| SSH1
| SSH2
| OpenSSH
| Option
| Meaning
|
| -4
| Use IPv4 addresses only
|
|
| -6
| Use IPv6 addresses only
|
|
|
| -b bits
| # of bits in server key
|
|
|
| -d
| Verbose mode
|
|
| -d level
| Enable debug messages
|
|
| -d "module=level"
| Enable debug messages per module
|
|
|
|
| -f filename
| Use other configuration file
|
|
|
|
| -g time
| Set login grace time
|
|
|
|
| -h filename
| Use other host key file
|
|
|
|
| -i
| Use inetd for invocation
|
|
|
| -k time
| Key regeneration interval
|
|
| -o "keyword value"
| Set configuration keyword
|
|
|
|
| -p port
| Select TCP port number
|
|
|
|
| -q
| Quiet mode
|
|
| -Q
| Quiet if RSA support is missing
|
|
| -v
| Verbose mode
|
|
| -V
| Print version number
|
|
| -V id
| OpenSSH SSH2 compatibility mode |