These firewalls act as a buffer to verify the source and destination of transmissions from outside networks. This password can be changed by you at anytime. Therefore, it is important that you protect your password and not allow anyone to gain knowledge of it. About Cookies Cookies are a very useful tool in maintaining state variables on the Web. Cookies can store database information, custom page settings, security clearance information, requests being worked on, or just about anything that would make a site interactive and customizable.
Some cookies have expiration dates.
When a cookie expires, your browser will simply erase it from your hard drive. Depending on where it came from, a cookie may expire tomorrow, next week, or next year. A cookie that doesn't contain an expiration date will only last as long as your browser stays open. When you close your browser, all session cookies silently disappear. There are different ways of determining if cookies are turned on, depending on which browser version you are using.