File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Servlets and the fly likes firewall Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Servlets
Bookmark "firewall" Watch "firewall" New topic


shabbir zakir
Ranch Hand

Joined: Nov 12, 2000
Posts: 183
What is the meaning of Firewall?
Shama Khan
Ranch Hand

Joined: Aug 14, 2000
Posts: 185
A firewall is a program/server that's placed between two servers to limit access. The following URL talks about firewalls from the world wide web point of view. But you can implement firewalls for other reasons.
Let's say you are a wholesaler and have a server through which you allow your customers to gain access to your order entry/status checking application. On that server you might only have software to verify the identity of user and launch the actual application over the firewall. So the actuall application is on a server internal to the company (the other side of the firewall) and is being implemented on the public side of the firewall. This limits the customer or hackers from messing around with your application.
Of course, some hackers can break through the firewall. Then you put up more defense - bastion hosts.
You may learn more at the following url.

shabbir zakir
Ranch Hand

Joined: Nov 12, 2000
Posts: 183
Thanks Shama a lot
I agree. Here's the link:
subject: firewall
It's not a secret anymore!