Difference between revisions of "BASH Networking"
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ipinfo myip | ipinfo myip | ||
ipinfo 1.1.1.1 | ipinfo 1.1.1.1 | ||
+ | ipinfo www.bbc.co.uk | ||
== Add Dummy IP Address Using ip == | == Add Dummy IP Address Using ip == |
Latest revision as of 15:03, 9 September 2024
Install IPInfo CLI
sudo add-apt-repository ppa:ipinfo/ppa sudo apt update sudo apt install ipinfo ipinfo myip ipinfo 1.1.1.1 ipinfo www.bbc.co.uk
Add Dummy IP Address Using ip
sudo -i ip link add dev dummy1 type dummy ip link set dummy1 up ip addr add dev dummy1 192.0.2.10/32
View TCP and UDP Ports without Netstat
ss -aut
https://linux-audit.com/alternative-netstat-ss-tool/
Change the MAC Address of a Network Interface
sudo apt-get -y install macchanger
https://vitux.com/how-to-change-spoof-a-mac-address-in-ubuntu/
Delete ARP Cache
sudo ip -s -s neigh flush all
Thanks - https://askubuntu.com/questions/632837
Ping with Timestamp
Linux
ping -i1 -c20000 google.com | while read pong; do echo "$(date '+%Y-%m-%d-%H:%M:%S') $pong"; done
macOS
ping google.com | while read pong; do echo "$(date): $pong"; done
Speed Ping
alias ping='ping -c3 -n -i 0.2 -W1' alias pingg='ping www.google.co.uk' alias pingp='ping www.paully.co.uk'
Sort IP Addresses
arp | sort -t . -k 3,3n -k 4,4n
Thanks to Cyberciti.biz
Default Route Gateway - Change | Add | Delete
route del default gw 192.168.0.254 eth0 route add default gw 192.168.0.1 eth0
Ping At Specified Intervals
The following example sets a ping once a minute:
ping -i60 127.0.0.1
Thanks to Ubuntu Forums.
Blink Lights On Network Card
ethtool -p eth0 10
This will blink the lights for 10 seconds. However if you get this message...
Cannot identify NIC: Operation not supported
...you are out of luck because it only works with some chipsets and drivers:-
"-p initiates adapter-specific action intended to enable an operator to easily identify the adapter by sight. Typically this involves blinking one or more LEDs on the specific ethernet port."
ewrk3 s2io sky2 tg3 e100 pcnet32 bnx2 skge e1000 sk98lin ixgb
Thanks to Redhat, Linux Journal & Linux Toolkit.
Detect Ip Address Conflicts
Install the relevant software, for Debian/Ubuntu:
sudo apt-get install arp-scan
For CentOS, Fedora or Redhat:
sudo yum install arp-scan
Once installed to use:
sudo arp-scan -I eth0 -l
This should return something similar to:
Interface: eth0, datalink type: EN10MB (Ethernet) Starting arp-scan 1.8.1 with 256 hosts (http://www.nta-monitor.com/tools/arp-scan/) 192.168.0.1 1c:c1:de:1c:74:8f Hewlett Packard 192.168.0.21 00:1b:a9:8a:52:d2 BROTHER INDUSTRIES, LTD. 192.168.0.41 f4:ec:38:a8:d0:de TP-LINK TECHNOLOGIES CO., LTD. 192.168.0.52 00:1d:fe:df:2c:53 Palm, Inc 192.168.0.86 00:1d:fe:e9:1a:ca Palm, Inc
IPCONFIG
https://www.computerhope.com/unix/uifconfi.htm
Use Conntrack To Block An Ip Address
conntrack -L -s {IP-ADDRESS} conntrack -D -s {IP-ADDRESS}