Security Enhanced Adaptive TCP for Wireless Ad Hoc Networks ()
ABSTRACT
TCP is a reliable
transport protocol designed to perform well in wired networks where packet
losses are due congestion. However in wireless ad hoc networks, where packet
losses are due to channel errors or link failures between mobile nodes, TCP
degrades its performance. Further, it lacks certain protection mechanisms from
internal and external malicious nodes. In this paper, a security enhanced and
adaptive TCP, namely SA-TCP, has been proposed for wireless ad hoc networks.
SA-TCP uses network layer information to detect various types of packet losses
and adjusts the value of congestion window dynamically according to the
conditions of the dynamic network. It works normally to collect the samples of
congestion window and calculates the mean from these samples to set the value
of future congestion window. SA-TCP also adjusts the value of congestion window
limit according to network conditions. In order to make SA-TCP suitable in
highly vulnerable wireless ad hoc networks, a less complex identity-based
public key cryptography has been integrated with the proposed protocol. The
three-way handshaking process of SA-TCP is made secure by generating a secret
session key on-fly between source-destination. Simulation results show that
SA-TCP gives higher throughput compared to the popular New Reno and ATCP in different wireless ad hoc
network scenarios.
Share and Cite:
Alnumay, W. (2014) Security Enhanced Adaptive TCP for Wireless Ad Hoc Networks.
Journal of Information Security,
5, 207-217. doi:
10.4236/jis.2014.54019.