Port 21 Non-FTP Traffic Detection

Info Nessus Network Monitor Plugin ID 8076


The remote client appears to be tunneling data over port 21 TCP (FTP)


The remote host is running non-FTP traffic over port 21. Port 21 is a port that is typically allowed outbound access via a firewall. Because of this, some users may attempt to pass non-FTP traffic over port 21.


Ensure that this application is authorized for your network

Plugin Details

Severity: Info

ID: 8076

File Name: 8076.prm

Family: Policy

Published: 2013/12/21

Modified: 2015/06/01

Risk Information

Risk Factor: Info