High-Speed Web-based Traffic Analysis and Flow Collection
ntopng is the next generation version of the original ntop, a network traffic probe that monitors network usage. ntopng is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform, MacOSX and on Windows as well.
ntopng – yes, it’s all lowercase – provides a intuitive, encrypted web user interface for the exploration of realtime and historical traffic information.
- Sort network traffic according to many criteria including IP address, port, L7 protocol, throughput, Autonomous Systems (ASs)
- Show realtime network traffic and active hosts
- Produce long-term reports for several network metrics including throughput and application protocols
- Top talkers (senders/receivers), top ASs, top L7 applications
- Monitor and report live throughput, network and application latencies, Round Trip Time (RTT), TCP statistics (retransmissions, out of order packets, packet lost), and bytes and packets transmitted
- Store on disk persistent traffic statistics to allow future explorations and post-mortem analyses
- Geolocate and overlay hosts in a geographical map
- Discover application protocols (Facebook, YouTube, BitTorrent, etc) by leveraging on nDPI, ntop Deep Packet Inspection (DPI) technology
- Characterise HTTP traffic by leveraging on characterisation services provided by Google and HTTP Blacklist.
- Analyse IP traffic and sort it according to the source/destination.
- Report IP protocol usage sorted by protocol type
- Produce HTML5/AJAX network traffic statistics.
- Full support for IPv4 and IPv6
- Full Layer-2 support (including ARP statistics)
- GTP/GRE detunnelling
- Support for MySQL, ElasticSearch and LogStash export of monitored data
- Interactive historical exploration of monitored data exported to MySQL
- Alerts engine to capture anomalous and suspicious hosts
- SNMP v1/v2c support and continuous monitoring of SNMP devices
ntopng comes in three versions, Community, Professional (Small Business Edition) and Enterprise. The Community version is free to use and opensource (code can be found on Github). The Professional and Enterprise offer some extra features that are particularly useful for SMEs or larger organizations. Features are highlighted in the following table.
|Monitor the active flows and hosts of your network||✓||✓||✓|
|Identity application protocols (Facebook, Youtube, BitTorrent, etc) in the network||✓||✓||✓|
|Record and Visualize hosts’ historical applications protocols usage||✓||✓||✓|
|Group hosts by VLAN, Operating System, Country, and Autonomous Systems||✓||✓||✓|
|Get a geographic map of your network communications with the rest of the world||✓||✓||✓|
|Identify top talkers (senders and receivers) hosts with minute resolution||✓||✓||✓|
|Visualize the top HTTP sites contacted by an host||✓||✓||✓|
|Export expired flows information to MySQL, possibly augumented with nProbe data||✓||✓||✓|
|Generate alerts when hosts cross configurable time/traffic thresholds or have suspicious behaviors||✓||✓||✓|
|Get alerts notifications as Slack messages||✓||✓||✓|
|Split, merge, and visualize VLAN based traffic||✓||✓||✓|
|Collect data from nProbe to treat remote nProbe-monitored interfaces and flow exporter devices (for example routers and switches) as if they were local||✓||✓||✓|
|Split, merge, and visualize data collected from nProbe||✓||✓||✓|
|Group local hosts into logical sets of IP and MAC addresses known as host pools †||✓||✓||✓|
|Get a realtime view of top talkers and application protocols and compare them with daily activities||✗||✓||✓|
|Explore recorded MySQL data to identify the cause of network problems||✗||✓||✓|
|Generate graphical reports with top hosts, application protocols, countries, networks, and autonomous systems within any configurable time frame||✗||✓||✓|
|Mark and historicise traffic with user-defined traffic profiles to match hosts, ports and applications using the BPF syntax ‡||✗||✓||✓|
|Limit or block your hosts’ traffic with customized per-protocol policies *||✗||✓||✓|
|Integrate ntopng login with LDAP authentication servers||✗||✓||✓|
|Query SNMP devices data, such as port status, traffic and and MAC address information||✗||✓||✓|
|Send ntopng generated alerts to nagios *||✗||✓||✓|
|Advanced MySQL insertions yielding 5x faster database writes||✗||✗||✓|
|Optimized MySQL aggregations for faster historical flow data explorations||✗||✗||✓|
|Get total traffic and activity reports for any given host, network, or interface||✗||✗||✓|
|Identify attackers and victims through an alerts dashboard in realtime and in the past||✗||✗||✓|
|Visualize host pools’ historical applications protocols usage||✗||✗||✓|
|Explore and filter flow alerts in the past||✗||✗||✓|
|Visualize and historicise SNMP per-device-port traffic||✗||✗||✓|
|Visualize and historicise NetFlow/sFlow devices data||✗||✗||✓|
|Provide an Internet Captive Portal *||✗||✗||✓|
|Apply per-protocol daily traffic and time quotas to your clients *||✗||✗||✓|
|Provide accurate parental control with SafeSearch DNS integration *||✗||✗||✓|
|* Feature not available on Windows
† The Enterprise version allows the creation of up to 128 different host pools. Professional and Community versions allow the creation of up to 3 different host pools.
‡ The Enterprise version allows the creation of up to 128 different traffic profiles. The Professional version allows the creation of up to 16 traffic profiles.
All versions are meant to be used on a “full-fledged PC” such as an x86 machine. Users who plan to install ntopng on embedded devices, should consider using the embedded packages available for ARM.
Monitor a Physical Interface
A physical NIC card can be monitored simply by specifying its interface name as
./ntopng -i eth0
Flow collection requires ntopng to be used in conjunction with nProbe which can act as probe/proxy. The communication between nProbe and ntopng takes place over ZeroMQ, a publish-subscribe protocol that allows ntopng to communicate with nProbe. An environment where a remote nProbe is physically monitoring from a NIC and sending monitored flows to ntopng can be deployed as
./nprobe -i eth1 --zmq tcp://192.168.1.1:5556
./ntopng -i tcp://192.168.1.1:5556
Inline Traffic Bridge
ntopng can be operated as an inline traffic policer and shaper by specifying a couple of interfaces separated by a comma and preceded by keyword ‘bridge:’
./ntopng -i bridge:eth0,eth1
A captive portal can be activated when ntopng operates in bridge mode. However, it is required to add an extra port 80 to make sure clients’ captive portal requests can be served successfully.
./ntopng -i bridge:eth0,eth1 -w 80,3000
ntopng Community is distributed under the GNU GPLv3 license. Professional and Enterprise versions are subject to the EULA terms as well.
Have a look at the download page for installation instructions and at the shop if you are considering to get a license. As all the other ntop products, a licensed ntopng includes installation support.