Questions tagged [ntop]
The ntop tag has no usage guidance.
38
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Monitoring network output bandwidth of server for each IP address
I've got a network of static file serving servers. I use nginx to serve the files, and munin to monitor the network traffic. I want to know the output bandwidth of the server that goes to each IP ...
2
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2
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2k
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Problems with getting both ingress and egress Netflow data
I have a Cisco 6500 switch that I want to capture all vlan8 traffic incoming and outgoing. I talked with my networking group and they set me up with the following commands. (May not be exact commands ...
3
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2
answers
11k
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Howto prevent ntopng causing out of disk space and inodes?
I've been trying the ntopng software from http://www.ntop.org/get-started/download on a CentOS box at work to monitor what is happening on our network. The problem I'm having is that I can't find any ...
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1
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180
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Can I limit the scope of ntop to only monitor a specific connection?
I need to be able to track client data usage between their VM and an S3 compatible object storage bucket (accessed via https). I've installed ntopng community edition on the VM and right now it's ...
2
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3
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4k
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ntop vs nagios to Monitoring Networking traffic
Hi i need to monitor ntop to monitoring networking traffic but i am concern if its going to affect somehow my server performance.... i've been also recomend to use Nagios but i am not quite sure if is ...
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3
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2k
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Ntop monitoring - Hosts visible with no SPAN/mirroring
I am attempting to use ntop to monitor traffic over a Cisco Catalyst switch.
I was assuming that in order to see any of the traffic, I'd have to use monitor, as described here: http://www.cisco.com/en/...
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1
answer
3k
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How to restart ntopng systemd?
There used to be a file in the /etc/init.d/ folder to restart ntopng.
The command that I used to use is:
sudo /etc/init.d/ntopng restart
But now with Ubuntu 18.04, that file is gone.
How do ...
1
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0
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41
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How to analyze the latencies (application latency and rtt) of various applications in a citrix receiver?
Ntopng can identify the citrix flows but I am not able to see the information about the different applications running inside Citrix receiver.
I am using Ntopng on ubuntu 14.04.
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2
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Monitoring traffic using Netflow: port mirroring or streaming?
We have a router that we need to monitor using NetFlow. The router is very important, so we are not allowed to enable Netflow on the router itself. Instead, it will have port mirroring enabled so ...
0
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1
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411
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Trying to install Nbox on CentOS 7 throws dependency error for mod_auth_xradius. Installing the mod from source etc. does not work
I was trying to set up Ntop for testing purposes on a Virtualbox running CentOS 7.
When trying to run yum install nbox I get the following error:
--> Finished Dependency Resolution
Error: Package:...
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2
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5k
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ntop doesn't start - open of /var/lib/ntop/prefsCache.db failed: Can't be writer
I've installed ntop on centos 5.9 using yum.
But it doesn't start.
I'm getting this error:
Wed Mar 20 10:22:44 2013 **ERROR** ....open of /var/lib/ntop/prefsCache.db failed: Can't be writer
Wed Mar ...
7
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3
answers
4k
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Network Sniffing and Hubs
This will likely seem naive to the experts... but it has been on my mind lately.
For years I've been using ntop and a cheap 4 port hub to sniff client networks to determine who's doing what -- and ...
2
votes
1
answer
7k
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NTOP vs NFSEN, which one? [closed]
I want to monitor Cisco's newflows.
Which one of these tools do you recommend?
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150
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ntopng: How to view rsync traffic
I have ntopng installed. One of my machines is used to rsync data offsite. When I look at the machine in question, I don't see any traffic flows to the remote server, while I see all of its other ...
2
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2
answers
20k
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NTopng - Unable to start HTTP server on port 3000 - Can't login to web gui
I can access NTop via IP:3000 though the default login/pass doesn't go anywhere, just a refresh.
And when running "ntopng -v -G /var/run/ntopng.pid -i 1 -s" I get:
[HTTPserver.cpp:350] ...
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0
answers
6k
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ntopng: Host XXX.XXX.XXX.XXX is a flooder [NNN new flows in the last 3 sec]
I am exploring ntopng reports on my router and seeing, that one computer on my LAN is a flooder.
ntopng says Host XXX.XXX.XXX.XXX is a flooder [NNN new flows in the last 3 sec]
How to explore these ...
2
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2
answers
1k
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Method to log amount of transmitted data per each IP address in linux
I am looking for a method in linux to log the amount of data transmitted (received and sent separately) for every single IP address to which the data was sent to or received from. These statistics ...
1
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1
answer
944
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Undertstanding NTOP Mail_POP bandwidth data
I'm having some trouble understanding the output of Ntop.
I'm receiving high bandwidth warnings for one my (debian) servers from my network provider. Because the server runs only a few low traffic ...
-1
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2
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980
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why the dns related traffic is so huge, is my server being hacked? [closed]
I have a vps, and have several site on it, usually these sites are rarely being visited except myself, thus i am shocked by one fact that is i visit the vps provider's portal and find i have used a ...
0
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1
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854
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network gateway can't see traffic for monitoring
I've just setup a new CentOS 6.4 machine to act as a default gateway for the LAN at head office. It's primary task is simply to route traffic to the appropriate place, ie VPN servers or the firewall ...
1
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1
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3k
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ntop not reporting on all interfaces
I'm trying to setup ntop on our machine to see which traffic per IP address on our machine, our machines usually have a /28 allocation and this is configured correctly within CetnOS however ntop is ...
-1
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2
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754
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Is ntop's sflow support equivalent to netflow?
I've seen conflicting information from various dates and I'm having trouble determining if ntop supports sflow the same way it supports netflow or if it is somehow handicapped and not really worth ...
2
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0
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266
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How can I set ntop not to shorten host names?
With most screens in ntop, there is a list of hosts. Unfortunately, in almost every one, the host name is shorted, for some reason. When the host names follow the company standard, this results in the ...
3
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1
answer
1k
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nfsen per IP bandwidth and protocol usage graphs
I've been trying to use nTop for the past week and I've gotten a little fed up with the fact that it loses all the data that it's stored after a reboot.
Consequently, while looking for alternatives, ...
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1
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2k
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NTOP gives warnings on startup
I just installed ntop 1.4.4 and when I start it, it give me infinite warnings "packet truncated":
...
RRD_DEBUG: umask 0066
RRD_DEBUG: DirPerms 0700
THREADMGMT: RRD: Started thread (...
1
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1
answer
771
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nTop RRD file architecture
I have a gig of nTop RRD files and I would like to start graphing them with rrdtool (but not with nTop, since I'm hoping to do this with a separate backup of the database as workaround to the ...
1
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0
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245
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nTop Graphing Scripts
I would like to graph the RRD files that nTop creates, but I don't want to re-invent the wheel.
What I Know
There is an API for nTop that involves python. I have read the details of it yet.
I know ...
1
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1
answer
193
views
ntop make install error
when i install ntop, both ./autogen.sh & make done, but in "make install" give this error:
ln: `icmpPlugin.so': File exists
make[2]: *** [icmpPlugin.so] Error 1
make[2]: Leaving directory `/root/...
2
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1
answer
2k
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ntop to analyse bandwidth usage on multiple ASA 5505
I have set up a netflow server at our data centre, which is connected via VPN to ~40 remote offices using Cisco ASA 5505. The aim is to analyse usage data and find out exactly how the remote ...
1
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0
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462
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SFP port mirror on 5548 - not working
For the sake of monitoring my internet connection I have set up a port mirror on my Dell powerconnect 5548 from the SFP port to a 1Gb port on the switch, connected to my monitoring interface. The SFP ...
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1
answer
2k
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Alternative to Ntop on FreeBSD
ntop is a great tool for recording network throughput statistics for FreeBSD based firewalls. The statistics can be displayed as graphs using a web browser. Ntop, however, has the limitation that it ...
4
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3
answers
5k
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When ntop is restarted the ntop counter gets reset and all stats are gone
I am using Ntop 3.3-13 to collect statistical data about network usage.
When Ntop is restarted, all counters get reset and Ntop traffic stats page starts showing the output from the beginning.
How ...
2
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3
answers
2k
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ntop: Which HTTP downloads (URLs) caused the traffic?
My server causes too much traffic, so I have installed ntop to monitor it.
On the Summary -> Traffic page in the Global TCP/UDP Protocol Distribution table I can see the traffic is periodically ...
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1
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3k
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ntop and cacti: am I missing something?
I've used various commercial network monitoring products and have used ntop for a while for on-the-spot troubleshooting, but now I'd like to (hopefully) tie ntop's great real-time data with cacti's ...
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1
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2k
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Running ntop on virtual machine - viable?
Is anyone running ntop on a virtual machine reliably?
We would be monitoring a network as follows:
HQ (where ntop will be installed) with about 100 servers and 400 PCs
UK offices with about 100 PCs
...
2
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5
answers
3k
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ntop usage to monitor bandwidth
I'm attempting to monitor the bandwidth usage on our network. I've come across two products that seem to fulfil our needs. MRTG and nTop, however I'm unsure which to use.
My work is a small company ...
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4
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3k
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Problem installing ntop on FreeBSD 6.2
I'm following the instructions at http://www.ntop.org/download.html.
At some point during the ./configure phase of the install, I get this error message:
configure: error: Unable to find RRD at /usr/...
3
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2
answers
2k
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What are some decent competitors to ntop?
I've been trying to use ntop at my organization for a while and have had nothing but problems with it. The system I run it on is a fairly vanilla Redhat 5 system (Sun X4140) and ntop seems to run for ...