Starting and stopping sshd

By default, sshd is started in POSIX as follows:

/etc/init.d/TCP-IP-SV.openssh start

/etc/init.d/TCP-IP-SV.openssh stop

In this startup script the sshd call is issued with the parameter -f <config_file>. This specifies the configuration file from which the sshd configuration data is read. After startup, sshd waits at port 22 for connection requests from the OpenSSH client.

Alternatively you start sshd under SYSROOT with the following command:

sshd [-46DdeiqTt] [-b bits] [-C connection_spec] [-c host_cert_file] 
     [-E log_file] [-f config_file] [-g login_grace_time]
     [-h host_key_file] [-k key_gen_time] [-o option] [-p port]
     [-u len] 

A detailed description of the operands is provided in the OpenSSH man pages.

For each incoming connection request sshd generates a new child process. These sshd child processes implement key exchange, encryption, authentication, command execution and data exchange.