[email protected] messages

[gokhankocak]

Hello,

We are new to Teleport and this is the first time we installed it.
I want to know what those debug messages are.
Why teleport communicates with [email protected] ?

teleport version:
Teleport v16.4.10 git:v16.4.10-0-g7bf1e95 go1.22.10

Debug messages:

{"caller":"regular/sshserver.go:2142","component":null,"level":"debug","message":"Replied to "[email protected]"","timestamp":"2025-02-18T13:02:11Z"}

{"caller":"sshutils/server.go:636","component":"ssh:node","level":"debug","message":"Received out-of-band request: \u0026{Type:[email protected] WantReply:true Payload:[] ch:\u003cnil\u003e mux:0xc0007b0c40}.","timestamp":"2025-02-18T13:02:14Z"}

[webvictim]

This is because your SSH client is sending keepalive messages to check whether the server is still responding. The client sends a "ping", Teleport replies with a "pong". Everything is working as expected.

These messages are logged at debug level to avoid spamming the log under normal circumstances (i.e. info level)

[zmb3]

It's worth noting that [email protected] is an identifier for this particular message. Teleport is not communicating with openssh.com.