Instant Open Port
& Firewall Scanner

Test TCP port status, verify firewall blocking rules, uncover exposed server services, and audit origin isolation in real time.

Presets:

—

Testing TCP socket connectivity...

Scan Complete

Endpoint Identity

Host Query: —

Resolved IPv4 / Origin: —

Transport Protocol: TCP (Transmission Control Protocol)

Port & Service

Port Number: —

Standard Service: —

State / Accessibility: —

Socket Latency

Handshake Latency: —

Firewall Policy: Stateful Inspection Active

Cloaking Protection: Sub-15ms Edge Shielding

Port Scan Audit Table

1 Port Scanned

PORT	SERVICE IDENTITY	PROTOCOL	STATUS
Waiting for query...

Network Architecture

Key TCP Service Ports Explained

Understanding which ports are accessible on your host ensures proper firewall configuration, service availability, and hardened server security.

Port 80 & 443

Web Delivery (HTTP/S)

Primary delivery ports for web traffic. Port 80 handles unencrypted HTTP requests, while 443 establishes encrypted TLS sessions for landing pages.

Port 22

SSH Remote Shell

Administrative management access. Exposing port 22 directly on money page IPs invites automated brute-force bots and fingerprints Linux server origins.

Port 8080 & 8443

Proxies & Alt Web

Common alternative HTTP/HTTPS ports used by reverse proxies, Docker microservices, tracking dashboards, and staging environments.

Port 3306 & 5432

Database Engines

Standard connection ports for MySQL and PostgreSQL. These ports should always remain firewalled or bound strictly to localhost (127.0.0.1).

Origin Server Shielding

Exposed backend ports leak origin servers.
Shield your infrastructure behind Cloaker.net edge nodes.

When affiliate landing pages expose open backend ports (SSH 22, database 3306, cPanel 2083), ad intelligence crawlers and competitor spy scrapers easily fingerprint your real hosting provider. Cloaker.net terminates all incoming requests at distributed global edge proxies in under 15ms.

Complete Origin IP & Port Concealment

Sub-15ms Single-Hop Edge Redirection

AI Reviewer Filtering (Meta, Google, TikTok)

Protection from Port Scanners & Spy Tools

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Support & Guidance

Frequently asked questions

Technical answers regarding port states, firewall rules, and server cloaking defense.

What is an Open Port Checker?

An Open Port Checker tests whether a specific TCP/IP port on a server or public IP address is open, closed, or filtered by a firewall, confirming if external services can connect.

Why is open port scanning critical before running cloaked ad campaigns?

Exposing backend administrative ports (like SSH 22, MySQL 3306, or cPanel 2083/2087) on your money page IP allows ad bots and spy tools to correlate server fingerprints. Cloaker.net isolates your traffic at edge reverse proxies so origin ports remain invisible.

What is the difference between an Open, Closed, and Filtered port?

An Open port actively accepts incoming connections. A Closed port responds with a TCP reset (RST) indicating no service is listening. A Filtered / Blocked port drops packets completely, meaning a firewall or ISP rule is blocking the request.

What are common ports to check for web servers?

Standard ports include 80 (HTTP), 443 (HTTPS), 8080/8443 (Alt Web), 22 (SSH), 21 (FTP), 25/587 (SMTP), 3306 (MySQL), 5432 (PostgreSQL), and 27017 (MongoDB).

Works seamlessly with your favorite ad networks, trackers, and traffic sources