Limitation of firewall
Written by Vyga V R Sunday, 28 March 2010 08:14
For a firewall to work, it must be a part of a consistent overall organizational security architecture. The firewall will be an integral part of any security program, but it is not a security program in and of itself.
Even though a firewall protects internal users from external users, it does nothing to protect or isolate internal users from each other. Firewalls can’t protect very well against things like viruses or malicious software .A firewall cannot replace security-consciousness on the part of your users. In general, a firewall cannot protect against a data-driven attack in which something is mailed or copied to an internal host where it is then executed.
It doesn’t protect against malicious insiders.
Authorized users can steal data, damage hardware and software, and generate attacks with out having to deal with the firewall. You can protect your network against these measures by developing and enforcing internal security policies.
It can’t prevent uncontrolled traffic.
A firewall can’t handle network traffic that bypasses it. A firewall is designed to handle users, rather than systems.
It can’t protect against completely new threats.
A firewall can protect only against known threats. No firewall can defend a system against every new threat.
It can’t prevent virus attacks.
Although firewall software does inspect incoming data packets, it looks at only the source and the destination addresses of a packet and not the contents of the packet. This type of firewall technology can’t guard against viruses because the firewall can’t detect that a packet contains a virus.
| < Prev | Next > |
|---|