tempesta-tech/tempesta
Nov 2024 – Jan 2025
3 Months active
Languages Used
C
Technical Skills
C programmingTLS/SSLC ProgrammingCode FormattingCode QualityNetwork Protocols
Vladislav Kutumov
PROFILE
Vladislav Kutumov
Worked on the tempesta-tech/tempesta repository to enhance TLS stability, client fingerprinting, and traffic management over a three-month period. Focused on hardening ALPN handling and ClientHello parsing in C, introducing guard checks to prevent null-pointer dereferences and reduce handshake failures. Delivered features for JA5-based filtering and rate limiting across TLS and HTTP, unifying configuration and extending access logs for improved security analytics. Applied targeted code formatting and quality improvements to the TLS subsystem, emphasizing maintainability and reliability. Leveraged skills in C programming, network protocols, and TLS/SSL to deliver safer, more observable, and operationally efficient network proxy functionality.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
13Total
Bugs
2
Commits
13
Features
3
Lines of code
2,094
Activity Months3
Your Network
29 peopleShared Repositories
18
Work History
January 2025
4 Commits • 1 Features
Jan 1, 2025January 2025 highlights for the tempesta project: Delivered JA5-based filtering across TLS and HTTP with rate limiting and unified configuration, and extended access logs to capture JA5T/JA5H values for security analytics. Implemented a unified JA5 filtering code path to support multiple JA5 types, enabling easier maintenance and future expansion. Fixed JA5t ALPN field calculation to ensure accurate TLS session handling and protocol negotiation. These changes improve security visibility, reliability, and operational efficiency, delivering measurable business value through better traffic control and analytics.
4 Commits • 1 Features
Jan 1, 2025January 2025 highlights for the tempesta project: Delivered JA5-based filtering across TLS and HTTP with rate limiting and unified configuration, and extended access logs to capture JA5T/JA5H values for security analytics. Implemented a unified JA5 filtering code path to support multiple JA5 types, enabling easier maintenance and future expansion. Fixed JA5t ALPN field calculation to ensure accurate TLS session handling and protocol negotiation. These changes improve security visibility, reliability, and operational efficiency, delivering measurable business value through better traffic control and analytics.
January 2025
December 2024
8 Commits • 2 Features
Dec 1, 2024Month: 2024-12 — Focused on hardening TLS server capabilities, improving client fingerprinting reliability, and strengthening code quality to reduce production risk. Delivered two core TLS-related features for tempesta, enhanced ALPN and ClientHello parsing to reduce handshake failures, and refined JA5 fingerprint computation for stable telemetry. Also applied targeted linting and formatting fixes to the TLS subsystem to improve maintainability and future velocity. Business value: more reliable, secure TLS connections across diverse clients; improved visibility into client implementations; and a solid foundation for future TLS enhancements.
December 2024
8 Commits • 2 Features
Dec 1, 2024Month: 2024-12 — Focused on hardening TLS server capabilities, improving client fingerprinting reliability, and strengthening code quality to reduce production risk. Delivered two core TLS-related features for tempesta, enhanced ALPN and ClientHello parsing to reduce handshake failures, and refined JA5 fingerprint computation for stable telemetry. Also applied targeted linting and formatting fixes to the TLS subsystem to improve maintainability and future velocity. Business value: more reliable, secure TLS connections across diverse clients; improved visibility into client implementations; and a solid foundation for future TLS enhancements.
November 2024
1 Commits
Nov 1, 2024Monthly summary for 2024-11: TLS stability hardening in ALPN handling for the Tempesta proxy, focusing on preventing null-pointer dereferences and reducing crash risk during TLS handshakes. Delivered a targeted, low-risk patch and guard checks to safely handle potential null ALPN fields, improving runtime reliability.
1 Commits
Nov 1, 2024Monthly summary for 2024-11: TLS stability hardening in ALPN handling for the Tempesta proxy, focusing on preventing null-pointer dereferences and reducing crash risk during TLS handshakes. Delivered a targeted, low-risk patch and guard checks to safely handle potential null ALPN fields, improving runtime reliability.
November 2024
Activity
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Quality Metrics
Correctness89.2%
Maintainability86.2%
Architecture81.6%
Performance78.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
C ProgrammingC programmingCode FormattingCode QualityConfiguration ManagementLog AnalysisNetwork ProtocolsNetwork SecurityNetwork programmingPerformance OptimizationRate LimitingSystem ProgrammingTLSTLS/SSLTraffic Management
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