xxxxxxxxxx
ASA(config)# enable password system@123
xxxxxxxxxx
ASA(config)# crypto key generate rsa modulus 1024
INFO: The name for the keys will be:
Keypair generation process begin. Please wait
xxxxxxxxxx
ASA(config)# ssh 192.168.1.0 255.255.255.0 trust
ASA(config)# ssh 172.16.1.0 255.255.255.0 trust