© Ellis Horowitz Marco Papa 2006-2021 1 Web Services and REST Introduction • Web sites are normally accessed by a browser guided by a person • But we have seen that programs can also access a web site, return one or more pages, and scrape the site for information • Web Services is the idea […]
© Ellis Horowitz, Marco Papa 1999-2021 1 Lecture Secure Web Communication and Web Server Performance © Ellis Horowitz, Marco Papa 1999-2021 2 3 Diverse Topics for Today 1. Secure web communication – Public Key Cryptography – Public and private key encryption – Digital Certificates and Certifying Authorities – Secure Sockets Layer Protocol (SSL) and https
High Performance Web Sites Much of the material derives from Steve Souders (SpeedCurve) and Tenni Theurer (Visa), 2006 research at Yahoo! 1(C) 2009 – 2021 Ellis Horowitz and Marco Papa The Importance of Front-End Performance The graph shows the time taken to download an html file and various associated image files, JavaScript files, and CSS
Beehive Network security , CSE 365 Fall 2021 mailto: Outline ● Internet in a nutshell and the OSI model – Ethernet, ARP, IP, TCP, BGP, etc. ● Attacks in different layers – Off-path vs. in/on-path ● Firewalls and NIDSs ● VPNs ● Port scanning, SYN floods Some comments ● Bits matter ● Self reliance –
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DEF CON 27 Hacking Conference Presentation 1 The Tor Censorship Arms Race: The Next Chapter 2 ● Online Anonymity – Open Source – Open Network ● Community of researchers, developers, users and relay operators. ● U.S. 501(c)(3) non- pro%t organization 3 Estimated 2,000,000 to 8,000,000 daily Tor users 4 Threat model: what can the attacker
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IFN507 Network Systems P11: Addressing, Routing and Remote Filesystems in Linux Practical 11 Addressing, Routing and Remote Filesystems in Linux Introduction This practical will cover some basic networking functions in Linux. You require the 4 Linux server virtual machines to complete this practical these are available on Blackboard and are already preinstalled on the computers
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IFN507 Network Systems P6: ICMP, ARP TCP/UDP Analysis using Wireshark Practical 6 ICMP, ARP TCP/UDP Analysis using Wireshark Learning Objectives Upon completion of this practical, you will be able to: · Use Ping utility working for diagnosing network connectivity issues in the Network layer · Use Tracert utility to display the path to reach the
Lecture 8 Network Security Part 1 Dr Vicky Liu v. .au P4.1 1 OSI and TCP/IP models 2 Outline Layer 3: Network Internet Protocol (IP) Address Resolution Protocol (ARP) Internet Control Message Protocol (ICMP) Layer 4: Transport Transmission Control Protocol (TCP) Layer 7: Application Dynamic Host Configuration Protocol (DHCP) Domain Name System (DNS) 3 Vulnerability/Threat/Risk
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Lecture 7 Application-Layer Protocols Dr Vicky Liu v. .au 1 7. Application 6. Presentation 5. Session 4. Transport 3. Network 2. Data Link 1. Physical HTTP DNS Telnet SMTP SSH DHCP FTP … 2 2 Outline Domain Name System (DNS) Hypertext Transfer Protocol (HTTP) Simple Mail Transfer Protocol (SMTP) File Transfer Protocol (FTP) Telnet and
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IFN507 Network Systems P6: ICMP, ARP TCP/UDP Analysis using Wireshark Practical 6 ICMP, ARP TCP/UDP Analysis using Wireshark Learning Objectives Upon completion of this practical, you will be able to: · Use Ping utility working for diagnosing network connectivity issues in the Network layer · Use Tracert utility to display the path to reach the