What it checks
Whether the Telnet (23) or FTP (21) port accepts a connection from the internet.
A pass means: No Telnet or FTP services accept connections from the internet.
Possible findings
Unencrypted remote service reachable
Severity: HighConfidence: Medium confidenceKind: Security issue
What we found
A Telnet or FTP service accepted a connection from the internet.
Why it matters
Telnet and FTP send passwords and data unencrypted, so anyone on the network path can read them.
How to fix it
Replace Telnet with SSH and FTP with SFTP or FTPS, and close the old ports.