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2
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2answers
769 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 ...
0
votes
2answers
2k 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
364 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
147 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 ...
0
votes
1answer
289 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 ...
1
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0answers
2k views

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 ...
1
vote
0answers
104 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 ...
1
vote
0answers
161 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
0answers
325 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 ...
0
votes
0answers
49 views

Enable Netflow plugin in Ntopng

How can I enable the Netflow plugin in the latest Ntopng (1.2.2). There is no 'Plugins' option in the menus or I can't see it. I have logged in the web interface at port 3000 but there is no Plugins ...
0
votes
0answers
39 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. ...