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FSI/VM_VPN_GATEWAY.sh
2026-04-21 19:52:57 +01:00

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#!/bin/bash
# Temos que configurar a VPN gateway (duh)
# O gateway client é o VM_ROAD_WARRIOR :)
#
# O gateway client é a pont entre a rede externa 193.136.212.0/24
# E a rede interna 10.60.0.0/24
# NOTE(vasco):
# Ao configurar a maquina virtual em si deixei a rede externa primeiro (enp0s8)
# E a rede interna como a segunda interface (enp0s9).
source VM_CONFIG.sh
# --- variaveis aqui pf joao fr fr fr aaaaa --- #
helloworld="print"
if_fora="enp0s8"
ip_fora="193.136.212.1"
if_dentro="enp0s9"
ip_dentro="10.60.0.3"
mega_tunel="tun0"
ip_mega_tunel="10.8.0.0/24"
# --- interfaces --- #
ifconfig $if_fora $ip_fora netmask 255.255.255.0
ifconfig $if_dentro $ip_dentro netmask 255.255.255.0
# --- ip forwarding --- #
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
sysctl -p /etc/sysctl.conf
# --- nat forwardin de vpn para clientes --- #
# ?????????????????????????????????????????????????????????????????????
iptables -I INPUT -i tun0 -j ACCEPT
iptables -I OUTPUT -o tun0 -j ACCEPT
echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/tun0/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/default/rp_filter
iptables -A INPUT -p udp --dport 1194 -j ACCEPT # :O
iptables -A FORWARD -i $mega_tunel -o $if_dentro -j ACCEPT # :P
iptables -A FORWARD -i $if_dentro -o $mega_tunel -j ACCEPT # ;)
iptables -A FORWARD -i $mega_tunel -o $if_fora -j ACCEPT # faltava isto ?
iptables -A FORWARD -i $if_fora -m state --state ESTABLISHED,RELATED -j ACCEPT # faltava isto ?
iptables -t nat -A POSTROUTING -s $ip_mega_tunel -o $if_fora -j MASQUERADE # :D
iptables-save > /etc/sysconfig/iptables # :3
# servidor
vpn_dir="/etc/openvpn/server"
cp ca/ta.key $vpn_dir
cp ca/ca.crt $vpn_dir
cp ca/vpn.key $vpn_dir
cp ca/vpn.crt $vpn_dir
cp vpn.conf $vpn_dir
openvpn --config "${vpn_dir}/vpn.conf"
# NOTA(vasco): o ficheiro conf vai ser vpn.conf pq isso é o nome do serviço
# o serviço nao funciona ????
# systemctl enable --now openvpn-server@vpn.service