Index Catalog // Carleton University Institutional Repository

NAT Traversal in Peer-to-Peer Architecture

Resource Type:: Report
Creator:: Daigle, Alexandre, Poulin, Marc-André, Maldague, Lucas Rioux, and Gagnon, François
Abstract:: Peer-to-peer networks are well known for file sharing between multiple computers. They establish virtual tunnels between computers to transfer data, but NATs makes it harder. A NAT, Network Address Translation, is a process which transforms private IP addresses, such as 192.168.2.1, into public addresses, such as 203.0.113.40. The idea is that multiple private addresses can hide behind a single public address and thus virtually enlarge the number of allocable public IP addresses. When an application in the local network establishes a connection to Internet, the packet passes through the NAT which adjusts the IP header and maps an external port to the computer which sent the request. When packets are received from the Internet by the NAT, they are forwarded to the internal host which is mapped to the port on which the packet was received, or dropped if no mapping exists. In this paper, we will introduce you to NAT and P2P, we will discuss the numerous ways NATs use to translate private IP addresses into public ones, we will discuss known techniques used to fix the problem and we will also present how popular peer-to-peer programs bypass NATs. This paper is written so anybody with a reasonable knowledge of networking would grasp the essentials. It is important to keep in mind that the traversal methods presented in this document work for UDP and TCP and require no manual configuration of the Network Address Translator itself.
Date Created:: 2012-10-30

Information Management in the Canadian Federal Government: Principles, Practices and the Role of Information Professionals

Resource Type:: Report
Creator:: Stricker, Ulla de and Jordan, Isla
Abstract:: Information management (IM) in the Canadian public sector is a complex area involving many professions such as librarians, archivists, records managers and information technology professionals. This exploratory study looks at the literature and experiential (qualitative) evidence from IM professionals in order to paint a picture of information management principles and practice in the Canadian federal government. Personal interviews were conducted with 20 librarians, information managers, records managers and other information professionals. Responses indicated that although the public sector has made tremendous strides in IM, there is often a gap between IM policy and practice as shown by inconsistencies and confusion in day to day operations compounded by the decimation of federal libraries (which are repositories of external as well as government information). The study also looks at roles of librarians and other IM professionals now and in the future. These professionals are well positioned to help close the gap between information policy and practice, moving forward toward more coordinated and integrated practices in information management as well as making information accessible and usable for their clients. Such functions aid the Canadian public sector in becoming a more effective knowledge organization.
Date Created:: 2013-04-02

Personal Learning Environments (PLEs): Ecologies for building student capability for lifelong learning

Resource Type:: Report
Creator:: Renon, Flavia
Abstract:: The purpose of this working paper is to examine the role of Personal Learning Environments (PLEs) in higher education. This information will serve as a framework to inform a study of PLE use at Carleton University.
Date Created:: 2013-04-30

Pathways : Managing the complexity and uncertainty of low-carbon transitions

Resource Type:: Conference Proceeding
Creator:: Rosenbloom, Daniel
Date Created:: 2017-03-02

Internationalization Strategies for the Global Knowledge Society

Resource Type:: Conference Proceeding
Creator:: Szyszlo, Peter
Abstract:: The purpose of this article is to improve understanding of internationalization as a strategic response to the catalysts of globalization and the knowledge society. The paper will attempt to critically identify and interpret how the aforementioned elements are being recontextualized and translated into responsive internationalization policies and systemic institutional change. The article takes a critical analysis approach on current internationalization efforts and provides a conceptual framework for developing a performance indicator set through a combination of institutional change theory (North 1990) and the Delta cycle for internationalization (Rumbley 2010). Recommendations on future research areas are made at the conclusion of the article.
Date Created:: 2016-01-01