fnfqueue
Fast netfilter nfqueue python and C interface. Gets the speed from
- avoiding memory allocation
- batching reads (uses
recv_mmsg)
It also does not use the callback-like interface of libnetfilter-queue and provides a more python like iterator interface. Additionally, it doesn't assume anything and therefore doesn't automatically set verdicts on packets (unlike python-nfqueue in debian which accepts everything after you return from the callback...)
It can handle ping -f (even iperf if the moon is in the right spot) to localhost from within python.
Focus is on a python like interface.
Short example for mangling packets:
iptables -A OUTPUT <filter here> -j NFQUEUE --queue-num 1
import fnfqueue
queue = 1
conn = fnfqueue.Connection()
try:
q = conn.bind(queue)
q.set_mode(0xffff, fnfqueue.COPY_PACKET)
except PermissionError:
print("Access denied; Do I have root rights or the needed capabilities?")
sys.exit(-1)
while True:
try:
for packet in conn:
packet.payload = packet.payload # modify the packet here
packet.mangle()
except fnfqueue.BufferOverflowException:
print("buffer error")
pass
conn.close() # this can be called concurrently to cancel the above for loop
Help is provided as python docs.
No C libraries are needed. Needs cffi for building. Kernel and libc must be recent enough to support nfqueue and recvmmsg (linux 2.6.33, glibc 2.12 - more recent kernels provide better performance).
1 maintainer
Metadata
1 maintainer
Release files for fnfqueue 1.1.2
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| fnfqueue-1.1.2.tar.gz | 14.5 kB | Without provenance | Details for fnfqueue-1.1.2.tar.gz |
Built distributions (wheels)
Total release size: 344.0 kB
Release files / fnfqueue-1.1.2.tar.gz
| Download URL | fnfqueue-1.1.2.tar.gz |
|---|---|
| Size | 14.5 kB |
| Tags | Source |
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Release files / fnfqueue-1.1.2-pp39-pypy39_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl
| Download URL | fnfqueue-1.1.2-pp39-pypy39_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl |
|---|---|
| Size | 16.4 kB |
| Tags | Linux glibc 2.12+ x86-64 Linux glibc 2.28+ x86-64 PyPy 3.9 PyPy 3.9 7.3 |
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Release files / fnfqueue-1.1.2-pp38-pypy38_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl
| Download URL | fnfqueue-1.1.2-pp38-pypy38_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl |
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Release files / fnfqueue-1.1.2-pp37-pypy37_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl
| Download URL | fnfqueue-1.1.2-pp37-pypy37_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl |
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| Size | 46.6 kB |
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