905U-G Wireless Gateway
User Manual
Page 153
©September 2004
Appendix 2
IT Functionality
905U-G-ET1 Ethernet module only
Filesystem
The filesystem is a fixed-size storage area with a hierarchical directory structure. Any user-
or application data can be stored in files within the filesystem. Files can be grouped in
directories for increased readability.
The filesystem features two security levels. Depending on security level, different users
can have access to different files and directories. The filesystem can be accessed via FTP,
Telnet, and HTTP.
•
Case Sensitivity
The file system is case sensitive. This means that the file ‘ELPRO.txt’ is not identical
to the file ‘elpro.TXT’.
•
Filename / Pathname length
Filenames can be a maximum of 48 characters long. Pathnames can be 256 characters
in total, filename included.
•
File size
File size is not restricted. However, the size cannot exceed the space available in the
file system.
•
Free space
Approximately 1.4MB non-volatile (FLASH).
Security
The file system features two security levels; Admin and Normal. Security level is set at a
per user basis, or globally via setting Admin Mode in configuration software Ethernet
Settings.
•
Normal Mode
This mode is recommended for normal operation, so that web pages and other
settings are protected from FTP and Telnet access. In this mode, the FTP and Telnet
servers are enabled
only
if there is a subdirectory called “\user”. When a normal
user connects via FTP or Telnet, this directory will be their root directory. The user
will not be able to access files outside this directory and it’s subdirectories.
If user/password protection for FTP and Telnet is required in normal mode, a file
called “sys_pswd.cfg” must be placed in the directory “\user\pswd\”. Files in this
directory cannot be accessed from a web browser. If Admin Mode has not been
enabled by configuration software and a valid admin password file (See “System
Files”) is found, the module will operate in this mode (i.e. an admin password file
with at least one entry
must
exist,
and
the “\user” directory
must
exist to enable this
mode).