SE5 IdO sécurité des objets 2025/2026 b5

Serveur Virtuel :

Pour créer la VM : xen-create-image --hostname=SE5-crhanim --dhcp --dir=/usr/local/xen --size=20Gb --memory=2048mb  --dist=daedalus --bridge=bridgeStudents

Configuration réseau de la VM  :

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 172.26.145.108
        netmask 255.255.255.0
        gateway 172.26.145.251
        dsn-nameservers 172.26.145.251
# post-up ethtool -K eth0 tx off

#
# The commented out line above will disable TCP checksumming which
# might resolve problems for some users.  It is disabled by default
#

Vérification :

ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=113 time=5.72 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=113 time=5.72 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=113 time=6.27 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2004ms
rtt min/avg/max/mdev = 5.717/5.901/6.267/0.258 ms

Ajout d'une interface dans le VLAN 408 :

#VLAN 408
auto eth1
iface eth1 inet static
        address 172.16.8.0
        netmask 255.255.255.0
#
# The commented out line above will disable TCP checksumming which
# might resolve problems for some users.  It is disabled by default
#

ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:16:3e:d7:30:83 brd ff:ff:ff:ff:ff:ff
    inet 172.26.145.108/24 brd 172.26.145.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 2001:660:4401:6050:216:3eff:fed7:3083/64 scope global dynamic mngtmpaddr
       valid_lft 989sec preferred_lft 889sec
    inet6 2a01:c916:2047:c850:216:3eff:fed7:3083/64 scope global dynamic mngtmpaddr
       valid_lft 2591989sec preferred_lft 604789sec
    inet6 fe80::216:3eff:fed7:3083/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:16:3e:d7:30:84 brd ff:ff:ff:ff:ff:ff
    inet 172.16.8.0/24 brd 172.16.8.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::216:3eff:fed7:3084/64 scope link
       valid_lft forever preferred_lft forever

Sur Capbreton: etc/xen/SE5-crhanim.cfg

#
#  Networking
#
dhcp        = 'dhcp'
vif         = [ 'mac=00:16:3E:D7:30:83,bridge=bridgeStudents',
                'mac=00:16:3E:D7:30:84,bridge=g5_crhanim' ]

Sur /etc/network/interfaces.d/g5_crhanim Configuration de l'interface Vlan408 et bridge: g5_crhanim

auto Trunk.408
iface Trunk.408 inet manual
        vlan-raw-device Trunk
        up ip link set $IFACE up
        down ip link set $IFACE down

auto g5_crhanim
iface g5_crhanim inet manual
        bridge_ports Trunk.408
        up ip link set $IFACE up
        down ip link set $IFACE down