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In this paper, the performance of VoIP on IPv4, IPv6 and 6in4 protocol with and without IPsec is compared. RTT (Round Trip Time), Throughput, Jitter and CPU usage are compared in VoIP networks. The results for throughput are almost same for both operating systems. CPU usage was higher on both operating systems with IPsec enabled and the results for RTT and Jitter were inconsistent. In general, the...
In this paper, wireless 802.11ac client-server network with open system (no security) and WPA2 (Wi-Fi Protected Access 2) security is investigated. The results shows that, by implementing WPA2 security, TCP throughput of IPv4 and IPv6 on average decreased by 16.79% and 10.22% respectively. Throughput for UDP is decreased by 18.07% and 12.99% for IPv4 and IPv6 respectively. For both IPv4 and IPv6,...
IPSec (IP Security) and SSL (Secure Socket Layer) are the main technologies for securing communications via the Internet. In this paper, we present new results on the performance of SSL using Windows 7 operating system under IEEE802.11n wireless network. Enabling IPSec security results on average approximately 50% less TCP throughout while enabling SSL security results on average approximately 96%...
Denial of Service (DoS) attacks is one of the major threats and among the hardest security problems in the Internet world. Of particular concern are Distributed Denial of Service (DDoS) attacks, whose impact can be proportionally severe. With little or no advance warning, an attacker can easily exhaust the computing resources of its victim within a short period of time. In this paper, we study the...
The TCP SYN DDoS attack and defense prevention mechanisms is studied. Each prevention mechanism has some exclusive pros and cons over the others. In this paper, we have compared various defence mechanisms for preventing potential TCP SYN DDoS attacks. Router based TCP Intercept is found to provide the best defense while Anti DDoS Guardian gave the worst defese.
IPSec (IP Security) is a robust technique for securing communications over the Internet. Due to security algorithms used, transferring data using IPSec is known to be significantly slow. In this paper using a test bed environment for a site to site IPSec, we present new results on performance of IPSec for both IPv4 and IPv6 using Fedora 15 operating system and wireless network. Compared to open system,...
IPv6 is built into the latest versions of Microsoft Windows and Linux-based operating systems. It's expected to replace the current IPv4 and solve its numerous problems, such as address exhaustion, security, and mobility. However, implementing IPv6 will have drawbacks, such as lower bandwidth, so it's important to determine which modern operating systems will give the best bandwidth performance over...
The performance of category 5e and category 6 cabling systems is compared for both IPv4 and IPv6 using Gigabit Ethernet LAN. The maximum bandwidth achieved over Gigabit Ethernet was 700Mbps and it was for IPv4 and category 5e cabling. IPv4 and IPv6 resulted in better TCP and UDP throughput on Category 5e than it did with Category 6.
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