Is it possible to log all the ssh events that would have happened with the router?

i have a router and two systems . From one system i have logged into the router through hyper terminal . Will it be possible to log the even in the router and view it from my system if someone else tries to log into the sa开发者_如何学Cme router from the other system using ssh ?

Add the following 2 commands in global config mode

login on-failure log
login on-success log

and now every time someone logs you get:

Dec 24 00:00:00.441 CET: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: hristos] [Source: 10.10.10.10] [localport: 23] at 00:00:00 CET Sat Dec 24 2010

For ssh you'll get port 22, and for unsuccessful login you'll also get a message.