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InterceptSuite – MitM proxy that handles StartTLS upgrades

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InterceptSuite – MitM proxy that handles StartTLS upgrades

I built InterceptSuite to solve a problem I kept running into as a security engineer: there are virtually no good MITM proxies for non-HTTP protocols, and the few that exist completely break when protocols upgrade from plaintext to TLS. The core technical challenge was implementing universal TLS upgrade detection. When PostgreSQL, MySQL, SMTP, or any other protocol issues a StartTLS command, most tools just give up. They'll show you the initial plaintext handshake, then nothing when TLS encryption kicks in. InterceptSuite automatically detects when ANY protocol switches to TLS and handles the interception seamlessly. It's not just another HTTP proxy - it's designed specifically for database connections, email protocols, and desktop thick client application traffic that uses TLS or TLS upgrades. Technical highlights: - Automatic TLS upgrade handling for any protocol, including StartTLS like SMTP, PostgreSQL, etc - Cross-platform GUI (Windows, macOS, Linux) - Real-time traffic interception and modification - Project management for security assessments The Standard Edition is free and open source. There's also a Pro version with additional features like PCAP export and project management. Would love feedback.

Visit productView on Hacker NewsAug 25, 2025
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Launch Intel predictions

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Indie HackersFits the IH revenue-focused audience · Strong signals: including · Missing: supports, reddit linkedin, podcasting
72%72% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.
best fitHighest predicted score across all platforms for this description.
Product HuntOn track for Day 1 leaderboard · Strong signals: mac, macos, email · Missing: agents, agent, cursor
70%70% predicted probability of success on Product Hunt, based on ML models trained on real launch data.
AppSumoStrong fit for a featured deal · Strong signals: platform · Missing: plus, intuitive, reviews
55%55% predicted probability of success on AppSumo, based on ML models trained on real launch data.
Hacker NewsStrong engagement from HN community · Strong signals: exist, open source, io · Missing: https docs, excited, just released
52%52% predicted probability of success on Hacker News, based on ML models trained on real launch data.
nativeThis product was originally launched on this platform.
TrustMRRLess likely to generate early MRR · Missing: mobile apps, ios, personal
32%32% predicted probability of success on TrustMRR, based on ML models trained on real launch data.
Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue
12%12% predicted probability of success on Acquire.com, based on ML models trained on real launch data.
BetaListMay not resonate with beta-testers · Missing: web3, chat, crypto
0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

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