Firewalls

Firewalls There are three main types of firewalls that are used in the networking community. The three types are Network-level, Circuit-Level Gateway, and Application-Level. Network-level Fire walls work at the network level. It inspects packet headers and filter traffic based on their source and destination. According to "Pc Results Inc." (2013), "They also take into account IP addresses, ports used and services requested.” Circuit-level Gateway firewalls work by determining the legitimacy of a requested session. This is done by monitoring the handshake between packets. This type of firewall can hide a network from hackers in the outside world as well as restrict session rules to known computers. Application-level Gateway is also known as a proxies firewall. This firewall functions similar to a circuit level firewall. The exception being work on specific applications. According to "Pc Results Inc." (2013), "They protect the network from malicious attacks, spam and viruses. They can also block websites based on content and not IP address.” When you look at the three firewalls you will all see that they have their strengths and weaknesses. The most well rounded firewall would be the Network-Level firewall. The reason would be because this firewall protects a network on multiple levels unlike the other two firewalls. Even though this firewall does not have the level of security in some areas that the other firewalls do this firewall is the most well rounded and easiest to use and is the most compatible with applications and other software.

References
PC results inc.. (2013). Retrieved from http://pcresults.com

References: PC results inc.. (2013). Retrieved from http://pcresults.com