Friday, 20 January 2012
Current Satuation Of Pakistan
Dear Readers, As you know, Pakistan is an important participant of the coalition. Pakistan has always been and will remain to be against all forms of terrorism. The political structure of Pakistan has never been more stable than what it is now. Under the leadership of General Pervaiz Musharaf (President of Pakistan), we have made many wise decisions to promote all aspects of the economy. The government is greatly concerned about the future of Pakistan and has placed great emphasis on Tourism which is very important for Pakistan because of it's beautiful natural assets.
At the moment, it's the month of Ramadan in which people fast from dawn till dusk. Prayers are held in the evening after which people engage in various festivities. Merchants have decorated their shops to attract more customers during the holy month. We can see happy faces filling the streets of the markets. Young boys play cricket while girls jump rope near their homes.
There is complete peace inside Pakistan. It's borders are being guarded by one of the world's best army. The streets of it's cities are safe. It's shopping centers and markets are lined up with all sorts of goods. The government has closed all Afghan consulates inside Pakistan until a stable and broad-based government is established inside Afghanistan.
Pakistan is also supporting the UN decision during the Bonn conference of a temporary kingdom of Afghanistan under the former king (Zahir Shah) for six months which will later lead to a broad based government.
Hunza and Baltistan (Most famous tourists attraction areas in Pakistan) are safe and their people fully support Pakistan Government. The Karakoram Highway (KKH) is busy as usual with transport vehicles carrying passengers and goods to and from Northern Areas of Pakistan. The people of Northern Areas are very happy with it's policies and so is the rest of the population of Pakistan. Businesses and shops are open with shoppers seeking their daily needs. Schools and colleges are open where children happily attend classes. Restaurants and hotels are open and are ready to receive customers with open doors. Pakistan International Airlines (PIA) is operating normal flights to
and from Islamabad, Skardu, and Gilgit. People listen to the news on radio and TV, then discuss the current situation while fully supporting the government's decisions.
All trekking routes are open as before and there are no restrictions. People in small villages along the routes still await you waving and there is nothing out of the ordinary.
At the moment, it's the month of Ramadan in which people fast from dawn till dusk. Prayers are held in the evening after which people engage in various festivities. Merchants have decorated their shops to attract more customers during the holy month. We can see happy faces filling the streets of the markets. Young boys play cricket while girls jump rope near their homes.
There is complete peace inside Pakistan. It's borders are being guarded by one of the world's best army. The streets of it's cities are safe. It's shopping centers and markets are lined up with all sorts of goods. The government has closed all Afghan consulates inside Pakistan until a stable and broad-based government is established inside Afghanistan.
Pakistan is also supporting the UN decision during the Bonn conference of a temporary kingdom of Afghanistan under the former king (Zahir Shah) for six months which will later lead to a broad based government.
Hunza and Baltistan (Most famous tourists attraction areas in Pakistan) are safe and their people fully support Pakistan Government. The Karakoram Highway (KKH) is busy as usual with transport vehicles carrying passengers and goods to and from Northern Areas of Pakistan. The people of Northern Areas are very happy with it's policies and so is the rest of the population of Pakistan. Businesses and shops are open with shoppers seeking their daily needs. Schools and colleges are open where children happily attend classes. Restaurants and hotels are open and are ready to receive customers with open doors. Pakistan International Airlines (PIA) is operating normal flights to
and from Islamabad, Skardu, and Gilgit. People listen to the news on radio and TV, then discuss the current situation while fully supporting the government's decisions.
All trekking routes are open as before and there are no restrictions. People in small villages along the routes still await you waving and there is nothing out of the ordinary.
Thursday, 19 January 2012
Effective utilization of multicore processor for unified threat management functions
INTRODUCTION
Network security is one of the most critical issues facing today's internet. Traditionally, for an enterprise, a firewall was used as a first line of defense. With more complicated network environment and mature attack means, the traditional firewall strategy cannot meet the demands of security. For the combined protection against complex and blended threats, multiple security features are integrated into a unified security architecture that results in a Unified Threat Management (UTM) appliance. Unified Threat Management products integrate multiple security features, such as firewall, VPN, intrusion detection and prevention systems, antivirus, spam blocking, URL filtering, content filtering and network monitoring into a single secure appliance (Qi et al., 2007). The design challenges of implementing a UTM are: -the performance of multiple functions, cost effectiveness, scalability and co-existence with third party software.
With the increase in the network speeds and also the increase in the security threats, the implementation of high performance UTM is essential. Multi-core technology offers high performance, scalability and energy efficiency. UTM processing can be decomposed into parallel activities such as per packet, per flow or type of processing.
A multicore processor (or Chip-level Multiprocessor, CMP) combines two or more independent cores into a single Integrated Circuit (IC) and performs multiprocessing (Lee and Shakaff, 2008). Multicore architecture has become more and more widely used in intensive computing applications as well as in computer networking systems. The amount of improvement in performance by the use of a multicore processor is dependent on the software algorithms and their implementation. Scheduling of parallel activities on the multicore processor is very vital to improve the performance of the system. The underlying hardware of the multicore processor has to be effectively used to obtain the optimum performance of the system.
The design challenges of implementing a UTM are: The performance of multiple functions, cost effectiveness, scalability and co-existence with third party software. Multiple functions of UTM are to be performed simultaneously at required performance levels. Discussed the concept of defining the policies for the flow based on the classification and the implementation of the different policies for the first packet and subsequent packets of the same flow. Classification, rule based policy enforcement and signature based policy enforcement are some of the common processes for UTM. Pattern matching is used in content filtering, URL filtering, spam filtering and intrusion detection functions.
In this study, we present the performance analysis of UTM functions by varying the assignment of CPUs of Sun Microsystems Ultra SPARC T1 processor. OpenMP is used for parallelizing the code for execution on the hardware threads referred as CPUs. We also proposed the type of parallelization based on the UTM function for better throughput.
MATERIALS AND METHODS
The performance evaluation is done on Sun Fire T1000 server having Sun Microsystems Ultra SPARC T1 processor. Sun Studio12 Update 1 Integrated Development Environment (IDE) on Solaris 10 Operating System was used to develop the programs in C language and to test the programs. OpenMP parallelizing features are used for implementing parallelism within each process. Libpcap Application Program Interface (API) is used for reading the packets from the physical interface or writing the packets to the physical interface. Furthermore, POSIX.1b Real-time Extension Library is used for message passing, process scheduling and timer options. System V message queues are used for queuing the packets between various stages.
Network security is one of the most critical issues facing today's internet. Traditionally, for an enterprise, a firewall was used as a first line of defense. With more complicated network environment and mature attack means, the traditional firewall strategy cannot meet the demands of security. For the combined protection against complex and blended threats, multiple security features are integrated into a unified security architecture that results in a Unified Threat Management (UTM) appliance. Unified Threat Management products integrate multiple security features, such as firewall, VPN, intrusion detection and prevention systems, antivirus, spam blocking, URL filtering, content filtering and network monitoring into a single secure appliance (Qi et al., 2007). The design challenges of implementing a UTM are: -the performance of multiple functions, cost effectiveness, scalability and co-existence with third party software.
With the increase in the network speeds and also the increase in the security threats, the implementation of high performance UTM is essential. Multi-core technology offers high performance, scalability and energy efficiency. UTM processing can be decomposed into parallel activities such as per packet, per flow or type of processing.
A multicore processor (or Chip-level Multiprocessor, CMP) combines two or more independent cores into a single Integrated Circuit (IC) and performs multiprocessing (Lee and Shakaff, 2008). Multicore architecture has become more and more widely used in intensive computing applications as well as in computer networking systems. The amount of improvement in performance by the use of a multicore processor is dependent on the software algorithms and their implementation. Scheduling of parallel activities on the multicore processor is very vital to improve the performance of the system. The underlying hardware of the multicore processor has to be effectively used to obtain the optimum performance of the system.
The design challenges of implementing a UTM are: The performance of multiple functions, cost effectiveness, scalability and co-existence with third party software. Multiple functions of UTM are to be performed simultaneously at required performance levels. Discussed the concept of defining the policies for the flow based on the classification and the implementation of the different policies for the first packet and subsequent packets of the same flow. Classification, rule based policy enforcement and signature based policy enforcement are some of the common processes for UTM. Pattern matching is used in content filtering, URL filtering, spam filtering and intrusion detection functions.
In this study, we present the performance analysis of UTM functions by varying the assignment of CPUs of Sun Microsystems Ultra SPARC T1 processor. OpenMP is used for parallelizing the code for execution on the hardware threads referred as CPUs. We also proposed the type of parallelization based on the UTM function for better throughput.
MATERIALS AND METHODS
The performance evaluation is done on Sun Fire T1000 server having Sun Microsystems Ultra SPARC T1 processor. Sun Studio12 Update 1 Integrated Development Environment (IDE) on Solaris 10 Operating System was used to develop the programs in C language and to test the programs. OpenMP parallelizing features are used for implementing parallelism within each process. Libpcap Application Program Interface (API) is used for reading the packets from the physical interface or writing the packets to the physical interface. Furthermore, POSIX.1b Real-time Extension Library is used for message passing, process scheduling and timer options. System V message queues are used for queuing the packets between various stages.
Subscribe to:
Comments (Atom)