I want to use a total number of 2048 bits and a strong cipher for my
old computer. It used openssl-0.9.7d-1 and RH 7.2 which support only
the Ciphers aes256-cbc,blowfish-cbc,cast128-cbc,aes256-

How I set the sshd_config file?
(Besides setting
ServerKeyBits 2048)
First option:
- do not set the Ciphers at all. i.e. use the default

Second option:
- set to all supported ciphers explicitly:
Ciphers aes256-cbc,blowfish-cbc,cast128-cbc,aes256-cbc

Other option?