picosnitch 0.2.4

See which processes make remote network connections

picosnitch

• Monitors your system to notify you whenever a program makes its first remote network connection (while picosnitch has been running)
• Logs and config are stored in ~/.config/picosnitch/snitch.json
• Polls connections and processes at 0.2s intervals by default
• Optionally sniff all traffic for new connections using Scapy for improved reliability
• Inspired by programs such as:
  • GlassWire
  • Little Snitch
  • OpenSnitch
  • simplewall
  • tinysnitch
• picosnitch only provides monitoring and notification capabilities, see the above programs for features such as a GUI, bandwidth tracking, firewall configuration, or filtering

getting started

linux

• install from PyPI with
  pip3 install picosnitch --upgrade --user
• optionally install Scapy
  • you should be able to just install scapy or python3-scapy using your distribution's package manager
  • https://scapy.readthedocs.io/en/latest/installation.html
• run daemon with
  picosnitch
• or run daemon as root to use Scapy
  sudo -E python3 -m picosnitch

windows

• install from PyPI with
  pip install picosnitch --upgrade
• optionally install Scapy
  • https://scapy.readthedocs.io/en/latest/installation.html
• run with
  picosnitch
• you'll probably need to run it as an administrator if using Scapy

building from source

• install from source using python 3 with
  python setup.py install --user
• required dependencies (installed automatically from PyPI on setup if not already present)
  filelock plyer psutil python-daemon
• optional dependency (requires manual installation)
  scapy
• picosnitch.py can also be run directly

configuration

• stored in ~/.config/picosnitch/snitch.json
• terminate picosnitch if it is currently running before making any edits otherwise your changes will be lost

{
  "Config": {
    "Enable pcap": false, # bool, use Scapy to sniff traffic
    "Polling interval": 0.2, # float in seconds
    "Remote address unlog": [80, "firefox"] # list of process names (str) or remote ports (int)
    # will omit connections that match any of these from the log of remote addresses to avoid clutter
    # the process and executable will still be logged if it has not been already
  },
  "Errors": [], # Log of errors by time
  "Latest Entries": [], # Log of entries by time
  "Names": {}, # Log of processes by name containing respective executable(s)
  "Processes": {}, # Log of processes by executable containing:
  # cmdlines, days seen, first seen, last seen, name, ports, remote addresses
  # some cmdlines are consolidated using * as a wildcard, ports are remote ports
  "Remote Addresses": {} # Log of remote addresses containing respective executable(s)
  # and packet summaries if pcap is enabled and process was too short lived for detection via polling
  # some packet summaries are consolidated using * as a wildcard
}