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Questions tagged [ntop]

38 questions
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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 server. This is working. However we want to…
BeowulfNode42
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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 20 10:22:44 2013 Possible solution: please use…
alex347
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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 graphing and historical capabilities. Have my…
gravyface
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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 40 overseas offices connecting via VPN with total…
dunxd
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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 (t2992630672) for data collection THREADMGMT[t2992630672]:…
FR6
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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 dumping all it's data into a MySQL database. I've…
oucil
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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 huge amount of bandwidth that such a small site…
giantforest
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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 giving the effort. We're just getting started at…
flickerfly
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