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TCP PORT MONITORING
TCP port
monitoring.
Monitor TCP port availability and response time to check whether important services accept connections. Follow service reachability alongside host health, rather than relying only on a running server.
Monitor types, intervals, and advanced options vary by plan.
BUILT FOR DAY-TO-DAY OPERATIONS
Check the connection your service depends on.
01
Watch the right port.
Monitor a specific TCP port on a server or network device, including the ports used by important business services.
02
Surface connection failures.
Receive notifications when a configured port stops accepting connections, becomes unavailable, or times out.
03
Follow response behavior.
Use availability and response-time history to investigate intermittent connection problems and changes over time.
Organize your monitored endpoints.
Watch a walkthrough of the MonitorCTL workspace. Use the player controls to pause or view it full screen.
WHERE IT HELPS
Go one step beyond
host availability.
A host may answer a ping while a service is unavailable. TCP checks help you observe the next layer: whether a connection can be established to the configured port.
Combine port checks with ping monitoring for host connectivity or server monitoring for operating system and hardware context. A connection check does not validate an application’s full response.
Web endpoints
Check TCP connectivity to the ports used by your web services.
Mail and access services
Observe ports used for services such as SMTP, IMAP, and SSH.
Custom applications
Monitor the configured TCP ports your internal applications rely on.
FROM CONFIGURATION TO CONTEXT
Make the first check count.
01 / SETUP
Enter the host and port
Identify the target and TCP port that the service should accept connections on.
02 / SETUP
Choose the vantage point
Use an appropriate monitoring location or private probe with network access.
03 / SETUP
Connect notifications
Choose recipients and review connection availability and timing trends.
KEEP THE RIGHT PEOPLE INFORMED
Bring alerts into your team’s workflow.
Choose email or supported integrations such as Slack, Microsoft Teams, and webhooks. Use maintenance windows for planned work and acknowledgements or comments to add incident context.
Notification channels and workflow features depend on your plan.
A FEW USEFUL ANSWERS
Know what your
check tells you.
Does an open port prove the application works?
No. A successful TCP connection confirms connectivity to the port. It does not validate a complete login, transaction, or application workflow.
Which services can I check?
The service describes TCP checks for ports used by HTTP/HTTPS, SMTP, IMAP, FTP, SSH, and other services. Configure the port appropriate to your target.
Is this a port scanner?
These pages describe monitoring of configured TCP endpoints. Use it for specific hosts and ports you own or are authorized to monitor.
Can I monitor an internal service?
A private probe can provide access to internal targets when configured for your environment. Review the network path, firewall rules, and plan requirements.
BUILD A MORE COMPLETE VIEW
The next useful signal.
Ping monitoring
Reachability & latency
Website monitoring
Web availability
Enterprise monitoring
Private infrastructure
Keep essential
service connections in view.
Choose the monitoring that fits your environment. Start with a free account, or talk with us about your infrastructure.
Website and infrastructure monitoring.
A clearer view of what matters.
A clearer view of what matters.