Check that any TCP service accepts connections on its port, and optionally send a string and verify the reply. From databases to game servers, if it listens on TCP you can watch it.
Not every service speaks HTTP. Databases, message brokers, custom daemons and game servers all listen on raw TCP ports. If the port stops accepting connections, the service is effectively down.
A TCP monitor tests exactly that, and can go one step further: send a string and require a specific reply to prove the service is actually answering, not only listening.
Every check is stored in a full log, so you can see exactly when and how something changed.
Confirms the port accepts a connection.
Send a string and require a string back for a deeper check.
PostgreSQL, Redis, MQTT, SMTP, custom protocols.
Test from different regions and networks.
From sign-up to your first alert in a few minutes.
Any TCP service.
Prove the service answers correctly.
Get notified on failed connections.
Sensible defaults get you started; every option below can be tuned per monitor.
| Setting | What it does |
|---|---|
| Domain / IP | The server to monitor. |
| Port | The TCP port. |
| String to send | Data sent after connecting. |
| String to expect | Text the response must contain. |
| Frequency | How often the check runs: 1 to 120 minutes. The Free plan checks from every 15 minutes; Premium from every minute. |
| Locations | Run the check from one or several of 9 locations: Spain, France, United Kingdom, USA (New York, Los Angeles), Australia, Singapore, Japan and Germany. |
| Notifications | Pick any of your pre-configured alert channels: e-mail, SMS, Telegram, Slack, Messenger, voice call, webhooks and more. |
| Status page | Make the statistics of this monitor public or private. |
| Tags | Group monitors with tags to keep large accounts tidy. |
| IP version | Force IPv4, IPv6, or let Upzilla use whichever is available. |
PostgreSQL, Redis, MongoDB and more.
RabbitMQ, MQTT and Kafka ports.
Check that players can connect.
Anything with a TCP listener.
Create as many notification methods as you like, even on the free plan.
Any TCP port. Our port numbers list helps you find the right one for a service.
It requires the server’s reply to contain specific text, which proves the service, not just the port, is working.
Use HTTP for web endpoints. Use TCP for everything else that speaks a raw TCP protocol.
Yes, within the 10 free monitors.
No card required. 10 monitors of any type, free.