The ‘Flow control’ box allows you to choose what type of flow control checking is used on the serial line. The settings are: •‘None’: no flow control is done. Data may be lost if either side attempts to send faster than the serial line permits.
•‘XON/XOFF’: flow control is done by sending XON and XOFF characters within the data stream.
•‘RTS/CTS’: flow control is done using the RTS and CTS wires on the serial line.
•‘DSR/DTR’: flow control is done using the DSR and DTR wires on the serial line.
4.28 Storing configuration in a file PuTTY does not currently support storing its configuration in a file instead of the Registry. However, you can work around this with a couple of batch files. You will need a file called (say) PUTTY.BAT which imports the contents of a file into the Registry, then runs PuTTY, exports the contents of the Registry back into the file, and deletes the Registry entries. This can all be done using the Regedit command line options, so it's all automatic. Here is what you need in PUTTY.BAT:
@ECHO OFF
regedit /s putty.reg
regedit /s puttyrnd.reg
start /w putty.exe
regedit /ea new.reg HKEY_CURRENT_USER\Software\SimonTatham\PuTTY
copy new.reg putty.reg
del new.reg
regedit /s puttydel.reg
This batch file needs two auxiliary files: PUTTYRND.REG which sets up an initial safe location for the PUTTY.RND random seed file, and PUTTYDEL.REG which destroys everything in the Registry once it's been successfully saved back to the file.
Here is PUTTYDEL.REG:
REGEDIT4
[-HKEY_CURRENT_USER\Software\SimonTatham\PuTTY]
Here is an example PUTTYRND.REG file:
REGEDIT4
[HKEY_CURRENT_USER\Software\SimonTatham\PuTTY]
"RandSeedFile"="a:\\putty.rnd"
You should replace a:\putty.rnd with the location where you want to store your random number data. If the aim is to carry around PuTTY and its settings on one USB stick, you probably want to store it on the USB stick.
Chapter 5: Using PSCP to transfer files securely PSCP, the PuTTY Secure Copy client, is a tool for transferring files securely between computers using an SSH connection. If you have an SSH-2 server, you might prefer PSFTP (see chapter 6
) for interactive use. PSFTP does not in general work with SSH-1 servers, however.