Connaître les adresses IP de son réseau

Posted onAuthorPierre-Jean MARQUET

Les IP autour de nous en quelques commandes

  • installer les outils reseaux : ifconfig, iwconfig, nmap..)
# apt-get install net-tools nmap

Lister les machines de son réseau :

# nmap -sn 192.168.0.0/24

Starting Nmap 7.40 ( https://nmap.org ) at 2017-12-07 10:49 CET
Nmap scan report for 192.168.0.106
Host is up (0.00022s latency).
MAC Address: C0:3Fxxxx (Elitegroup Computer Systems)
Nmap scan report for 192.168.0.150
Host is up (-0.092s latency).
MAC Address: F4:CAxxxx (Freebox SAS)
Nmap scan report for 192.168.0.254
Host is up (0.00060s latency).
MAC Address: F4:CAxxxx (Freebox SAS)
Nmap scan report for 192.168.0.73
Host is up.
Nmap scan report for 192.168.0.123
Host is up.
Nmap done: 256 IP addresses (5 hosts up) scanned in 3.83 seconds

Lister les adresses IP de notre machine ?

# ifconfig     (réseau LAN Ethernet)


enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
 inet 192.168.0.73 netmask 255.255.255.0 broadcast 192.168.0.255
 inet6 fe80::72c0:8a17:6788:ea07 prefixlen 64 scopeid 0x20<link>
 inet6 2a01:e35:2e4e:60d0:8aeb:89b3:b2b0:b669 prefixlen 64 scopeid 0x0<global>
 ether 00:24:e8:d0:3b:95 txqueuelen 1000 (Ethernet)
# iwconfig    (réseau WLAN sans fil)

enp0s25 no wireless extensions.

wlp12s0 IEEE 802.11 ESSID:"FreeDom2013" 
 Mode:Managed Frequency:2.432 GHz Access Point: F4:C...