Interactive Network Port Directory & Protocol Explorer
IANA DirectorySearch and inspect standardized TCP and UDP network ports, protocols, and vulnerabilities directly in your browser. Explore over 1,000 official IANA port assignments across well-known (0-1023) and registered (1024-49151) ports with instant filtering and zero cloud uploads.
Interactive Network Port Directory & Protocol Explorer
Search standard IANA ports (0-65535), TCP/UDP protocols, security vulnerabilities, and development mappings.
Interactive Interactive Network Port Directory & Protocol Explorer Workspace
Search and explore over 1,000+ IANA network service ports and developer servers. View transport protocols (TCP/UDP), official RFC specifications, common security attack vectors, and development port alternatives.
How This Tool Works (100% Client-Side Engine)
The tool uses an indexed client-side database of over 1,000 IANA port records stored in memory. Real-time filtering executes via JavaScript Array.filter matching port numbers, service descriptions, transport protocols, and status classifications with zero latency.
Step-by-Step Guide
Type Port Number or Service Name
Enter a port number (e.g. 443, 3306, 8080) or service name (e.g. Redis, HTTPS, SSH) into the search filter.
Inspect Protocol & Description
Review official IANA service name, transport protocol (TCP/UDP), description, and security usage notes.
Filter by Port Range Category
Toggle between Well-Known Ports (0-1023), Registered Ports (1024-49151), and Dynamic/Private Ports.
Why Use This Tool: Privacy & Performance
Configuring network firewalls, auditing security logs, hardening server ports, or reviewing Docker port mappings requires knowing which protocols and applications associate with specific port numbers. Remembering whether NTP uses port 123, BGP uses port 179, or LDAP uses port 389 is challenging, and searching random web forums exposes internal security research queries to third-party tracking. ToolByte Interactive Network Port Directory embeds a comprehensive offline database of IANA-assigned and common unofficial service ports right inside your browser memory. You can search by port number, protocol name (HTTP, SSH, DNS, PostgreSQL), or keyword, inspect security implications, and copy configuration parameters instantly without network connectivity.
Common Use Cases & Workflows
Firewall Rule Configuration (iptables, UFW, AWS Security Groups)
Lookup required inbound and outbound port numbers and transport protocols (TCP vs. UDP) when drafting firewall rules.
Security Auditing & Penetration Testing
Identify potential services and known vulnerabilities associated with open ports discovered during Nmap network port scans.
Docker & Kubernetes Port Mapping
Verify standard internal container port numbers when configuring Dockerfile EXPOSE directives and Kubernetes Service manifests.
Network Administration & Protocol Education
Learn transport layer service assignments and RFC standards for networking certifications and systems engineering.
Technical Limitations & Operational Boundaries
Frequently Asked Questions
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