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/little-snitch

by gumadeiras

Control Little Snitch firewall on macOS. View logs, manage profiles and rule groups, monitor network traffic. Use when the user wants to check firewall activity, enable/disable profiles or blocklists,

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Little Snitch CLI

Control Little Snitch network monitor/firewall on macOS.

Setup

Enable CLI access in Little Snitch → Preferences → Security → Allow access via Terminal

Once enabled, the littlesnitch command is available in Terminal.

⚠️ Security Warning: The littlesnitch command is very powerful and can potentially be misused by malware. When access is enabled, you must take precautions that untrusted processes cannot gain root privileges.

Reference: https://help.obdev.at/littlesnitch5/adv-commandline

Commands

Command Root? Description
--version No Show version
restrictions No Show license status
log No Read log messages
profile Yes Activate/deactivate profiles
rulegroup Yes Enable/disable rule groups & blocklists
log-traffic Yes Print traffic log data
list-preferences Yes List all preferences
read-preference Yes Read a preference value
write-preference Yes Write a preference value
export-model Yes Export data model (backup)
restore-model Yes Restore from backup
capture-traffic Yes Capture process traffic

Examples

View Recent Logs (no root)

littlesnitch log --last 10m --json

Stream Live Logs (no root)

littlesnitch log --stream

Check License Status (no root)

littlesnitch restrictions

Activate Profile (requires root)

sudo littlesnitch profile --activate "Silent Mode"

Deactivate All Profiles (requires root)

sudo littlesnitch profile --deactivate-all

Enable/Disable Rule Group (requires root)

sudo littlesnitch rulegroup --enable "My Rules"
sudo littlesnitch rulegroup --disable "Blocklist"

View Traffic History (requires root)

sudo littlesnitch log-traffic --begin-date "2026-01-25 00:00:00"

Stream Live Traffic (requires root)

sudo littlesnitch log-traffic --stream

Backup Configuration (requires root)

sudo littlesnitch export-model > backup.json

Log Options

Option Description
--last <time>[m|h|d] Show entries from last N minutes/hours/days
--stream Live stream messages
--json Output as JSON
--predicate <string> Filter with predicate

Notes

  • macOS only
  • Many commands require sudo (root access)
  • Profiles: predefined rule sets (e.g., "Silent Mode", "Alert Mode")
  • Rule groups: custom rule collections and blocklists