Is this port open from the internet?
Name a host and port to see whether a connection reaches it from the internet. It runs once with a 10 second cap, the same runner a monitor uses; the result says where it ran.
How to read this
- Connected to
- The address and port the connection actually reached.
- Latency
- How long the connection took to establish.
Questions
Is this a scan?
No. It makes one connection to the port you name; it never probes any other port.
Why is a private address refused?
A check from the internet can say nothing useful about a private or loopback address, and hostnag never dials into anyone's network on purpose.
Related
Read
Ping is not uptime monitoring: what an ICMP reply proves, and why a failure needs a second witnessAn ICMP reply proves a machine is there. A TCP connect on the right port is the first real test, and a failure needs a second place to confirm it.How to monitor an office internet link from both ends, so a filtered port and a dead line read differentlyReach the gateway from the internet and have a device inside check in, so a filtered port, a dead line and a new public address each read differently.
Watch this for good.
Start free