User's Manual

CH1 User Manual
11/13/19
14
4.4.4 Port Filtering
 Applications
The default applications have “Email (POP3, IMAP, SMTP)”, “FTP”, “HTTP”,
“HTTPS” and “Telnet”. If port filtering is on, only traffic from selected applications
can access the Internet. Note that DNS is always allowed.
 Custom Applications
Click “Add a Custom Application” to define your own applications, and then turn
them on or off as needed. To define an application, you need to know the outgoing
ports used by application.