Alcatel-Lucent 7705 SAR, System Management Manual

Page: 133 / 356

Security
7705 SAR OS System Management Guide 133
version
Syntax version ssh-version
no version
Context config>system>security>ssh
Description
This command specifies the SSH protocol version that will be supported by the SSH server. The server
may be configured as Secure Shell Version 1 (SSH1), Version 2 (SSH2) or both. SSH1 and SSH2 are
different protocols and encrypt at different parts of the packets. SSH1 uses the server as well as host
keys to authenticate systems, whereas SSH2 only uses host keys. SSH2 does not use the same
networking implementation that SSH1 does and is considered a more secure, efficient, and portable
version of SSH.
Parameters
ssh-version — specifies the SSH version
Values
1 — specifies that the SSH server will only accept connections
from clients supporting SSH protocol version 1
2 — specifies that the SSH server will only accept connections
from clients supporting SSH protocol version 2
1-2 — specifies that the SSH server will accept connections from
clients supporting either SSH protocol version 1, or SSH protocol
version 2, or both
Default
2