UUID Checker: Version, Variant, and Well-Formedness in One Look
Confirm an identifier fits standard UUID syntax.
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16 Published Guides
Security & Network
Free security and network checks: DNS lookups, SSL expiry, IP analysis, headers, and password strength. Verify before you trust.
Articles — Page 2
JWT Decoder: See What an Auth Token Is Really Claiming
Split tokens into header, payload, and signature.
Bcrypt Hash: Test Password Hashing Without a Server
Hash strings for password handling tests.
Port Scanner Reference: What 22, 443, and 3389 Actually Are
Interactive directory of common TCP/UDP ports.
MAC Vendor Lookup: Who Made That Device on Your Network
Identify manufacturers from MAC prefixes.
IPv4 Subnet Calculator: Masks, Hosts, and Ranges Without the Binary
Network masks, wildcards, and host ranges.
Understanding Security & Network: Concepts & Architecture
💡 Core Workflows
Every guide in Security & Network is written from real-world development and security scenarios. Use these articles to eliminate repetitive scripts and establish robust internal standards.
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