Rastreando os ips visíveis aos dispositivos de rede

• Rastreamento Geral

for i in $(ip route | grep -v default | awk '{print $1 "-" $3}'); \
do \
nmap -sP $(echo $i | cut -d \- -f 1) | grep 'Nmap scan' | awk '{print "\033[32m" $5 "\033[39m"}'; \
done | sort | uniq

• Rastreamento por interface

for i in $(ip route | grep -v default | awk '{print $1 "-" $3}'); \
do \
echo "============================="; \
echo "Rastreando a rede $(echo $i | cut -d \- -f 2)"; \
nmap -sP $(echo $i | cut -d \- -f 1) | grep 'Nmap scan' | awk '{print "\033[32m" $5 "\033[39m"}'; \
done;

• Rastramento por interface com portas

for i in $(ip route | grep -v default | awk '{print $1 "-" $3}'); \
do echo "============================="; \
echo "Rastreando a rede $(echo $i | cut -d \- -f 2)"; \
nmap $(echo $i | cut -d \- -f 1) | egrep -v 'Not shown' | \
awk '{if ($0 ~ /PORT/) print "\033[33m" $0 "\033[39m"; \
else if ($2 ~ /open/) print "\033[32m" $0 "\033[39m"; \
else if($2 ~ /closed/) print "\033[31m" $0 "\033[39m"; \
else print $0}'; \
done;

Monitoramento de pacotes

sudo tcpdump -w test.pcap -i eth1 tcp port 6881 or udp \( 33210 or 33220 \)

fonte: http://linux.byexamples.com/archives/283/simple-usage-of-tcpdump/

Habilitar e desabilitar icmp no windows server

Go to Start >> Administrative Tools >> Windows Firewall with advanced security >> Inbound Rules >> File and Printer Sharing (Echo Request - ICMPv4-IN) >> right click and select Enable Rule. 

fonte:

http://www.dotnetfunda.com/codes/code501-how-to-enable-or-disable-ping-in-windows-server-2008-r2-server.aspx