ifconfig eth0:1 up 10.1.1.2

but i found out you can also do
ip addr add 10.1.1.2/24 dev eth0

HOWEVER and this is the gotcha if you use the second variant you CAN’T use ifconfig -a to see that added alias – you need to use ip addr list

Zeigt WLANs

sudo iwlist wlan0 scanning | grep -A 7 Cell

zeigt die IP Adresse:

ip addr show wlan0

zeigt alle Interfaces

ip addr

show routing table

ip route or route

change default geteway

ip route replace default via 192.168.0.5

nameserver ist in

/etc/resolv.conf

zeigt die laufenden Verbindungen

netstat -tulpan

ss state established '( dport = :80 )'

nethogs

sudo nethogs wlan0

Ports testen

nmap -T4 A testo.com