Users Guide

Configuring the SSH Server Key Exchange Algorithm
To configure the key exchange algorithm for the SSH server, use the ip ssh server kex key-exchange-algorithm command
in CONFIGURATION mode.
key-exchange-algorithm : Enter a space-delimited list of key exchange algorithms that will be used by the SSH server.
The following key exchange algorithms are available:
• diffie-hellman-group-exchange-sha1
• diffie-hellman-group1-sha1
• diffie-hellman-group14-sha1
The default key exchange algorithms are the following:
• diffie-hellman-group-exchange-sha1
• diffie-hellman-group1-sha1
• diffie-hellman-group14-sha1
When FIPS is enabled, the default is diffie-hellman-group14-sha1.
Example of Configuring a Key Exchange Algorithm
The following example shows you how to configure a key exchange algorithm.
Dell(conf)# ip ssh server kex diffie-hellman-group-exchange-sha1 diffie-hellman-group14-sha1
Configuring the HMAC Algorithm for the SSH Server
To configure the HMAC algorithm for the SSH server, use the ip ssh server mac hmac-algorithm command in
CONFIGURATION mode.
hmac-algorithm: Enter a space-delimited list of keyed-hash message authentication code (HMAC) algorithms supported by the SSH
server.
The following HMAC algorithms are available:
• hmac-md5
• hmac-md5-96
• hmac-sha1
• hmac-sha1-96
• hmac-sha2-256
• hmac-sha2-256-96
The default HMAC algorithms are the following:
• hmac-md5
• hmac-md5-96
• hmac-sha1
• hmac-sha1-96
• hmac-sha2-256
• hmac-sha2-256-96
When FIPS is enabled, the default HMAC algorithm is hmac-sha1-96.
Example of Configuring a HMAC Algorithm
The following example shows you how to configure a HMAC algorithm list.
Dell(conf)# ip ssh server mac hmac-sha1-96
Configuring the SSH Server Cipher List
To configure the cipher list supported by the SSH server, use the ip ssh server cipher cipher-list command in CONFIGURATION
mode.
cipher-list-: Enter a space-delimited list of ciphers the SSH server will support.
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