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тАО07-09-2007 12:16 PM
тАО07-09-2007 12:16 PM
What are your thoughts
Solved! Go to Solution.
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тАО07-09-2007 01:32 PM
тАО07-09-2007 01:32 PM
SolutionSFTP works by starting an SSH session, then requesting SSH to start the SFTP subsystem. The image that is run for the subsystem is defined in the configuration file SSHD2_CONFIG.
Comment out the subsystem definitions from the configuration file and the subsystems will not be available.
On VMS SCP is just a different way of doing a single SFTP copy line. On Unix systems that run OpenSSH (the most popular), SCP is a separate program that basically works like RCP.
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тАО07-09-2007 01:45 PM
тАО07-09-2007 01:45 PM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
isconnected; connection lost (Connection closed.).
Warning: child process (/sys$system/tcpip$ssh_ssh2) exited with code 27.
%TCPIP-E-SSH_FC_ERROR, undetermined error within sshfilecopy
This is a good start.
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тАО07-10-2007 02:33 AM
тАО07-10-2007 02:33 AM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
I don't have the data anymore but copying big files with scp instead of ftp consumes a lot of CPU and could delay the transfer when done on a high speed interface (or delay applications running on the node).
On our Suns theys need to copy db dumps with scp ...
Wim
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тАО07-10-2007 02:41 AM
тАО07-10-2007 02:41 AM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
Executing "rsh show time" needs 0.2 seconds while ssh needs 0.7 second (on old GS160).
Wim
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тАО07-10-2007 04:43 AM
тАО07-10-2007 04:43 AM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
http://64.223.189.234/node/347
sftp and scp do run just fine, albeit rather more processor resources are involved.
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тАО07-10-2007 06:05 AM
тАО07-10-2007 06:05 AM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
There may be restrictions on the files that can be copied with ssh
Purely Personal Opinion
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тАО07-10-2007 12:12 PM
тАО07-10-2007 12:12 PM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
We are running VMS 7.3-2 and UCX 5.4 ECO 5.
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тАО07-10-2007 06:49 PM
тАО07-10-2007 06:49 PM
Re: Implications of replacing Telnet with SSH: SFTP, SCP
I scp2 sysdump of 728.000 blocks.
Source node and destination node (both GS160) had 45% of cpu used for SSH processes.
Speed was 2.5 MB per sec. It took 2min30.
Same operation with copy used only 20% cpu and took 1m06.
Only did the test once on a machine in use.
Wim