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NetfilterQueue run_socket error

See original GitHub issue

I’m running NetfilterQueue git version because I couldn’t get pip to install it but that shouldn’t matter I think. LOG:

##$ sudo python3 engine.py --server-port 80 --strategy "[TCP:flags:PA]-duplicate(tamper{IP:len:replace:64},)-|" --log debug

2020-01-25 04:13:35 DEBUG:[ENGINE] Engine created with strategy [TCP:flags:PA]-duplicate(tamper{TCP:dataofs:replace:10}(tamper{TCP:chksum:corrupt},),)-| \/ (ID xlez5tdl) to port 80
2020-01-25 04:13:35 DEBUG:[ENGINE] Configuring iptables rules
2020-01-25 04:13:35 DEBUG:[ENGINE] iptables -A OUTPUT -p tcp --dport 80 -j NFQUEUE --queue-num 1
2020-01-25 04:13:35 DEBUG:[ENGINE] iptables -A INPUT -p tcp --sport 80 -j NFQUEUE --queue-num 2
2020-01-25 04:13:35 DEBUG:[ENGINE] iptables -A OUTPUT -p udp --dport 80 -j NFQUEUE --queue-num 1
2020-01-25 04:13:35 DEBUG:[ENGINE] iptables -A INPUT -p udp --sport 80 -j NFQUEUE --queue-num 2
2020-01-25 04:13:36 DEBUG:[ENGINE] NFQueue Initialized after 0
2020-01-25 04:13:37 ERROR:[ENGINE] Exception out of run_nfqueue() (direction=in)
Traceback (most recent call last):
  File "engine.py", line 115, in run_nfqueue
    nfqueue.run_socket(nfqueue_socket)
SystemError: <method 'run_socket' of 'netfilterqueue.NetfilterQueue' objects> returned NULL without setting an error
2020-01-25 04:13:37 ERROR:[ENGINE] Exception out of run_nfqueue() (direction=out)
Traceback (most recent call last):
  File "engine.py", line 115, in run_nfqueue
    nfqueue.run_socket(nfqueue_socket)
SystemError: <method 'run_socket' of 'netfilterqueue.NetfilterQueue' objects> returned NULL without setting an error ```

Issue Analytics

State:
Created 4 years ago
Comments:16 (5 by maintainers)

Top GitHub Comments

1reaction

2xyocommented, Feb 17, 2020

@zayn1991 could you try:

$ pip3 install --upgrade pip 
$ pip3 install --upgrade git+https://github.com/kti/python-netfilterqueue

0reactions

FireMasterKcommented, Aug 18, 2020

I’m getting the same error in Ubuntu 20.04 unfortunately. Any idea on what I can do?

ubuntu@instance-20200501-0913:~/geneva$ sudo python3 engine.py --server-port 80 --strategy "[TCP:flags:PA]-duplicate(tamper{IP:len:replace:64},)-|" --log debug
2020-08-18 21:38:36 WARNING:[ENGINE] No environment ID given, one has been generated (2mn7qqlc)
2020-08-18 21:38:36 DEBUG:[ENGINE] Engine created with strategy [TCP:flags:PA]-duplicate(tamper{IP:len:replace:64},)-| \/ (ID 2mn7qqlc) to port 80
2020-08-18 21:38:36 DEBUG:[ENGINE] Configuring iptables rules
2020-08-18 21:38:36 DEBUG:[ENGINE] iptables -A OUTPUT -p tcp --dport 80 -j NFQUEUE --queue-num 2
2020-08-18 21:38:36 DEBUG:[ENGINE] iptables -A INPUT -p tcp --sport 80 -j NFQUEUE --queue-num 1
2020-08-18 21:38:36 DEBUG:[ENGINE] iptables -A OUTPUT -p udp --dport 80 -j NFQUEUE --queue-num 2
2020-08-18 21:38:36 DEBUG:[ENGINE] iptables -A INPUT -p udp --sport 80 -j NFQUEUE --queue-num 1
2020-08-18 21:38:36 DEBUG:[ENGINE] NFQueue Initialized after 0
2020-08-18 21:38:37 ERROR:[ENGINE] Exception out of run_nfqueue() (direction=in)
Traceback (most recent call last):
  File "engine.py", line 197, in run_nfqueue
    nfqueue.run_socket(nfqueue_socket)
SystemError: <method 'run_socket' of 'netfilterqueue.NetfilterQueue' objects> returned NULL without setting an error
2020-08-18 21:38:37 ERROR:[ENGINE] Exception out of run_nfqueue() (direction=out)
Traceback (most recent call last):
  File "engine.py", line 197, in run_nfqueue
    nfqueue.run_socket(nfqueue_socket)
SystemError: <method 'run_socket' of 'netfilterqueue.NetfilterQueue' objects> returned NULL without setting an error

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