<code>
Betriebssystem
Layer 2: Ethernet, WLAN, ...
ARP
Layer 3: IPv4 IPv6
Layer 4: TCP, UDP

    Port
    IP Adresse
    Link-Speed
    Devicename
    MTU
    Verbindung
    MacAdresse
    ESSID
    Subnetz
    Host-zu-Host
    Neighbour Discovery
    Prozess-zu-Prozess
    Host-zu-Host
    Switch
    Router
    Treiber


    ethtool enp1s25
    ss -tua
    iw dev wlp2s0 scan
    ip addr add 172.27.0.5/16 dev enp1s25
    lspci -s 01:00.1 -k
    rfkill
    ls /sys/class/net
    lsof -ac sshd -i
    modinfo
    ip -s link show
    lsmod
    ip link set up dev wlp2s0
    sysctl
    ip neighbor
    modprobe
    dmesg
    udevadm
    modprobe -r
    ping -f -s 1472 172.27.0.1
    depmod -a
    ip route add default via 172.27.0.1
</code>