HP VPN Firewall Appliances System Management and Maintenance Command Reference

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• aes256: Specifies the encryption algorithm aes256-cbc.
• des: Specifies the encryption algorithm des-cbc.
prefer-ctos-hmac: Specifies the preferred client-to-server HMAC algorithm. The default is sha1-96.
• md5: Specifies the HMAC algorithm hmac-md5.
• md5-96: Specifies the HMAC algorithm hmac-md5-96.
• sha1: Specifies the HMAC algorithm hmac-sha1.
• sha1-96: Specifies the HMAC algorithm hmac-sha1-96.
prefer-kex: Specifies the preferred key exchange algorithm. The default is dh-group-exchange in
non-FIPS mode, and is dh-group14 in FIPS mode.
• dh-group-exchange: Specifies the key exchange algorithm diffie-hellman-group-exchange-sha1.
• dh-group1: Specifies the key exchange algorithm diffie-hellman-group1-sha1.
• dh-group14: Specifies the key exchange algorithm diffie-hellman-group14-sha1.
prefer-stoc-cipher: Specifies the preferred server-to-client encryption algorithm. The default is aes128.
prefer-stoc-hmac: Specifies the preferred server-to-client HMAC algorithm. The default is sha1-96.
Usage guidelines
When the server adopts publickey authentication to authenticate a client, the client must get the local
private key for digital signature. In non-FIPS mode, because the publickey authentication uses either RSA
or DSA algorithm, you must specify the public key algorithm of the client (by using the identity-key
keyword) in order to get the correct local private key.
In non-FIPS mode, the default algorithms are as follows:
• The public key algorithm is dsa.
• The preferred client-to-server encryption algorithm is aes128.
• The preferred client-to-server HMAC algorithm is sha1-96.
• The preferred key exchange algorithm is dh-group-exchange.
• The preferred server-to-client encryption algorithm is aes128.
• The preferred server-to-client HMAC algorithm is sha1-96.
In FIPS mode, the default algorithms are as follows:
• The public key algorithm is rsa.
• The preferred client-to-server encryption algorithm is aes128.
• The preferred client-to-server HMAC algorithm is sha1-96.
• The preferred key exchange algorithm is dh-group14.
• The preferred server-to-client encryption algorithm is aes128.
• The preferred server-to-client HMAC algorithm is sha1-96.
Examples
# Connect to SFTP server 10.1.1.2, using the following connection scheme:
• The preferred key exchange algorithm is dh-group1.
• The preferred server-to-client encryption algorithm is aes128.
• The preferred client-to-server HMAC algorithm is md5.
• The preferred server-to-client HMAC algorithm from is sha1-96.