Tips réseaux (brige et wireguard)

Second bridge

cat /etc/network/interface

auto vmbr1
iface vmbr1 inet static
  address 192.168.122.1
  netmask 255.255.255.0
  bridge_ports none
  bridge_stp off
  bridge_fd 0
  post-up echo 1 > /proc/sys/net/ipv4/ip_forward
  post-up   iptables -t nat -A POSTROUTING -s '192.168.122.0/24' -o vmbr0 -j MASQUERADE
  post-down iptables -t nat -D POSTROUTING -s '192.168.122.0/24' -o vmbr0  -j MASQUERADE

VPN Wireguard entre deux cluster (via un bridge)

LE BRIGE:

cat /etc/network/interface
auto vmbr2
iface vmbr2 inet static
  address 10.24.100.1/24
  netmask 255.255.255.0
  bridge_ports none
  bridge-stp off
  bridge-fd 0
  post-up echo 1 > /proc/sys/net/ipv4/ip_forward
  post-up   iptables -t nat -A POSTROUTING -s '10.24.100.0/24' -o wg0 -j MASQUERADE
  post-down iptables -t nat -D POSTROUTING -s '10.24.100.0/24' -o wg0  -j MASQUERADE

SERVER WIREGARD:

apt-get install wireguard wireguard-tools net-tools linux-headers-`uname -r`
cd /etc/wireguard/
umask 077; wg genkey | tee private.key | wg pubkey > public.key

fichier de conf:

cat /etc/wireguard/wg0.conf 

[Interface]
Address = 10.24.10.1/24
PostUp = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o vmbr0 -j MASQUERADE; ip6tables -A FORWARD -i wg0 -j ACCEPT; ip6tables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o vmbr0 -j MASQUERADE; ip6tables -D FORWARD -i wg0 -j ACCEPT; ip6tables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
ListenPort = 51194
PrivateKey = QGWisdgdsgd=====UJAAi/wjvqvW6IOX1Q= (clé privé server)

[Peer]
PublicKey = 7vBH7GjaIaKnqsfsqfqqsdfsq6T1YXw= (clé public client)
AllowedIPs = 10.24.10.0/24, 10.24.100.1/32
Endpoint = 86.234.21.192:52443