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Networking#

Test Commands#

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# IP Tests 5x
ping -c 5 192.168.77.7
ping -c 5 www.amazon.com

Get Informations#

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# Get the list of interfaces
ip a

# Getting routing information
route -n

# List All Open Ports
netstat -tulpn | grep LISTEN

# List All Active Port 22 in subnet
nmap -p22 192.168.25.0/24

# Scan (with ping) all ip in a subnet
nmap -sn 192.168.77.0/24

# Get ethernet card speed
cat /sys/class/net/<interface>/speed
nc example usage

DNS#

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# List DNS TXT entries
host -t txt o7conseils.com

#
dig CNAME o7conseils.com

Remote connection#

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# Log in remote shell
ssh user@192.168.99.101

Get File or Web Sites#

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# Get a file from a http address
wget

# Execute GET (or POST... see help)
curl [URL]

# GET web page with all the comm details
``` bash
# GET web page with all the communication details and hostname
curl -v --max-time 5 https://o7conseils.com

# GET web page with all the communication details, hostname, and a 5-second timeout
curl -v --header "Host: o7conseils.com" --max-time 5 https://o7conseils.com