To import data, execute the command error:: Connection refuse

[googleman2014]

Dear Guy,
Your project is really cool and awesome,I'm very interested in it.Many thanks your great contribution.I follow your command to import data, but below error happened, please help on it.

root@debian:~/ELK-forensics# cat computername.mactime | nc -vv -n 127.0.0.1 18001
cat: computername.mactime: No such file or directory
(UNKNOWN) [127.0.0.1] 18001 (?) : Connection refused
sent 0, rcvd 0

root@debian:~/ELK-forensics# cat SG100-* | nc -vv -n 127.0.0.1 18002
cat: SG100-*: No such file or directory
(UNKNOWN) [127.0.0.1] 18002 (?) : Connection refused
sent 0, rcvd 0

[cvandeplas]

Are you sure your logstash is configured and running?
try a:

sudo netstat -nalp | fgrep "1800"

That should return lines stating that java is listening on these ports.