About
Makes one short TCP connection from the CheckKit server to a public host to see if the port accepts it.
How to use
Enter host and port. The result is whether this probe could connect, not whether your machine can.
What this tool checks
Whether one public probe can complete a short TCP handshake to the target port.
How to read the results
“Connectable” only means the handshake succeeded. Firewalls may allow the probe IP and deny yours, or the reverse.
Limits and safety
One short connection, not a port scanner. Only test hosts you are allowed to manage.
FAQ
Does open mean the service is healthy?
No. An open port can still serve errors or require auth.
Can it test UDP?
This is a short TCP connect test.
Does timeout mean closed?
Timeouts are more often filtering, not necessarily “no process”.
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