Plone 5.0.2 - installation issue

I have installed plone 5.0.2 on a ubuntu server 14.04 lts using the unified installer. I am not getting the site at http://188.166.231.51:8080 after bin/plonectl.

ssp@upvan:/opt/plone/zinstance$ sudo bin/plonectl fg
instance: 2016-03-24 16:26:13 INFO ZServer HTTP server started at Thu Mar 24 16:26:13 2016
Hostname: 0.0.0.0
Port: 8080
2016-03-24 16:26:13 INFO Zope Set effective user to "plone_daemon"
2016-03-24 16:26:16 WARNING ZODB.blob (1457) Blob dir /opt/plone/zinstance/var/blobstorage/ has insecure mode setting
2016-03-24 16:26:20 INFO Plone OpenID system packages not installed, OpenID support not available
2016-03-24 16:26:23 INFO Zope Ready to handle requests

Did you enable a firewall? Good. Nginx is reachable on :80 I suggest you set up a proxy from nginx into Plone.

I guess the issue may be with the 8080 port listening to python2.7. how do i resolve the issue. can i kill PID 1472.

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 1472/python2.7
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1040/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1011/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1150/master
tcp6 0 0 :::80 :::* LISTEN 1040/nginx
tcp6 0 0 :::22 :::* LISTEN 1011/sshd
tcp6 0 0 ::1:25 :::* LISTEN 1150/master

No! That is your Plone process listening on that port.