Back Button Problem in Web Applications

After user logout from web application user can access the application using back button. and without authorization.How to solve this problm?
[155 byte] By [ysmuleya] at [2007-11-27 9:23:00]
# 1
In logout jsp invalidate the session. This will work only if u are maintaining the session in ur application.request.getSession.invalidate();
niraj.tha at 2007-7-12 22:17:49 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...
# 2
And add headers to prohibit the user agent to cache the pages.
BalusCa at 2007-7-12 22:17:49 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...
# 3
after log out just disable back button......<script language="JavaScript" type="text/JavaScript">javascript:window.history.forward(-1);</script> add this code head part of the log out page....i think its help...
ravi-kumar-123a at 2007-7-12 22:17:49 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...