Run netstat -a or sockstat -l and make sure ntop has a process listening on 2055 or whatever udp port your routers are exporting to. You can also check the log file and see the details about the netflow plugin loading.
Also, run tcpdump or whatever and make certain the netflow data is actually reaching your ntop host. Lastly, "Network Flows" in nTop is NOT netflow. You must define Network Flows manually. I haven't done this, but once you define your network flows you should be able to see them when using netflow. However, Without Network Flows defined you should definitely see traffic stats from netflow if everything is configured correctly. G -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sand Philipp Sent: Thursday, March 29, 2007 9:39 AM To: [email protected] Subject: [Ntop] Problems with NetFlow Plugin Hi there, I'm pretty new to ntop, and haven't found anything regarding my problem in the list. I want to use ntop as a Netflow collector for my cisco routers. I already activated the Netflow Plugin, and added 2 sample routers which are sending netflow data to my server. The routers are sending their data correctly, when I execute "show ip flow", I can see, that there are a lot of flows send by the router to the ntop server. When I look to the ntop web interface, and switch to the NIC, and look at the traffic summary, I see a lot of traffic and flows going to that interface *but* when I look at Summary / Network Flows, there are neither any NetFlows counted nor any counters behind the other Plugins such as ICMP Watch or RRD or SNMP. Another funny thing is, that when I select Plugis / NetFlow / Describe, it's always shown that the Plugin is inactive. But when I select Plugins / All, it's shown as active...kind of confuses me a little bit...how can I check if the plugin is really working? Is there a kind of User Guide in the Net, or something like a documentation for ntop? Haven't found so much so far :-/ Regards, Philipp Philipp Sand Netzwerk - Rechenzentrum Allianz Handwerker Services GmbH Theresienstraße 1-5 80333 München Telefon: 089/5 17 19- 1617 Telefax: 089/5 17 19-19 1617 mailto:[EMAIL PROTECTED] www.allianz-services.de Geschäftsführung: Norbert Bierbaum-Hillejan (Vorsitzender), Gerhard Gehring, Angelika Huber Sitz: München, Handelsregister: Amtsgericht München, HRB 129582, USt-Ident-Nr. DE205044340 _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop =========================================================================== "This email is intended to be reviewed by only the intended recipient and may contain information that is privileged and/or confidential. If you are not the intended recipient, you are hereby notified that any review, use, dissemination, disclosure or copying of this email and its attachments, if any, is strictly prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system." _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop
