2006-07-25 05:37:38 · 6 answers · asked by Naomi 3 in Computers & Internet ➔ Other - Computers
How can identify one?
Sometimes there is a message on my computer, saying that i cant conect to the internet (probably) because of a firewall.
2006-07-25 05:45:18 · update #1
In computing, a firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy, analogous to the function of firewalls in building construction. A firewall is also called a Border Protection Device (BPD), especially in NATO contexts, or packet filter in BSD contexts. A firewall has the basic task of controlling traffic between different zones of trust. Typical zones of trust include the Internet (a zone with no trust) and an internal network (a zone with high trust). The ultimate goal is to provide controlled connectivity between zones of differing trust levels through the enforcement of a security policy and connectivity model based on the least privilege principle.
2006-07-25 05:39:59 · answer #1 · answered by Paultech 7 · 1⤊ 0⤋
A firewall is simply a system or a group of systems that enforces an access control policy between two networks. Consequently, you can expect that there is a two-way system present in all firewalls. Out of these, one exists to block traffic, while the role of the other is to permit traffic. A firewall gives protection and acts as a shielding element to its users by monitoring information and restricting information wherever necessary. A must where there are minors using a computer.
2006-07-25 06:27:32 · answer #2 · answered by Mary H 1 · 1⤊ 0⤋
Its a software/hardware solution used to selectively allow/restrict connection to a particular computer or network.
Best free firewall is Zonealarm
http://www.zonelabs.com/store/content/catalog/products/sku_list_za.jsp?dc=12bms&ctry=GB&lang=en&lid=nav_za
You can find more info from wikipedia which is linked below:
http://en.wikipedia.org/wiki/Firewall_%28networking%29
2006-07-25 05:41:47 · answer #3 · answered by Frescomoraine 2 · 0⤊ 0⤋
it keeps malware applications and hackers out of your computer. It protects you
download for free the best firewall from
http://freewww.uv.ro/security/security.html
2006-07-25 05:40:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
it protects it from hackers and viruses.
2006-07-25 05:42:51 · answer #5 · answered by Anonymous · 0⤊ 0⤋
i think it protects against viruses and stuff...
2006-07-25 05:40:41 · answer #6 · answered by Anonymous · 0⤊ 0⤋