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nbox/ntopng 1.2 on Ubuntu 14 & User Groups

Posted on 2014-09-25
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Last Modified: 2016-11-23
I have setup nbox/topng on Ubuntu 14 powered by a Dell PowerEdge 2950 using this package:  http://www.nmon.net/apt-stable/

I have two eth adapters, eth0 for management and eth1 for ntopng. Eth1 is plugged into a SPAN destination port on a Cisco 2940 switch with SPAN configured to source the port my router is attached to. It appears to be picking up flows properly.

My Questions:
1. What benefits are there to moving off of a SPAN design and over to a nProbe/Netflow design
2. How do I add non-admin users and/or groups in the ntopng portal, I only see the option to add admin level users.
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Question by:Lee Seeman
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4 Comments
 
LVL 22

Expert Comment

by:eeRoot
ID: 40347923
1) The monitor session will use a bit CPU & memory on the 2940.  If you are seeing high CPU/mem utilization, then you may need to remove the monitor session from the switch.  A hardware tap avoids this problem.

2) Can you create a group for users, then add users to that group?
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Author Comment

by:Lee Seeman
ID: 40352032
Switch CPU is averaging 30%, don't see this as an issue. Ubuntu server load is under 1%.

I don't see any option to create a group under the User management screen in ntopng (see attached). The plus sign button in the top right only offers an Add User option, no group or level of access options.
ntop.bmp
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Accepted Solution

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eeRoot earned 2000 total points
ID: 40361793
Apparently, Ntopng requires using the CLI to add users with specific group names by editing the file ntopng-users.conf.  See page 28 on this doc.

https://svn.ntop.org/svn/ntop/trunk/ntopng/doc/UserGuide.pdf

There does not appear to be any info on how to control what the different groups can access though.
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Author Closing Comment

by:Lee Seeman
ID: 40541120
thank you; we decided to just use NetFlow on PRTG instead.
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