Tag: network

Articles

• Forensic Reconstruction of Black-Box Protocols

  14 Jun, 2026

  A legacy server is dropping connections with no error codes. I walk through the process of using tcpdump, strace, and gdb to reconstruct a custom binary protocol from scratch.

• Signing Java Objects for Secure Transfer

  13 Oct, 2009

  Use Java's SignedObject with DSA public-key cryptography to digitally sign serialized Java objects before network transfer. The signed objects are verified at the receiving end ensuring data integrity and authenticity without relying on shared secrets.

• Simple Proxy Server in Java

  26 Sep, 2009

  A Java HTTP proxy server using socket-based request-response forwarding with configurable port binding, timeout handling, and continuous listening loop architecture.