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0
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0answers
24 views

nTop graphs available only if bandwidth is less than 1Gbit?

Maybe a stupid question, but I could not find the answer anywhere. My nTOP v.4.0.3 (64 bit) [x86_64-2.6.24-28-server-linux-gnu] 's graphs disappear when the total bandwidth usage goes beyond 1Gbit/s. ...
2
votes
2answers
76 views

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 ...
0
votes
0answers
55 views

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 ...
0
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1answer
147 views

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 ...
0
votes
1answer
999 views

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] HTTPS ...
-1
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2answers
176 views

why the dns related traffic is so huge, is my server being hacked?

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
votes
1answer
167 views

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 ...
0
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1answer
337 views

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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2answers
427 views

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 ...
1
vote
0answers
87 views

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 ...
0
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2answers
1k views

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 ...
1
vote
1answer
266 views

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
vote
1answer
381 views

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, ...
1
vote
1answer
317 views

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
vote
0answers
155 views

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
vote
1answer
128 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 ...
1
vote
0answers
304 views

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 ...
1
vote
1answer
802 views

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 ...
2
votes
1answer
876 views

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 ...
2
votes
3answers
517 views

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 ...
0
votes
1answer
1k views

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 ...
0
votes
1answer
740 views

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 ...
1
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3answers
2k views

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 ...
4
votes
3answers
633 views

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 ...
1
vote
1answer
3k views

NTOP vs NFSEN, which one?

I want to monitor Cisco's newflows. Which one of these tools do you recommend?
2
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2answers
627 views

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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3answers
2k views

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 ...
0
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1answer
2k views

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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3answers
1k views

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: ...
2
votes
2answers
987 views

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 ...
2
votes
5answers
2k views

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 ...
1
vote
4answers
3k views

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 ...