Performance of Network Security Issues in Open Source Servers Using iptables
Journal Title: IOSR Journals (IOSR Journal of Computer Engineering) - Year 2018, Vol 20, Issue 6
Abstract
In network system, there are several Open source servers such as DNS, Mail, FTP, Web and SIP. To maintain a secure network environment every server administrator follows an effective method for controlling and operating the different servers and protect them from several attacks because Security is the main issue for networking system. In this research, we established a secure environment for open source based servers using packet filtering firewall tools known as iptables. To protect the open source servers from external attack we have applied some rules at Linux iptables on the basis of respective port numbers, allowing and disallowing particular IP address or IP addresses with subnet for the important protocols like TCP, UDP, RTP and ICMP. After applying rules on protocols, we have used a popular simulation software or network protocol analyzer known as Wireshark for checking how the iptables rules are work and shows the changes before and after applying rules. We have also deployed the security rules for SIP server which are also be applicable for other servers like DNS, SMTP, POP3, FTP, web and proxy server according to their service port. After applying all the rules in different servers we have got better result regarding security performance and servers are more secured then previous.
Authors and Affiliations
Mohammad Jahangir Alam, Tanjia Chowdhury, Mohammed Hossain Ibrahim
Keywords
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