Linux networking command (debian)

arp.sh

# Display all know device with hostname if it's know
arp

# Display all entry about revelant hostname or ip
arp -a hostname
arp -a ipaddr

dig.sh

# Get the ip address of URL
dig www.google.com

interfaces.sh

# Display networking information
ip a

# Clean interface addresses
ip addr flush eth0

# Bring up the interface
# (if the hotplug option is activate, ask for dhcp serveur)
ifup eth0

# Bring down the interface
# (if the interface is connected by dhcp lease, remove the dhcp lease)
ifdown eth0

# show routing table
ip route list

netstats.sh

# Display listening tcp port
netstat -tnlp

# Display listenig udp port
netstat -unlp

# Display Ipv4 only
netstat -utnlp4

nmap.sh

# Scan port to 1024
nmap 127.0.0.1

# Scan port range
nmap -p 0-65535

# Scan local network
nmap -T4 -sP 192.168.1.0/24

package.sh

apt-get install -y \
  net-tools \
  tcpdump \
  dnsutils \
  nmap

ping.sh

# Try to join specific ip
ping 8.8.8.8

# Check dns by ping with domaine name
ping www.google.com

# Flood with ping (run as administatoe only)
ping -f 127.0.0.1

# Ping one time
ping -c 1 8.8.8.8

route.sh

# Display the current route
route -n

# Adding routing rule
route add -net 192.168.2.0 gw 0.0.0.0 dev eth0

# Removing routing rule
route del -net 192.168.2.0 gw 0.0.0.0 dev eth0

tcpdump.sh

# Dump all trafic
tcpdump

# Dump all trafic except ssh port
tcpdump not port 22

# Dump trafic of specific interface
tcpdump -i eth0
tcpdump -i eth0 not port 22

# Dump specific ports
tcpdump port 80 and port 443
tcpdump port 53

# Dump arp traffic
tcpdump -i eth0 arp

# Set verbosity from 1 to 6
tcpdump -v
tcpdump -vvvvvv

# Display paquet content ascii
tcpdump -i eth0 -A

# Display pasquet content hex + ascii
tcpdump -i eth0 -X

# Store dump in file
tcpdump -w dump.pcap

traceroute,sh

# Traceroute to destination
traceroute 8.8.8.8