SSH Reference Manual

-B <buffer size>
Specify the size of the buffer that sftp uses when transferring files. Larger buffers require fewer round trips at the cost of
higher memory consumption. The default is 29696 bytes (29kB). The maximum buffer size is 57344 bytes (56kB).
The transfer buffer size can also be set by specifying a PARAM/environment variable SFTPBUFFERSIZE.
-C
Requests compression of the transfer data. The compression algorithm is the same used by gzip. Compression is
desirable on slow connections, but will only slow down the transfer on fast networks.
-o <ssh2 option>
Allows to pass an option for the ssh session to the SSH2 process
The following options are supported:
• BINDADDRESS=address
The local address used for outgoing connections. Useful if the SSH2 process is configured with “any address”
for parameter INTERFACEOUT or multiple IP addresses are configured in INTERFACEOUT, the TCP/IP
process is configured with more than one subnet and a specific local address needs to be used (e.g. due to
firewall configuration restrictions).
• IDENTITY=keyname
Use this option to select a specific KEY for authentication to the remote system. By default all KEYs that you
have generated using the SSHCOM GENERATE KEY command will be presented to the remote host for
publickey authentication. However, some servers will deny authentication after a maximum number of
inacceptable keys are presented, which can create a problem if you have many keys. To overcome this problem,
use the IDENTITY option to present only the key that has been advertised as authorized key to the target server.
• PORT=port
The port to connect to on the remote host.
• COMPRESSION=TRUE|FALSE
Specify weather data compression should be enabled on the SSH session. This option has the same effect as the
–C command line option.
• CIPHERS=ciphers
Specify a comma-separated list of ciphers for encrypting the session.
• MACS=macs
Specify a comma-separated list of MAC algorithms.
• USER=user
Specify the user to log in as on the remote machine. This option has the same effect as specifying the user
runtime parameter.
• AllowedAuthentications=methods
Specify the authentication methods that are allowed for user authentication. The value is a comma separated list
of method names (without any spaces). See SSH2 parameter CLIENTALLOWEDAUTHENTICATIONS for
the possibility to restrict the sftp clients' authentication methods.
A typical usage of this option is to connect to an SSH2 daemon is running on a different port than the standard port 22:
> sftposs –oPort=2222 -S '$tba01' burgt@10.0.0.201
Connecting to 10.0.0.201...
sftp>
-R <num requests>
228 • SSH and SFTP Client Reference HP NonStop SSH Reference Manual