Loading...
×
V Ex Electronics Systems Pvt.Ltd Payment Q-R Code :
FireWall
A firewall is a network security device
About
FireWall
Firewall in Computer Network :
A firewall is a network security device, either hardware or software-based, which monitors all incoming and outgoing traffic and based on a defined set of security rules it accepts, rejects or drops that specific traffic.
- Accept : Allow the traffic
- Reject : Block the traffic but reply with an “unreachable error”
- Drop : Block the traffic with no reply
Features and Benefits:
- One of the most visible benefits of firewalls is the ability to control your system's entry points and stop virus attacks.
- The cost of damage from a virus attack on your systems could be immeasurably high, depending on the type of virus.
- Prevents Hacking, Stops Virus Attacks, Updates Threat Protection, Consistent Network Speed
- Proactively addressing the security concerns of your business and your network now can pay dividends of time savings.
How Firewall Works
- Firewall match the network traffic against the rule set defined in its table safe or not
- Once the rule is matched, associate action is applied to the network traffic
- Most of the traffic which reaches firewall uses one of these three major Transport Layer protocols- TCP, UDP or ICMP
- All these types have a source address and destination address
- A firewall establishes a barrier between secured internal networks and outside untrusted network, such as the Internet