By Angus Wong
ISBN-10: 1441901655
ISBN-13: 9781441901651
ISBN-10: 1441901663
ISBN-13: 9781441901668
ISBN-10: 2009921186
ISBN-13: 9782009921180
Research on net safety over the last few many years has centred regularly on information assurance, problems with info confidentiality and integrity as explored via cryptograph algorithms, electronic signature, authentication code, and so on. in contrast to different books on community info protection, Network Infrastructure Security via Angus Wong and Alan Yeung addresses the rising drawback with higher detecting and fighting routers and different community units from being attacked or compromised.
Attacks to community infrastructure have an effect on huge parts of the net at a time and create quite a lot of provider disruption, as a result of breaches akin to IP spoofing, routing desk poisoning and routing loops. day-by-day operations worldwide hugely rely on the supply and reliability of the net, which makes the protection of this infrastructure a most sensible precedence factor within the box.
Network Infrastructure Security is a e-book that bridges the distance among the learn of the site visitors movement of networks and the examine of the particular community configuration. This ebook makes potent use of examples and figures to demonstrate community infrastructure assaults from a theoretical perspective. The ebook contains conceptual examples that express how community assaults could be run, in addition to applicable countermeasures and strategies.
About the authors
Angus Kin-Yeung Wong bought his BSc and PhD levels from urban collage of Hong Kong and is at present an affiliate professor at Macao Polytechnic Institute. Alan Kai-Hau Yeung acquired his BSc and PhD levels from the chinese language college of Hong Kong and is at the moment an affiliate professor at urban collage of Hong Kong. Wong and Yeung were taking part in network-related study for over 10 years.
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Extra info for Network Infrastructure Security
Example text
12b. 6. When the bridges detect the TC flag, they age out CAM table entries faster (by using Forward Delay instead of the regular 300 seconds). The use of shorter timeout is to avoid inconsistence in their CAM tables. Note that, during this period, disconnects or temporary loops can occur. Only after the root clears the TC flag, the (non-root) bridges resume their normal aging time (300 seconds) and begin the learning and forwarding operations for the new topology. It takes about 30-50 seconds to converge again.
For example, users in the Marketing department are placed in the Marketing VLAN, whereas users in the Engineering Department are placed in the Engineering VLAN, as shown in Fig. 16. VLANs provides many advantages including: Ease network administration: VLANs facilitate easy assignment of logical groups of computers, and easy modifications of the groups. These can be done by simply configuring the switch ports without the physical movement of the computers. Improved bandwidth usage: Users in the same workgroup share the similar resources such as databases and disk storage.
A. Configuration BPDU b. TCN BPDU Fig. 6. Formats of BPDUs Bridge ID: In a spanning tree network, each bridge has a unique Bridge ID, and each port of a bridge is given a cost (based on bandwidth). A Bridge ID consists of a 2-byte bridge priority and a 6-byte MAC address. The default priority is 32768. Port State Each port has a port state under STP. The possible states are listed below along with the default timers that control the transition times. 1. Disabled—Administratively down and all frames discarded 2.