Admin Guide

Table Of Contents
Setting SSH configuration parameters
Configure Secure Shell version 2 (SSHv2) parameters to support public and private key encryption
connections. The VSP switch does not support SSHv1.
Note:
Different releases can support different DSA host key, RSA host key, and DSA user key sizes. If
you need to upgrade or downgrade to an earlier release that does not support the same key
size, you must delete the all of the keys from the .ssh directory and generate new keys for SSH.
For more information about supported software, see Release Notes for VSP Operating System
Software, NN47227-401.
About this task
You must enable SSH globally before you can generate SSH DSA user keys.
Procedure
1. Enter Global Configuration mode:
enable
configure terminal
2. Configure the authentication type to use:
ssh authentication-type {[aead-aes-128-gcm-ssh] [aead-aes-256-gcm-
ssh] [hmac-sha1] [hmac-sha2-256]}
3. Enable DSA authentication:
ssh dsa-auth
4. Generate a new DSA host key:
ssh dsa-host-key [<1024–1024>]
5. Generate a new SSH DSA user key:
ssh dsa-user-key WORD<1–15> [size [<1024–1024>]]
6. Configure the type of encryption to use:
ssh encryption-type {[3des-cbc][aead-aes-128-gcm-ssh ][aead-aes-256-
gcm-ssh] [aes128-cbc][aes128-ctr][aes192-cbc][aes192-ctr][aes256-
cbc][aes256-ctr][blowfish-cbc] [rijndael128-cbc][rijndael192-cbc]}
7. Configure the key-exchange to use:
ssh key-exchange-method {[diffie-hellman-group1-sha1][diffie-
hellman-group14-sha1]}
8. Configure the maximum number of SSH sessions:
ssh max-sessions <0-8>
Secure Shell configuration using ACLI
January 2017 Administering Avaya VSP 7200 Series and 8000 Series 161
Comments on this document? infodev@avaya.com