Tài liệu LESSON 3: PORTS AND PROTOCOLS doc

... references: http://www.iana.org/assignments/port-numbers http://www.isecom.info/cgi-local/protocoldb/browse.dsp 17 LESSON 3 – PORTS AND PROTOCOLS LESSON 3 PORTS AND PROTOCOLS “License for Use” Information The following lessons and workbooks are open and publicly available under the following terms and ... ISECOM Pete Herzog, ISECOM 4 LESSON 3 – PORTS AND PROTOCO...

Ngày tải lên: 26/01/2014, 20:20

... authentication and user data encryp- tion based on the subscriber identity IMSI and secret keys. Beyond that,the SIM can store short messages and charging information ,and it has a telephone book function and ... station. 3.3.4 Operation and Maintenance (OMSS) 3.3.4.1 Network Monitoring and Maintenance The ongoing network operation is controlled and maintained by the Operation...

Ngày tải lên: 23/12/2013, 17:15

... These reports serve as inputs for the handover and power control algorithms. The measurement objects are on the one hand the uplink and downlink of the current channel (TCH or SDCCH), and on the ... Synchronization means on the one hand the time-wise synchronization of mobile station and base with regard to bits and 5 Air Interface ± Physical Layer 70 frames, and on the other hand...

Ngày tải lên: 20/01/2014, 23:20

... can calculate a set of (RAND, SRES) 2- tuples in advance, store them in the HLR, and send them on demand to the requesting VLR. The VLR stores this set (RAND[n], SRES[n]) and uses a new 2-tuple ... each side using the generator algorithm A8 and the random number RAND of the authentication process 6 Coding, Authentication, and Ciphering 122 Figure 6. 23: Highly secure authentication (...

Ngày tải lên: 20/01/2014, 23:20

... response times, etc.), and utilization of network components (hardware and software). The objective is on one hand to ensure a good utilization of resources and on the other hand to recognize trends ... and analyze failure reports and alarms, or to download locally collected measurement data and usage information. The TMN protocol stack required for this purpose is based on OSI p...

Ngày tải lên: 20/01/2014, 23:20

... between SGSN and the registers HLR, VLR, and EIR (Figure 11.12) uses protocols known from conventional GSM (Section 7.3) and partly extends them with GPRS-speci®c functionality. Between SGSN and HLR ... data. Now, the SGSN offers a random number RAND to the MS (authentication and ciphering request). The MS calculates SRES and transmits it back to the SGSN (authentication and c...

Ngày tải lên: 20/01/2014, 23:20

... multiple of its original bandwidth. Typically, spreading factors are between 10 and 1000; they generate a broadband signal for transmission from the narrowband signal, and this is less sensitive ... systems and is also used in digital systems. For the communication between mobile and base station, the available frequency band is split into two partial bands, to enable simultaneous sen...

Ngày tải lên: 26/01/2014, 12:20

... station. 3.3.4 Operation and Maintenance (OMSS) 3.3.4.1 Network Monitoring and Maintenance The ongoing network operation is controlled and maintained by the Operation and Main- tenance Subsystem ... veri®cation of equipment and subscriber identity; therefore the databases serve for subscriber identi®cation and authentication and for equipment regis- tration. Con®dential data an...

Ngày tải lên: 26/01/2014, 12:20

... if you’re overweight and/ or you eat a diet high in pr ocessed foods, including white bread, cook- ies, ice cream and packaged dinners, and low in fiber and fresh fruits and vegetables, you have ... regulated. Fact: The Food, Drug and Cosmetic Act requires that cosmetics and their individual ingredients must be safe, and labeling must be truthful and not misleading.The U.S.Fo...

Ngày tải lên: 10/12/2013, 04:15

... files and paper documents. Errors exist in some product data because some of the flat files and paper documents contain outdated information. The company plans to create catalogs in XML and has ... errors by standardizing existing information and adding missing information. For example, it must reconcile the differences between the attribute values for Men’s and Women’s and Ma...

Ngày tải lên: 10/12/2013, 16:15