUT -p icmp -j ACCEPT 
$IPT -t filter -A INPUT -p tcp --dport 443 -j DROP
for i in $PORTAS_REDE_INTERNA; do 
$IPT -t filter -A INPUT -p tcp --dport $i -j ACCEPT 
done
for i in $PORTAS_UDP; do 
$IPT -A INPUT -p udp --dport $i -j ACCEPT 
done
$IPT -t filter -A INPUT -m state --state INVALID,RELATED,ESTABLISHED -j 
ACCEPT 
$IPT -t filter -A INPUT -j LOG $LOG_OPTIONS --log-prefix "LOG_INPUT" 
$IPT -t filter -A INPUT -j DROP
##################################################################### 
# REGRAS DE FORWARD 
##################################################################### 
### PORTAS FORWARD 
for i in $PORTAS_FORWARD; do 
$IPT -A FORWARD -p tcp --dport $i -j ACCEPT 
done
### FORWARD EXTERNA INTERNET 
for i in $IP_FORWARD_EXTERNO; do 
$IPT -A FORWARD -d $i -j ACCEPT 
done
### FORWARD INTERNO INTERNT 
for i in $IP_FORWARD_INTERNO; do 
$IPT -A FORWARD -s $i -j ACCEPT 
done 
###
for i in $PORTAS_UDP; do 
$IPT -t filter -A FORWARD -p udp --dport $i -j ACCEPT 
done
$IPT -t filter -A FORWARD -m state --state INVALID,RELATED,ESTABLISHED -j 
ACCEPT 
$IPT -t filter -A FORWARD -j LOG $LOG_OPTIONS --log-prefix "LOG_FORWARD" 
$IPT -t filter -A FORWARD -j DROP
echo "FIREWALL INICIADO ....................[OK]"
Gostaria da ajuda para saber o comando e onde colocar.

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