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* Patricia tree, Ahocarasick automa, LRU cache: add statistics (#1683)Ivan Nardi2022-07-29
| | | | | | | | | | Add (basic) internal stats to the main data structures used by the library; they might be usefull to check how effective these structures are. Add an option to `ndpiReader` to dump them; enabled by default in the unit tests. This new option enables/disables dumping of "num dissectors calls" values, too (see b4cb14ec).
* TINC: avoid processing SYN packets (#1676)Ivan Nardi2022-07-28
| | | | | | | | | | | Since e6b332aa, we have proper support for detecting client/server direction. So Tinc dissector is now able to properly initialize the cache entry only when needed and not anymore at the SYN time; initializing that entry for **every** SYN packets was a complete waste of resources. Since 4896dabb, the various `struct ndpi_call_function_struct` structures are not more separate objects and therefore comparing them using only their pointers is bogus: this bug was triggered by this change because `ndpi_str->callback_buffer_size_tcp_no_payload` is now 0.
* Update the protocol bitmask for some protocols (#1675)Ivan Nardi2022-07-27
| | | | | | | Tcp retransmissions should be ignored. Remove some unused protocol bitmasks. Update script to download Whatsapp IP list.
* Improved Jabber/XMPP detection. (#1661)Toni2022-07-13
| | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Keep track of how many dissectors calls we made for each flow (#1657)Ivan Nardi2022-07-11
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* SMB: add (partial) support for messages split into multiple TCP segments (#1644)Ivan Nardi2022-07-07
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* Avoid spurious calls to extra dissection (#1648)Ivan Nardi2022-07-07
| | | | If the extra callabck is not set, calling the extra dissection is only a waste of resources...
* Fix handling of NDPI_UNIDIRECTIONAL_TRAFFIC risk (#1636)Ivan Nardi2022-07-05
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* Added unidirectional traffic flow riskLuca Deri2022-06-20
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* Updated DNS alert triggered only with TTL == 0Luca Deri2022-06-14
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* Improved DNS traffic analysisLuca Deri2022-06-13
| | | | Added ability to identify application and network protocols
* Dissect host line if SSDP contains such. (#1586)Toni2022-06-07
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Updated tests resultsLuca Deri2022-05-30
| | | | Code cleanup
* Improved TLS alert detection. (#1542)Toni2022-05-08
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Improved TLS application data detection. (#1532)Toni2022-04-27
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Improve protocol stacks (#1425)Ivan Nardi2022-01-30
| | | | | | | | | | | | | | | | | We should have two protocols in classification results only when the "master" protocol allows some sub-protocols. Classifications like `AmazonAWS`, `TLS/AmazonAWS`, `DNS/AmazonAWS` are fine. However classifications like `NTP/Apple`, `BitTorrent/Azure`, `DNScrypt.AmazonAWS` or `NestLogSink.Google` are misleading. For example, `ndpiReader`shows `BitTorrent/Azure` flows under `Azure` statistics; that seems to be wrong or, at least, very misleading. This is quite important since we have lots of addresses from CDN operators. The only drawback of this solution is that right now ICMP traffic is classified simply as `ICMP`; if we are really interested in ICMP stuff we can restore the old behaviour later.
* Sync unit tests results (#1423)Ivan Nardi2022-01-28
| | | Fix: 7a3aa41a
* Add a "confidence" field about the reliability of the classification. (#1395)Ivan Nardi2022-01-11
| | | | | | | | | | | | | As a general rule, the higher the confidence value, the higher the "reliability/precision" of the classification. In other words, this new field provides an hint about "how" the flow classification has been obtained. For example, the application may want to ignore classification "by-port" (they are not real DPI classifications, after all) or give a second glance at flows classified via LRU caches (because of false positives). Setting only one value for the confidence field is a bit tricky: more work is probably needed in the next future to tweak/fix/improve the logic.
* Improve/add several protocols (#1383)Ivan Nardi2021-12-18
| | | | | | | | | | | | | | | | | | | Improve Microsoft, GMail, Likee, Whatsapp, DisneyPlus and Tiktok detection. Add Vimeo, Fuze, Alibaba and Firebase Crashlytics detection. Try to differentiate between Messenger/Signal standard flows (i.e chat) and their VOIP (video)calls (like we already do for Whatsapp and Snapchat). Add a partial list of some ADS/Tracking stuff. Fix Cassandra, Radius and GTP false positives. Fix DNS, Syslog and SIP false negatives. Improve GTP (sub)classification: differentiate among GTP-U, GTP_C and GTP_PRIME. Fix 3 LGTM warnings.
* ndpiReader: slight simplificaton of the output (#1378)Ivan Nardi2021-11-27
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* Fixed cleartext protocol assignment (#1357)Ivan Nardi2021-10-25
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* Refreshed results listLuca Deri2021-10-16
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* Fix parsing of ipv6 packets with extension headersNardi Ivan2021-09-19
| | | | | | | | Decoding of ipv6 traffic with extension headers was completely broken, since the beginning of the L4 header was always set to a wrong value. Handle the ipv6 fragments in the same way as the ipv4 ones: keep the first one and drop the others.
* Updated outputLuca Deri2021-08-07
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* ndpiReader: add statistics about nDPI performance (#1240)Ivan Nardi2021-07-13
| | | | | | | The goal is to have a (roughly) idea about how many packets nDPI needs to properly classify a flow. Log this information (and guessed flows number too) during unit tests, to keep track of improvements/regressions across commits.
* Updated category labelsLuca Deri2021-07-08
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* Improved TLS browser detection heuristicsLuca Deri2021-05-19
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* Added flow risk scoreLuca Deri2021-05-18
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* Added browser TLS heuristicLuca Deri2021-05-13
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* (Temporarely) Disabled fragment manager (#1129)Luca Deri2021-02-05
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* Updated results due to the new fragment manager handlerLuca Deri2021-02-03
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* Fixes #1029Luca Deri2020-11-27
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* Reworked MDNS dissector that is not based on the DNS dissectorLuca Deri2020-09-17
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* Stddev calculation changesLuca Deri2020-08-30
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* Fixed false positive in suspicous user agentLuca Deri2020-08-30
| | | | Optimized stddev calculation
* Added new traffic category for connectivity check detectionLuca Deri2020-08-04
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* Fixed partial TLS dissectionLuca Deri2020-07-30
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* Changed due to bin size extensionLuca Deri2020-07-30
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* User agent detection improvementsLuca Deri2020-07-21
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* Fixed race condition in ndpi_ssl_version2str() caused by static qualifier in ↵Toni Uhlig2020-07-11
| | | | | | | | | the version string buffer. * added also GREASE supported tls versions as specified in https://tools.ietf.org/html/draft-davidben-tls-grease-01#page-4 Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Updated test results due to bin changesLuca Deri2020-07-09
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* Fixes #906Luca Deri2020-06-22
| | | | Packet bins are not printed wehn empty
* Added ndpi_bin_XXX APILuca Deri2020-06-22
| | | | Added packet lenght distribution bins
* Added check in TLS 1.2+ for reporting a risk when TLS is not used to carry HTTPSLuca Deri2020-06-08
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* Added fix to avoid potential heap buffer overflow in H.323 dissectorLuca Deri2020-05-19
| | | | Modified HTTP report information to make it closer to the HTTP field names
* Added the ability to detect when a known protocol is using a non-standard portLuca Deri2020-05-10
| | | | Added check to spot executables exchanged via HTTP
* Added TLS issuerDN and subjectDNLuca Deri2020-05-07
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* Updated resultsLuca Deri2020-04-21
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* Results updateLuca Deri2020-04-17
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* Added android.pcapLuca Deri2020-03-23
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