| Commit message (Collapse) | Author | Age |
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probabilistic
approach for handling Internet domain names.
For switching back to Aho-Corasick it is necessary to edit
ndpi-typedefs.h and uncomment the line
// #define USE_LEGACY_AHO_CORASICK
[1] With Aho-Corasick
$ ./example/ndpiReader -G ./lists/ -i tests/pcap/ookla.pcap | grep Memory
nDPI Memory statistics:
nDPI Memory (once): 37.34 KB
Flow Memory (per flow): 960 B
Actual Memory: 33.09 MB
Peak Memory: 33.09 MB
[2] With the new algorithm
$ ./example/ndpiReader -G ./lists/ -i tests/pcap/ookla.pcap | grep Memory
nDPI Memory statistics:
nDPI Memory (once): 37.31 KB
Flow Memory (per flow): 960 B
Actual Memory: 7.42 MB
Peak Memory: 7.42 MB
In essence from ~33 MB to ~7 MB
This new algorithm will enable larger lists to be loaded (e.g. top 1M domans
https://s3-us-west-1.amazonaws.com/umbrella-static/index.html)
In ./lists there are file names that are named as <category>_<string>.list
With -G ndpiReader can load all of them at startup
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* make dist in `./fuzz`: fixed inconsistent `*.dict` file pattern
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Run ./utils/check_symbols.sh || { FAILED=$?; echo "::error file=${NDPI_LIB}::Unwanted libc symbols found: ${FAILED}. Please make sure to use only ndpi_malloc/ndpi_calloc/ndpi_realloc/ndpi_free wrapper instead of malloc/calloc/realloc/free."; false; }
[ndpi_filter.o]: calloc
Unwanted symbols found: 1
Please make sure to use only ndpi_malloc/ndpi_calloc/ndpi_realloc/ndpi_free wrapper instead of malloc/calloc/realloc/free
Error: Unwanted libc symbols found: 1. Please make sure to use only ndpi_malloc/ndpi_calloc/ndpi_realloc/ndpi_free wrapper instead of
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ndpi_filter* ndpi_filter_alloc(uint32_t elements_number);
bool ndpi_filter_add(ndpi_filter *f, uint64_t value);
bool ndpi_filter_contains(ndpi_filter *f, uint64_t value);
void ndpi_filter_free(ndpi_filter *f);
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Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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The option NSID (RFC5001) is used by Google DNS to report the
airport code of the metro where the DNS query is handled.
This option is quite rare, but the added overhead in DNS code is pretty
much zero for "normal" DNS traffic
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Use two separate lists:
* one for the ingress nodes, which triggers a ProtonVPN classification
* one for the egress nodes, which triggers the
`NDPI_ANONYMOUS_SUBSCRIBER` risk
Add a command line option (to `ndpiReader`) to easily test IP/port
matching.
Add another example of custom rule.
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A fully encrypted session is a flow where every bytes of the
payload is encrypted in an attempt to “look like nothing”.
The heuristic needs only the very first packet of the flow.
See: https://www.usenix.org/system/files/sec23fall-prepub-234-wu-mingshi.pdf
A basic, but generic, inplementation of the popcpunt alg has been added
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ndpi_main.c: In function ‘ndpi_load_ip_category’:
ndpi_main.c:6598:3: warning: ‘strncpy’ specified bound 64 equals destination size [-Wstringop-truncation]
6598 | strncpy(ipbuf, ip_address_and_mask, sizeof(ipbuf));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Added/merged some traces.
Improved Socks identification
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