ZyXEL Communications ZyXEL ZyWALL 5 - Manual (Page 498)

ZyWALL 5 User’s Guide
Chapter 38 Firmware and Configuration File Maintenance 497
4 The IP you entered in the Secured Client IP field in menu 24.11 does not match the
client IP. If it does not match, the ZyWALL will disconnect the Telnet session
immediately.
5 You have an SMT console session running.
38.3.6 Backup Configuration Using TFTP
The ZyWALL supports the up/downloading of the firmware and the configuration file using
TFTP (Trivial File Transfer Protocol) over LAN. Although TFTP should work over WAN as
well, it is not recommended.
To use TFTP, your computer must have both telnet and TFTP clients. To backup the
configuration file, follow the procedure shown next.
1 Use telnet from your computer to connect to the ZyWALL and log in. Because TFTP
does not have any security checks, the ZyWALL records the IP address of the telnet
client and accepts TFTP requests only from this address.
2 Put the SMT in command interpreter (CI) mode by entering 8 in Menu 24 – System
Maintenance.
3 Enter command “sys stdio 0” to disable the SMT timeout, so the TFTP transfer will not
be interrupted. Enter command “sys stdio 5” to restore the five-minute SMT timeout
(default) when the file transfer is complete.
4 Launch the TFTP client on your computer and connect to the ZyWALL. Set the transfer
mode to binary before starting data transfer.
5 Use the TFTP client (see the example below) to transfer files between the ZyWALL and
the computer. The file name for the configuration file is “rom-0” (rom-zero, not capital
o).
Note that the telnet connection must be active and the SMT in CI mode before and during the
TFTP transfer. For details on TFTP commands (see following example), please consult the
documentation of your TFTP client program. For UNIX, use “get” to transfer from the
ZyWALL to the computer and “binary” to set binary transfer mode.
38.3.7 TFTP Command Example
The following is an example TFTP command:
tftp [-i] host get rom-0 config.rom
Where “i” specifies binary image transfer mode (use this mode when transferring binary files),
“host” is the ZyWALL IP address, “get” transfers the file source on the ZyWALL (rom-0,
name of the configuration file on the ZyWALL) to the file destination on the computer and
renames it config.rom.