Offensive Security / Pentest
CVSS 3.1 & 4.0 Vulnerability Calculator
Calculate CVSS v3.1 base score, severity ratings, and generate standard Markdown vulnerability advisory snippets.
Open Source / Security & System Tools
Developer & Security
Tools
Browser-based, privacy-first utilities frequently required in cybersecurity audits, network administration, and web engineering.
Privacy Notice: All calculations execute 100% locally in your browser. Entered strings, keys, or passwords are never transmitted to or stored on any server.
Email & DNS Security
SPF & DMARC Inspector / Record Generator
Query real-time DNS TXT and MX records via Cloudflare DoH API, validate anti-spoofing policies, and generate secure configurations.
Application Security
JWT Debugger & Security Auditor
Decode JSON Web Tokens, inspect header claims, check expiration timestamps, and verify HMAC signatures using WebCrypto API.
Cryptography & Security
Password Entropy & Hash Calculator
Measure password bits of entropy, estimate offline brute-force attack durations, and compute SHA-256, SHA-512, and MD5 digests locally.
Network Administration
IPv4 / IPv6 Subnet & CIDR Calculator
Calculate network address, broadcast address, usable host ranges, subnet mask, and wildcard masks from CIDR notation.
System Administration
Linux Permissions (Chmod) & Crontab Parser
Calculate octal and symbolic Linux file permissions (755, 644, SUID) and translate crontab scheduling expressions into plain language.
Yasal Uyarı & Sorumluluk Reddi (TCK m. 243-245 & 6698 Sayılı KVKK):
Bu araç yalnızca eğitim, akademik araştırma, savunma amaçlı analiz ve yetkili sistem denetimi amacıyla sunulmaktadır. Yazılı izni bulunmayan üçüncü taraf sistemler, alan adları veya ağlar üzerinde gerçekleştirilecek yetkisiz eylemlerin tüm cezai ve hukuki sorumluluğu münhasıran kullanıcıya aittir. Girdileriniz sunucuya iletilmez, tamamen tarayıcınızda yerel çalışır. Detaylı Yasal Çerçeve ve Şartlar →