Network Tools
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TCP Top 100 Port Scan

A simple TCP Port Scan to quickly determine the status of an Internet facing service or firewall, using the popular Nmap Port Scanning tool. Served from multiple globally hosted servers.

Note that this scan will test for Nmaps Top 100 most commonly used ports.

This tools is FREE to use but are subject to a daily query limit for unregistered users. You have used 0 queries of your 50 query daily limit restriction, you can remove this restriction by registering with one of our cost effective plans.

Test Firewall through Port Status

By reviewing the results of a TCP Port Scan it is usually possible to determine whether a Firewall is present and blocking all traffic to ports that are not available.

If some ports are in a closed state and some filtered this indicates a firewall or router may be blocking traffic but is not necessarily configured correctly as closed ports in most cases should be filtered by the firewall.

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