little-snitch
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, or troubleshoot network connections.
Install
mkdir -p .claude/skills/little-snitch && curl -L -o skill.zip "https://mcp.directory/api/skills/download/7361" && unzip -o skill.zip -d .claude/skills/little-snitch && rm skill.zipInstalls to .claude/skills/little-snitch
About this skill
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
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