> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/pt-br/hacking-wifi/wpa-wpa2-psk-network-attacks/evil-twin/eviltwin-iptables-rules-and-network-interfaces.md).
# EvilTwin - Regras de iptables e Interfaces de Rede
Configure a interface de rede e as regras de iptables para o EvilTwin.
## Regras do iptables e interfaces de rede
Inicie o Airbase para criar o ponto de acesso.
### Crie o `at0` Interface
Crie a interface de rede para o ponto de acesso:
{% code overflow="wrap" %}
```bash
sudo ip tuntap add dev at0 mode tap
sudo ip link set at0 up
sudo ip addr add 192.168.1.129/25 dev at0
```
{% endcode %}
### Adicionar a rota de rede
Adicione a rota para a nova sub-rede:
{% code overflow="wrap" %}
```bash
route add -net 192.168.1.128 netmask 255.255.255.128 gw 192.168.1.129
```
{% endcode %}
A configuração deve ficar assim:
### Ativar o encaminhamento de IP
Defina `ip_forward` para `1`:
{% code overflow="wrap" %}
```bash
echo 1 > /proc/sys/net/ipv4/ip_forward
```
{% endcode %}
### Limpar as regras do iptables
Limpe as regras existentes:
{% code overflow="wrap" %}
```bash
sudo iptables --flush
sudo iptables --table nat --flush
sudo iptables --delete-chain
sudo iptables --table nat --delete-chain
```
{% endcode %}
### Verificar as regras
Verifique as regras ativas:
{% code overflow="wrap" %}
```bash
iptables -S
iptables -L
```
{% endcode %}
### Configurar encaminhamento e NAT
Configure a interface externa para encaminhar tráfego para `at0`. Além disso, redirecione o tráfego HTTP:
{% code overflow="wrap" %}
```bash
iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE
iptables --append FORWARD --in-interface at0 -j ACCEPT
iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination $(hostname -I | awk '{print $1}'):80
iptables -t nat -A POSTROUTING -j MASQUERADE
```
{% endcode %}
---
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