Field

Description

Maximum connected users

Specify a non-zero value here to limit the number of simultaneous connections to this FTP site.

This is useful if you want to limit bandwidth usage.

Maximum connections from single IP address

Specify a non-zero value here to limit the number of connections from a single IP address.

Passive port range from/to

The IceWarp FTP Server communicates in both Active and Passive mode.

For Passive mode communication the Server needs to use non-standard ports to communicate, these are specified here.

Specify the low and high value of a range of ports the server can use for Passive mode connections.

NOTE: These ports should be opened on you firewall/router.

You can read more information about how active and passive modes work here – FTP Modes.

Passive mode external IP address (If not supported by firewall)

Here you can specify an IP address to use for passive mode transfers. Useful and important when the FTP service is running behind a firewall or proxy.

Passive mode local network (Local IP address will be used)

Here you can specify an IP pattern to use for passive mode transfers in LAN.

Example – see the figure above.

Require OTP authentication (S/KEY password encryption)

In compliance with RFC-2289 server requests One Time Password authentication login. Enable this checkbox to increase your server's security, but remember some FTP Clients do not support this feature.

Welcome message

Specify a greeting here. This will be used to greet any client accessing the IceWarp FTP Server.