Generic:#

Check for New Versions

toggle on/off and set the frequency of checking for new versions on our update repository; requires outbound Internet access to crushftp.com over HTTPS

Auto IP discovery refresh interval in minutes

toggle on/off and set the frequency of visiting http://checkip.dyndns.org/ to check the public IP of the server.

List zip app

N/A

DMZ only listens for connections from master ServerBeat server

in the specific cluster scenario when multiple Main nodes set up with ServerBeat map to a single DMZ proxy, toggles the DMZ node to only listen to the ServerBeat Master node. Takes effect only on a DMZ instance. This particular use scenario is fit for specific purpose, generally not recommanded.

Restart Command

N/A

Site acknowledgement

N/A

Geo ip access key

the geoIP map on the Dashboard requires an active subscription to https://ipstack.com/. Input here the API key

Date time related:#

MDTM GMT

use GMT instead of server time to set the uplaoded files' time stamp.

Show Date-Time

toggle displaying server time on the admin GUI

Log Date / Time Format

date time format string for log lines' time stamp

WebDAV Timezone Offset

offset the date modified metaparameter of files uploaded over WebDAV

Security related:#

Slow Down Hack Attempt Scans

will incrementally slow down responses to clients that appear to be a robot scanning for writable directories on your server.

Default 'owner' of settings files

applies only under UNIX-like operating systems. By default the daemon will run as root, can change the owner of our config files (chown)

Default 'group' of settings files

same as above, sets the group (chgrp)

Pre-check PGP decrypt on the fly downloads

N/A

Remember invalid usernames for x seconds

sets the time interval to cache usernames attempted with bad password. When using the LDAP Group or other identity integration plugins, this parameter needs always to be set 0

Trusted IP Parts

in case of CrushTunnel or other proxied scenarios where the user's source IP may not match exactly every time, such as different proxy servers getting used and the source IP changes.

FTP specific,global:#

Always do RETR in BINARY

Force download to binary mode always

Always do STOR in BINARY

Force upload to binary always

Allow extended passive and port commands (EPSV/EPRT)

enables the IPv6 extensions for FTP as per rfc2428

Allow local passive IP

toggles inclusion of the local server IPs in the passive IP detection logic.

Allow MLST

enable rfc3659 extensions for FTP

Allow listing subdirectories via LIST

N/A

File transfer mode

default value BINARY, keep it that way, except when simulating some obsolete mainframe class FTP server

RFC Proxy

tries to pass through proxied FTP responses directly instead of interpretation.

Server Start Message

sets a global welcome message

HTTP/S specific,global:#

Disable Referer Cookie

obsolete, to be removed. Superseeded by Referrer-Policy security header, can apply that on our CSP page

HTTP Redirect Base

default value DISABLED, clear when using one of our SSO integration plugins.

SFTP specific, global:#

Allow 0 byte SSH file

workaround to allow touch

Recurse SFTP Delete

workaround to allow recursive delete of directories

File folder access/listings and processing related:#

Allow Directory Caching

memcache dir listings for faster response, reduces CPU usage with the expense of higher memory usage

Use 'Is-la' for directory listings (OSX, Unix, Linux)

use OS native commands to generate dir listings to honor file system level permissions. Slow and CPU intensive. Required when using POSIX options.

Count folder items

toggle counting subfolders when display the number of items in a directory, over the client Webinterface.

Case sensitive list search

toggle between case sensitive directory search over the client Webinterface

Create home folder

workaround for orphaned VFS, will create recursively the physical directories on first upload

Fix Slashes

N/A

Instant chmod

N/A

Sort Listings

toggles displaying a dir listing in ascending alphabetical order. By default, we'll display the listing in natural order, as the storage backend presents it to us.

POSIX

for user uploads and files processed by Jobs, toggles the default UNIX file system level owner and group same as set in "Default 'owner' of settings files" and "Default 'group' of settings files: ". Can be overridden by per user POSIX.

Zip Compression Level

sets the compression level for zip downloads

Zip64

toggles support for Zip64 compression for large files. Default zip is limited to 4GB per block.

Zip64 Always

forces Zip64 for all zip downloads.

Disable MDTM modifications

disallow the uploading client to set custom date modified. Applies to all transport protocols.

Allow '.zipstream' Expansion

Zip files with .zipstream extension will automatically be unarchived on upload.

Delete partial uploads

complements the per user temporary extension feature. If both enabled, the server will cleanup partial files after an interrupted upload.

Allow Magic '.filetree' Download

N/A

Unsafe filename characters

URL-unsafe special characters, like /,\,*,%,: will cause the server to be unable to list uplaoded files, or not to save to disk at all. Can define a custom list of characters to be automatically replaced with a safe special character, like - or _

Replace unsafe filename characters with

define the replacement special character.

User accounts related:#

Default privs for new VFS items in User Manager

can change the default read only VFS permissions . Accepted values:

(read) - Download (write) - Upload (view) - List directory content (delete) - Delete file (deletedir) - Delete folder (makedir) - Create folder (rename) - Rename file (resume) - Resume file transfer (share) - Allow Share/Publish (slideshow) - Allow playback of image files as slide show in the Webinterface (invisible) - Hide folder with all of it's contents (replicate) - In case of a cluster with file replication, toggle replication (locked) - Prevent changes on that directory level

Track Last Logins

keep the most recent login date time stored by the user accounts database. Can cause user corruption on slow disks.

Keep x backups of users in User Manager

the amount of backup copies to store of each user account.

Force Lowercase Usernames

store user names in all lowercase by the user accounts database.

Performance related:#

Allow re-use in Email Events

allows you to have multiple email Events that all include the same notifications on files. Obsolete feature that complements the old email template based Events. We recommand CrushTask Email events, with chained Email tasks instead.

Run Events Asynchronously

Async events run on a separate thread from the event hook. This option forces all events set to Auto to run async. Can be overridden on a per user basis.

Maximum jobs to scan for job monitor

limits the number of jobs history displayed on teh Jobs page "Active Jobs" panel.

Max Threads

limits the global server thread pool size.

Max items before CrushFTP tries to trigger an alert and logs errors about giant directories which may cause memory issues

operating on huge directory structures is memory intensive, can set a threshold to warn the user

Amazon S3 storage protocol specific:#

Defaults are fine, do not change these, unless specifically recommanded by us.

Max Download Buffer

N/A

Download Threads

N/A

Upload Buffer

N/A

Upload Threads

N/A

Download Buffer

N/A

Replicated

N/A

Disable uploads in progress and resume

N/A

Extra parameters:
#

Only available in the prefs.XML (Placed in CrushFTP install folder) file.
XML tag values:

 keywords_add_upload_by_on_upload -> If true, it appends keywords with the username who uploaded the file. (Example: Uploaded by: crushadmin)
 
 alt_logo_ignore_protocols - Related with "display_alt_logo" If "display_alt_logo" is true, it ignores the provided remote protocols. (Default value:s3,azure,gdrive,gstorage,onedrive,sharepoint,box,sharepoint2,b2,dropbox)