Control of the packets on network by using firewall on open systems

ABSTRACTMS ThesisCONTROL OF THE PACKETS ON NETWORK BY USINGFIREWALL ON OPEN SYSTEMSGürkan KARABATAKFırat UniversityGraduate School of Natural and Applied SciencesDepartment of Computer Engineering2006, Page : 44In this study, open source code softwares, which present different solutions in everyarea, were introduced, and a hardware tool, which is needed very much in network, wasmentioned about. At this aim, a firewall which is controlable on the web completely and can beused on the serial port by console connection on demand, was designed. It also containsconnection tracking, traffic analyse, and similar tools in its structure. By the way, an opensource code alternative to network tools was presented. To response to requirement in the futureof this firewall or adding new features to this firewall; modules of this firewall on Linux kernelcould be modify, was shown with an example application.Finally, the advantages and disadvantages of this firewall was exposed and comparedwith other systems which are exist on today.Keywords: Firewall, Linux, Netfilter, Iptables, open source.V