Amit’s Notes

The following pages contain my notes and code snippets accumulated over the years. They are categorized into the following sections:

• Networking
• Forensics
• Debian
• Study

Networking

• Networking
  • HTTP
    • Query String
    • Chunked Transfer Encoding
    • Codes
    • Methods
    • Persistent Connections
    • Document Caching
    • Authentication
    • HTTPS
    • nginx engineX
    • Others
  • DNS
    • Overview
    • Typical Name Resolution
    • Protocol
    • DNS Database
    • Reverse Lookups
    • DNS Caches vs. DNS Servers vs. DNS Resolvers
    • Authoritative vs Non-authoritative Responses
    • Zone Tranfers
    • Anycast DNS
    • DNS Security
    • Examples
  • Firewall
    • First Generation: Packet Filters
    • Second Generation: Stateful Filters
    • Third Generation: application layer
  • IP
    • Path MTU Discovery (PMUTD)
  • tcpdump
    • Flags
    • Examples
  • Cheatsheet
    • Finding Duplicate IP Addresses on the Network
    • Capturing cupsd Traffic
  • Troubleshooting
    • Identifying and Solving Performance Issues
    • Common Server Problems
    • Common AJAX Problems
    • Common App Engine Problems

Forensics

• Forensics
  • Cheatsheet
    • Mounting E01 Images
    • Mounting ISO9660
    • Setting HPA
    • Setting DCO
    • Cloning Partition Table
    • Inspecting Process Syscalls Using sysdig
    • Check for problematic I/Os
    • Tracing SUID Programs

Debian

• Debian
  • Setup
    • Install
    • Basic Setup
    • systemd
    • Enlightenment
    • Applications
  • Commands
    • Finding hardlink of file
    • When DKMS Build Fails Due to Missing Source
    • No configure script, only configure.ac
    • Transferring files over netcat

Study

• Study
  • Google I/O 2011: Life in App Engine Production
  • Google I/O 2011: More 9s Please: Under The Covers of the High Replication Datastore
  • The Art of Unix Programming
    • Chapter 1: Philosophy
    • Chapter 2: Origins and History of Unix
    • Chapter 3: Contrasts
    • Chapter 4: Modularity
    • Chapter 5: Textuality
    • Chapter 6: Transparency
    • Chapter 7: Multiprogramming
  • Python
    • Common Questions
    • Common Mistakes
  • Project Management
    • Agile
    • Others
  • Programming
    • Character Encodings For Modern Programmers