ڈاکٹر سعید انصاری
افسوس ہے کہ ۲۶؍ جنوری کو ڈاکٹر سعید انصاری کا دہلی میں کینسر کے موذی مرض میں انتقال ہوگیا، اﷲ تعالیٰ ان کی مغفرت فرمائے، وہ دارالمصنفین کی مجلس انتظامیہ کے قدیم رکن تھے۔ (صباح الدین عبدالرحمن، فروری ۱۹۸۴ء)
ڈاکٹر سعید انصاری
قارئین معارف کو گزشتہ شمارہ سے جناب سعید انصاری کے انتقال کی خبر معلوم ہوچکی ہے، ان کا وطن اعظم گڑھ ہی تھا، اپنے محلہ اور شہر کے قدیم مدرسہ اسلامیہ میں ابتدائی تعلیم حاصل کرنے کے بعد انھوں نے مشن اسکول میں داخلہ لیا، یہ بڑا پرآشوب دور تھا، ملک کے گوشہ گوشہ میں خلافت، اور ترک موالات کی تحریک کے اثر سے انگریزوں کے خلاف ہیجان برپا تھا۔
تحریک کے پروگرام میں سرکاری اسکولوں اور کالجوں کا مقاطعہ بھی تھا، سعید انصاری صاحب نے اس سے متاثر ہوکر اسکول چھوڑ دیا اور بنارس جاکر کاشی ودیا پیٹھ سے فرسٹ ڈویژن میں میڑک کیا، انٹرمیڈیٹ میں بارہ روپے ماہوار وظیفہ ملا مگر جامعہ اسلامیہ کی کشش انھیں علی گڑھ کھینچ لائی، ۱۹۲۴ء میں وہ طلبہ کی انجمن اتحاد کے سکریٹری اور ان کے ہم سبق ڈاکٹر یوسف حسین خان مرحوم نائب صدر ہوئے، ۱۹۲۵ء میں بی۔اے کیا اور ۱۹۲۶ء میں جامعہ میں استاد کی حیثیت سے ان کا تقرر ہوا، اس زمانہ میں اس کی مالی حالت نہایت خراب تھی، کئی کئی مہینے تک استادوں کو تنخواہیں نہیں ملتی تھیں، جامعہ کے امنا (ٹرسٹیز) اسے بند کردینے کے لئے آمادہ ہوگئے تھے مگر انجمن تعلیم ملی کے ارکان نے بیس برس تک جامعہ کی خدمت کرتے رہنے اور ڈیڑھ سو سے زیادہ مشاہرہ نہ لینے کا عہد کیا تھا، ابتداء میں گیارہ استاد اس کے حباتی رکن تھے جن میں سعید انصاری مرحوم بھی تھے۔
وہ اپنی علمی و تعلیمی استعداد بڑھانے...
COVID-19 pandemic is a global health crisis with 61, 149,391 confirmed cases and 370,478 deaths till 29May, 2020 [1]. This pandemic has shattered many economies with an estimated loss of $5.8 trillion to $8.8 trillion globally. This economic loss can result in reduction in funds to World Health Organization. Unfortunately, United States of America (USA) has announced termination of any further funding to WHO which can lead to another global health crisis[2]. As WHO is a voluntary funding based organization its main donor are America, China, Japan, Germany and United Kingdom. Among these USA is the main donor with a contribution of $115.8million alone followed by China $57.4 million, Japan $41million, Germany $29.1 million and UK $21.9 million [3]. America’s termination of funding can put WHO and child health programs in serious crisis. Among many programs run by WHO one of the most important program is immunization of children. Immunization coverage programs save 2-3 million livesper year causing decline in measles related deaths, eradication of polio, surveillance of rotavirus, BCG and DTaP vaccination in children[4]. It is estimated that during MillenniumDevelopment Goal (MDG) there is overall decline in child related mortalities due to malaria, measles, diarrhea, AIDS and meningitis [5]. Remarkable results are achieved with measles are diarrhea immunization programs causing a decline in death rate by 73% and 80% respectively. According to a study with current success rate diarrhea related deaths can be virtually eliminated by 2030. Another successful program is “End Polio” program which eradicated polio from world except from Pakistan and Afghanistan [4][6]. This termination of funds to WHO can waste all previous efforts in developing countries. On the other hand despite of all efforts still 19.4 million children did not received prescribed dose of vaccines. Data analysis revealed among these 60% of children belong to 10 developing countries namelyAngola, Brazil, the Democratic Republic of the Congo, Ethiopia, India, Indonesia, Nigeria, Pakistan, the Philippines and Viet Nam [4]. These countries mainly rely on foreign funding and Non-Government Organization (NGOs) for child health care programs.
Today, Denial of Service (DOS) and Distributed Denial of Service attacks (DDOS) are rapidly increasing on the Internet. DDOS attacks are used to overload the network infrastructure and services. Such kinds of attacks lead to the unavailability of services across networks. In this research, different types of DOS/DDOS attacks and prevention measures are also discussed. Honey pots can be used to ensure the continuous availability of services across networks. Honey pot is defined as a trap that mimics, notice and records overall activities of the attacker. Honey pot is used on server side, recognizes different kinds of attacks, protects user?s confidential data and records all malicious activities. Minimal computer resources are required in honey pots. These can be used as potential sources of risk for the network. Honey pots have a limited preventive character and a high degree of intrusion detection. In this research, Honey pots will be implemented in a demilitarized zone where two firewalls are used to protect internal and external traffic of the network. In suggested solution, honey pots are implemented as virtual machines (VM) which can be hosted on some physical servers. VM?s share resources, so multiple honey pots can be hosted on one server. The security mechanism of Honey pots VM is same as real servers but some vulnerability is deliberately left in order to trap the attacker. These VM?s observe the incoming traffic and notice the malicious activities continuously, once an attack is detected, all traffic from attack source will be forwarded to the honey pot VM network. In this way, malicious data will not route towards the production servers. The preventive action will be taken for a DDOS attack through the honey mesh system is based on fuzzy rules. Fuzzy control logic is used with reasoning which is approximation value rather than exact values. The purpose of this research is how to prevent different types of DOS/DDOS attacks through expert honey mesh security infrastructure. In this research, software simulation tool DDOSSim will be used to identify and simulate DDOS attacks via defense mechanism. The performance will be evaluated via taxonomy of input and output parameters in order to detect and prevent DDOS attacks.