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TCP check
TCP Check
Verify availability and response of a server on a specific port using the TCP protocol.
What does the TCP check do?
It verifies availability and response on a specific port using TCP. Key for monitoring apps and services on a given port (web servers, databases) and also watches security and certificate trust.
Why monitor TCP?
TCP is a fundamental protocol most services depend on. Regular checks keep availability, performance and security in shape.
- Ensures server availability and performance.
- Detects connection or response issues.
- Maintains a high level of security and trust.
What do the individual fields mean and why do they matter?
9 fields1
TCP server
What it meansAddress of the server to monitor (e.g. tcp.example.com).
Why it mattersIdentifies the server running the app or service.
2
Security
What it meansSecurity type the server uses (e.g. TLS).
Why it mattersProtects communication against unauthorized access.
3
Port
What it meansPort the service uses (e.g. 443 for HTTPS, 3306 for MySQL).
Why it mattersThe correct port ensures access to the required service.
4
IP protocol: IPv4/IPv6
What it meansIP address type the server is reachable on.
Why it mattersEnsures compatibility with older and modern networks.
5
Connection timeout
What it meansMaximum time to establish the connection.
Why it mattersDetects slow or unavailable servers.
6
Slow (ms)
What it meansResponse threshold above which the server is slow.
Why it mattersWatches performance and reveals speed issues.
7
Certificate warning (days)
What it meansDays before SSL/TLS expiration to notify.
Why it mattersEnsures renewal in time so the server stays trusted.
8
Check certificate expiration
What it meansVerifies SSL/TLS certificate validity.
Why it mattersPrevents untrusted or expired certificate issues.
9
Check certificate trust
What it meansTests if a trusted authority issued it.
Why it mattersProtects against forged certificates.
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