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Home > Success Center > Serv-U Managed File Transfer & Serv-U FTP Server > Serv-U File Server Administrator Guide > Server overview > Server settings

Server settings

Created by Anthony.Rinaldi_ret, last modified by Anthony.Rinaldi_ret on Jul 20, 2016

Views: 17 Votes: 0 Revisions: 2

On the Server Limits & Settings > Settings pages, you can configure basic server settings that affect performance, security, and network connectivity. To configure a setting, type the value you want in the appropriate area, and then click Save. This topic contains detailed information about the settings that you can configure.

Connection settings

Block users who connect more than 'x' times within 'y' seconds for 'z' minutes

Also known as anti-hammering, enabling this option is a method of preventing brute force password guessing systems from using dictionary style attacks to locate a valid password for a user account. Using strong, complex passwords defeats most dictionary attacks. However, enabling this option ensures that Serv-U does not waste time processing connections from these illegitimate sources. When configuring this option, ensure that there is some room for legitimate users to correct an incorrect password before they are blocked.

When enabled, this option temporarily blocks IP addresses for the specified number of minutes that fail to successfully login after the specified number of attempts within the specified number of seconds. IP addresses blocked in this way can be viewed in the appropriate IP access rules tab. A successful login resets the counter that is tracking login attempts.

Hide server information from SSH identity

After a successful SSH login, the server sends identification information to the client. Normally, this information includes the server name and version number. Enable this option to prevent the information from being given to the client.

Default Web Client

Specifies whether the Web Client, Web Client Pro, or FTP Voyager JV should be used by all HTTP clients by default. The third, default option is to prompt the users for the client they want to use instead. This option is also available at the group and user level.

Network settings

Auto-configure firewall through UPnP (Windows Only)

When enabled, Serv-U automatically configures the necessary port forwards in your UPnP-enabled network device (usually a router) so that the file server is accessible from outside your network. This is particularly useful in enabling PASV mode FTP data transfers.

Packet time-out

Specifies the timeout, in seconds, for a TCP packet transfer. Only very slow networks experiencing high levels of latency may need to change this value from the default 300 seconds.

PASV Port Range

Specifies the inclusive range of ports that Serv-U should use for PASV mode data transfers. Serv-U normally allows the operating system to assign it a random port number when opening a socket for a PASV mode data transfer. This attribute accommodates routers or firewalls that need to know a specific range of ports in advance by restricting the PASV port range of Serv-U to a known range. A range of 10 ports is sufficient for the busiest of file servers.

Some NAT routers work differently and may require a larger port range. If Serv-U and clients have troubles listing directories or transferring files, try increasing the port range here and on your router.

Other settings

Ratio Free Files

Files listed by opening the Ratio Free Files button are exempt from transfer ratio limitations on file transfers. Ratio free files specified at the server or domain level are inherited by all their users accounts. For more information, see Transfer ratios and quotas.

Change Admin Password

The Serv-U Management Console can be password protected when it is launched by double-clicking on the Serv-U system tray icon. When the Management Console is running in this way, the option to change the password becomes available. By default, there is no admin password.

Last modified
09:06, 20 Jul 2016

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