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The tool crashes when --nmap-options flag is used.
I'm using Python 3.10 and latest nmap, masscan from github.

/scripts/jfscan# jfscan --top-ports 1000 --nmap --nmap-options='-sV' 123.123.123.0/24
usage: jfscan [-h] [--targets TARGETS] (-p PORTS | --top-ports TOP_PORTS | --yummy-ports) [--resolvers RESOLVERS] [--enable-ipv6] [--scope SCOPE] [-r MAX_RATE] [--wait WAIT] [--disable-auto-rate] [-i INTERFACE]
              [--source-ip SOURCE_IP] [--router-ip ROUTER_IP] [--router-mac ROUTER_MAC] [--router-mac-ipv6 ROUTER_MAC_IPV6] [-oi] [-od] [-o OUTPUT] [-q | -v] [--nmap] [--nmap-options NMAP_OPTIONS]
              [--nmap-threads NMAP_THREADS] [--nmap-output NMAP_OUTPUT] [--version]
              [target]
jfscan: error: incorrect nmap options: 
Segmentation fault

/scripts/jfscan# 

Hi, does the --ports flag accept a ports.txt file with one port on each line?
I tried:

--ports "$(cat /tmp/ports_20k.txt | grep -iv '^80$\|^443$\|^8080$\|^8443$' | sort -u | tr '\n' ',' | sed 's/,$/\n/')" 

Error:

Argument list too long

I sometimes face with firewalls on some specific servers or IP ranges. For example, when i scan a range /22, only a few IPs behind a firewall, they detect the packets that masscan sends and shows that all 65535 ports are open, is there any way to detect or skip if which IP is actual behind a firewall like my situation? Thanks.

I need a way to run this tool to send millions of packets per second with 10g nic.
please help me.

Hi, i would like to see found ports while on scanning instead of waiting masscan finishs its progress. Is there any workaround?

For example, after getting many active ports, i want to cancel the progress and get the ports had been found.

Hi, i'm playing hackthebox.eu and i need to do port scanning with specific utun4 interface which is openvpn config given by them to scan local machine. But it doesn't work as expected rather than running masscan itself.

Scanning with jfscan

Scanning with masscan

Hello,

when I'm installing (pip3 install . ) fail, I have this error:

Building wheels for collected packages: jfscan
  Building wheel for jfscan (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py bdist_wheel did not run successfully.
  │ exit code: 1
  ╰─> [10 lines of output]
      running bdist_wheel
      running build
      running build_py
      /usr/local/lib/python3.9/dist-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
        warnings.warn(
      installing to build/bdist.linux-x86_64/wheel
      running install
      running install_lib
      creating build/bdist.linux-x86_64/wheel
      error: could not create 'build/bdist.linux-x86_64/wheel': Permission denied
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for jfscan
  Running setup.py clean for jfscan
Failed to build jfscan

I have installed all dependencies and the versión of jfscan is 1.3.1 and my version of SO is Debian 5.16.18-1

A greeting and thanks