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Sriram Chellappan Missouri University
of Science and Technology (Formerly University of Missouri - Rolla) Address: 500 W. 15th St. Office: # 306 Phone No.: 573-341-4637 Fax.: 573-341-4501 Email: chellaps[at]mst[dot]edu |
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Brief Bio:
Sriram Chellappan is an Asst.
Professor in the Dept
of Computer Science at The Missouri University of Science and Technology
- Rolla. His broad research interests are in the areas of Network Security,
Wireless Networks and Distributed Systems. Sriram received the Ph.D. Degree
from The Ohio-State University and the Bachelors degree from the University of
Madras.
Research Interests:
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Mobility
in Wireless Sensor Networks:
Recently, provisioning sensors with mobility has received significant
attention. In this realm, I have identified an important property of mobility
in energy constrained wireless sensor networks, namely mobility limitations on
sensors. Since mobility consumes energy, it is very likely that the overall
movement distance of sensors has hard limitations. My research on this topic
has focused on designing movement algorithms for limited mobility sensors in
order to maximize quality of desired deployment in the network starting from
any arbitrary deployment. I am also working on leveraging limited sensor
mobility in order to enhance quality of secure key management in certain
mission critical wireless sensor networks. [See our papers to appear in IEEE
TMC and IEEE TPDS]
·
Security
in Wireless Sensor Networks: Along
with my colleagues, I have studied the methodology of network decoupling to
enhance quality of pair-wise key set up in randomly deployed wireless sensor
networks. In this methodology, the logical key sharing topology is decoupled
from the physical connectivity topology, thereby enhancing the flexibility of
pair-wise key set up among sensors. Secondly, I have identified and studied the
problem of physical attacks in wireless sensor networks. Being small in size,
sensors are highly vulnerable to such attacks that aim to physically destroy
sensors and render them in-operable. My research contributions in this realm
are modeling such types of attacks and defenses against them. [See our papers
in IEEE IWQoS 06 and IEEE
MASS 05]
·
Security
in Overlay and Peer to Peer Systems: Along
with my colleagues, I have studied the issue of attackers leveraging
connectivity in Secure Overlay Forwarding Systems and Peer to Peer Systems. The
observation is that; while rich connectivity is beneficial for users to set up
multiple paths, it can also be leveraged by attackers to break into overlay
nodes to rapidly disclose other nodes, or launch attacks like active worms on
such systems, thereby compromising them. The research thereby demonstrates that
network resource allocation, topologies, protocols design etc. should not just
consider benign users, but also the possibility of malicious attackers
exploiting these design features. [See our papers in IEEE
ICC 05 and IEEE ICDCS 04]
Representative Publications:
·
Wei
Yu, Sriram Chellappan, Xun Wang and
Dong Xuan, Peer-to-Peer System-based Active Worm Attacks:
Modeling, Analysis and Defense, to appear in Journal of Computer communications (COMCOM), Elsevier.
·
Xiaole
Bai, Wenjun Gu, Sriram Chellappan,
Xun Wang, Bin Ma and Dong Xuan, PAS:
Predicate-based Authentication Services Against Powerful Passive Adversaries, to appear in Annual Computer Security Applications
Conference (ACSAC), Anaheim, Dec. 2008.
·
Vamsi
Paruchuri, Arjan Durresi and Sriram
Chellappan, TTL based Packet Marking for IP Traceback, to appear in IEEE Global Communications
Conference (Globecom), New Orleans, Dec. 2008.
·
Sriram Chellappan, Vamsi Paruchuri, Dylan McDonald
and Arjan Durresi, Localizing Sensor Networks in
Un-Friendly Environments, to appear in IEEE Military Communications
Conference (MILCOM), San Diego, Nov. 2008.
·
Vamsi
Paruchuri, Arjan Durresi and Sriram
Chellappan, Secure Communications over Hybrid Military Networks,
to appear in IEEE Military Communications Conference (MILCOM), San Diego, Nov.
2008.
·
Sriram
Chellappan, Wenjun
Gu, Xiaole Bai, Dong Xuan, Bin Ma and Kaizhong Zhang, Deploying Wireless
Sensor Networks under Limited Mobility Constraints, to appear in
IEEE Transactions on Mobile Computing (TMC).
[.pdf]
·
Sriram
Chellappan, Xiaole
Bai, Bin Ma, Dong Xuan and Changqing Xu, Mobility Limited Flip-based Sensor
Network Deployment, to appear in IEEE Transactions on Parallel and
Distributed Systems (TPDS). [.pdf]
·
Wenjun
Gu, Xiaole Bai, Sriram Chellappan and Dong Xuan, Network Decoupling
for Secure Communications in Wireless Sensor Networks, in Proc. of
IEEE International Workshop on Quality of Service (IWQoS), June 2006. [.pdf | .ppt] (An
extended version has been accepted for publication in IEEE Transactions on
Parallel and Distributed Systems (TPDS). [.pdf])
·
Wenjun
Gu, Xun Wang, Sriram Chellappan, Dong Xuan and Ten H. Lai, Defending against Search-based Physical Attacks in Sensor Networks,
in Proc. of IEEE Mobile Sensor and Ad-hoc and Sensor Systems (MASS), Nov. 2005. [.pdf | .ppt]
·
Wei
Yu, Philip Coyer Boyer, Sriram Chellappan and Dong Xuan, Peer-to-Peer System-based Active Worm Attacks: Modeling and Analysis,
in Proc. of IEEE International Conference on Communications (ICC), May 2005. [.pdf]
·
Dong
Xuan, Sriram Chellappan, Xun Wang and Shengquan Wang, Analyzing the Secure Overlay Services
Architecture under Intelligent DDoS Attacks, in Proc. of IEEE
International Conference on Distributed Computing Systems (ICDCS), March 2004. [.pdf | .ppt]
·
Click Here for a complete list of my
publications.
Last
Modified: Jan 8th 2008.