Solved

firewall?

Posted on 1999-01-20
2
208 Views
Last Modified: 2010-04-27
Hey guys
what exactly is a firewall?
0
Comment
Question by:bester
2 Comments
 

Expert Comment

by:ceb102298
ID: 1020782
A firewall is a protection for internet. The people can't enter in your network if you have a firewall.
0
 
LVL 12

Accepted Solution

by:
mark2150 earned 0 total points
ID: 1020783
Firewalls also can provide IP filtering. You can control where your users go using the firewall. You can set it up permissive or restrictive. Permissive allows access to all sites except ones you list. Restrictive denys access to all except ones listed.

TCP/IP allows you to set up a communications link between two IP addresses. A firewall only allows connections to be formed from the inside out and blocks attempts at connections being established from the outside in.

Firewalls can also act as PROXY server. In this case your internal IP addresses are hidden from the outside world. The sites on the outside only see *one* IP address (the firewalls) instead of seeing any of your internal addresses.

M

0

Featured Post

Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

Join & Write a Comment

Does your iMac really need a hardware upgrade? Will upgrading RAM speed-up your computer? If yes, then how can you proceed? Upgrading RAM in your iMac is not as simple as it may seem. This article will help you in getting and installing right RA…
In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
This video discusses moving either the default database or any database to a new volume.
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now