1. Log onto your system using console.

2. Check whether the ssh daemon and the telnet deamon is running.

a. Using the svcs - a |grep ssh and svcs -a |grep telnet or
using ps -ef command.

b. Additionally Check these serivces are listening to the
routable IP within the subnet and right port using command netstat -anP tcp |grep
22 and netstat -anP tcp |grep 23.If not bound configure accordingly.

c. If the services are not running then start the services
using `svcadm` command. And repeat the above two steps to confirm.

3. If already running Check the firewall setting and configure firewall
accordingly.

If there are no dependencies then you can simply enable telnet and ssh
svcadm enable telnet and svcadm enable ssh

If there are dependencies you first enable those services and then you have to enable these two services