Local Privacy Firewall
Ranked 5 of 5 application firewalls by recommenders
Blocks PII and secrets before they reach ChatGPT; praised for its approach. Critics call it a stopgap that does not stop Claude dumping files.
Blocks PII and secrets before they reach ChatGPT; praised for its approach. Critics call it a stopgap that does not stop Claude dumping files.
6 people gave an opinion
- recommend it
- 5
- criticize it
- 1
- approval share
- 83%
Recommended in 1 of 13 months
- November 2025: not recommended
- December 2025: recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 5 people recommend itNeeds 10 or more, not met.
- 5 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 1 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Approach praised as great
“I really like the approach you're taking!!”
Comment from 12 Dec 2025 in “Show HN: Local Privacy Firewall-blocks PII and secrets before ChatGPT sees them” “This is a great approach.”
Comment from 12 Dec 2025 in “Show HN: Local Privacy Firewall-blocks PII and secrets before ChatGPT sees them” Wanted between machine and git
“can i have this between my machine and git please”
Comment from 11 Dec 2025 in “Show HN: Local Privacy Firewall-blocks PII and secrets before ChatGPT sees them”
What people warn about
Each mark is one comment
Stopgap for one specific scenario
“to me it feels like a stopgap, something that fixes a specific scenario”
Comment from 11 Dec 2025 in “Show HN: Local Privacy Firewall-blocks PII and secrets before ChatGPT sees them” Does not stop Claude dumping files
“doesn't prevent claude from running a command that dumps the file on stdout”
Comment from 12 Dec 2025 in “Show HN: Local Privacy Firewall-blocks PII and secrets before ChatGPT sees them”
Other application firewalls people recommend
The four most recommended other application firewalls, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Little Snitch | 75 | 39 | 66% | 12 | — | — |
| OpenSnitch | 27 | 5 | 84% | 10 | — | Approved |
| NetGuard | 22 | 4 | 85% | 10 | — | Approved |
| Portmaster | 8 | 2 | 80% | 6 | — | — |
| Local Privacy FirewallThis page | 5 | 1 | 83% | 1 | — | — |
What people said
5 of the 6 comments that mention it, newest first. Each links to the original comment.
“This is a great approach.”
“doesn't prevent claude from running a command that dumps the file on stdout”
“I really like the approach you're taking!!”
“to me it feels like a stopgap, something that fixes a specific scenario”
“can i have this between my machine and git please”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.