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Network Discovery (from linux)

dennis
in Tools

Featured Replies

Trying to discover hosts in a subnet from a linux box and here is what I came up with so far


 


Using a BASH script:



subnet=192.168.2.
addr=1
while [ $addr -lt 256 ]; do
ping -c 1 -t 1 $subnet$addr > /dev/null && echo Found $subnet$addr
let addr=addr+1
done

OR this script may work better



subnet=192.168.2.
for addr in `seq 1 1 255 `; do
( ping -c 1 -t 1 $subnet$addr > /dev/null && echo Found $subnet$addr ) &
done

OR even ping the broadcast address like this



ping -b 192.168.2.255

OR use arp-scan (if loaded)




sudo arp-scan -I eth0 192.168.2.0/24

OR utilize nmap (one of my favorite discovery tools)





nmap -v -sP 192.168.0.0/16 10.0.0.0/8


 

OR even another script



FOR /L %i IN (1,1,254) DO ping -n 1 10.254.254.%i | FIND /i “Reply”>> ipaddresses.txt


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