PPT Slides explains about OSI layer, Internet Protocol(IP), Transmission Control Protocol (TCP), User Datagram Protocol (UDP) & Internet Control Message Protocol(ICMP). It focuses on Protocol Headers and the interpretation of various header fields.
PPT describes about how to detect malicious datagrams, packet filtering systems behaviors & anomalies causing due to fragmentation.
Fragmentation is the process of splitting large packets into smaller fragments to accommodate networks with smaller maximum transmission unit sizes. This allows packets to travel across multiple networks without being dropped. There are two types of fragmentation: transparent, where fragments are reassembled at exit gateways, and non-transparent, where fragments are treated as individual packets and reassembled only at the destination host, as used in the Internet Protocol. Key challenges include ensuring all fragments are received for reassembly and minimizing overhead from fragmenting and reassembling packets.
The mobile evolution of the employee and student passSURFnet
The document discusses a new design for employee and student mobile passes that combines the functionality of SIM cards and smart cards. Key points:
- It proposes dividing the card into two parts, with one part storing mobile operator profiles and the other enabling smart card management functions.
- This would allow the mobile phone to serve as an interface for the pass while maintaining security features traditionally found in smart cards, like secure access to buildings and two-factor authentication.
- Using an eSIM rather than a physical SIM provides independence from mobile operators and makes the solution a long-term, sustainable investment. It also opens possibilities for additional secure applications on the device.
Welke nieuwe mogelijkheden biedt het SURFnet8-netwerk? Deel 2SURFnet
The document summarizes new technologies and potential services for SURFnet8, the next generation optical transport network of SURFnet. It describes how SURFnet8 will use new 100Gbps coherent optical technologies and flexible wavelength selective switching to improve on SURFnet7. Two potential niche services are also described: Alien Waves, which would bypass the service layer for direct customer connectivity and monitoring; and time and frequency transfer, to provide precise synchronization for sensor networks or as an alternative to atomic clocks. The document concludes with a brief survey about interest in further investigating these two potential new services on SURFnet8.
PPT Slides explains about OSI layer, Internet Protocol(IP), Transmission Control Protocol (TCP), User Datagram Protocol (UDP) & Internet Control Message Protocol(ICMP). It focuses on Protocol Headers and the interpretation of various header fields.
PPT describes about how to detect malicious datagrams, packet filtering systems behaviors & anomalies causing due to fragmentation.
Fragmentation is the process of splitting large packets into smaller fragments to accommodate networks with smaller maximum transmission unit sizes. This allows packets to travel across multiple networks without being dropped. There are two types of fragmentation: transparent, where fragments are reassembled at exit gateways, and non-transparent, where fragments are treated as individual packets and reassembled only at the destination host, as used in the Internet Protocol. Key challenges include ensuring all fragments are received for reassembly and minimizing overhead from fragmenting and reassembling packets.
The mobile evolution of the employee and student passSURFnet
The document discusses a new design for employee and student mobile passes that combines the functionality of SIM cards and smart cards. Key points:
- It proposes dividing the card into two parts, with one part storing mobile operator profiles and the other enabling smart card management functions.
- This would allow the mobile phone to serve as an interface for the pass while maintaining security features traditionally found in smart cards, like secure access to buildings and two-factor authentication.
- Using an eSIM rather than a physical SIM provides independence from mobile operators and makes the solution a long-term, sustainable investment. It also opens possibilities for additional secure applications on the device.
Welke nieuwe mogelijkheden biedt het SURFnet8-netwerk? Deel 2SURFnet
The document summarizes new technologies and potential services for SURFnet8, the next generation optical transport network of SURFnet. It describes how SURFnet8 will use new 100Gbps coherent optical technologies and flexible wavelength selective switching to improve on SURFnet7. Two potential niche services are also described: Alien Waves, which would bypass the service layer for direct customer connectivity and monitoring; and time and frequency transfer, to provide precise synchronization for sensor networks or as an alternative to atomic clocks. The document concludes with a brief survey about interest in further investigating these two potential new services on SURFnet8.
RUGnet, een service oriented internationaal netwerk van Fryslân tot ChinaSURFnet
The Center for Information Technology provides digital services for research and education. It has over 200 staff and a budget of 30 million euros. It operates a high-capacity network connecting the Netherlands to China, with large data storage and computing facilities totaling over 12 petabytes of storage and 6000 CPU cores. As part of the University of Groningen, the Center for Information Technology has 50 years of experience innovating and developing IT solutions as a strategic partner.
Research data zone: veilige en geoptimaliseerde netwerkomgeving voor onderzoe...SURFnet
This document discusses using dedicated servers called data transfer nodes (DTNs) to improve data transfer speeds between research institutions. DTNs are part of a network architecture called a Science DMZ that optimizes high-speed transfers. The document recommends:
- Deploying high-performance DTNs with fast storage in a separate network zone dedicated to research data and services.
- Configuring lossless connections and security policies that don't impede transfers between DTNs and research networks.
- Educating IT departments on maintaining and supporting the infrastructure to improve end-user performance for data-intensive research collaborations.
RUGnet, een service oriented internationaal netwerk van Fryslân tot ChinaSURFnet
The Center for Information Technology provides digital services for research and education. It has over 200 staff and a budget of 30 million euros. It operates a high-capacity network connecting the Netherlands to China, with large data storage and computing facilities totaling over 12 petabytes of storage and 6000 CPU cores. As part of the University of Groningen, the Center for Information Technology has 50 years of experience innovating and developing IT solutions as a strategic partner.
Research data zone: veilige en geoptimaliseerde netwerkomgeving voor onderzoe...SURFnet
This document discusses using dedicated servers called data transfer nodes (DTNs) to improve data transfer speeds between research institutions. DTNs are part of a network architecture called a Science DMZ that optimizes high-speed transfers. The document recommends:
- Deploying high-performance DTNs with fast storage in a separate network zone dedicated to research data and services.
- Configuring lossless connections and security policies that don't impede transfers between DTNs and research networks.
- Educating IT departments on maintaining and supporting the infrastructure to improve end-user performance for data-intensive research collaborations.
5. cert-edu@uvt.nl
Help! Het Internet is weg!
We onderscheiden in grote lijnen twee soorten DDoS-aanvallen:
Volumetrische aanvallen
Applicatie specifieke aanvallen
12. cert-edu@uvt.nl
Help! Het Internet is weg!
Jeffeny Hoogervorst (j.hoogervorst@uvt.nl)
• IT Security Officer Tilburg University
• Voorzitter UvT-CERT
• Kernel member SURFcert