Defense in Depth / Firewalls Presentation
... by firewall. Locate webservers and other services there that generate potentially unsafe traffic. ...
... by firewall. Locate webservers and other services there that generate potentially unsafe traffic. ...
Firewalls
... attacker uses an internal IP address and hopes that packet penetrates into the system countermeasure: do not accept internal IPs from external interface ...
... attacker uses an internal IP address and hopes that packet penetrates into the system countermeasure: do not accept internal IPs from external interface ...
PowerPoint Presentation - Non Blocking Crossbar Switch
... Simulator Cradle (~200 functions) Network stack ...
... Simulator Cradle (~200 functions) Network stack ...
cn2 – basic network tools and analysis
... the actual delivery of the data, TCP takes care of keeping track of the individual units of data (called packets) that a message is divided into for efficient routing through the Internet. For example, when an HTML file is sent to you from a Web server, the Transmission Control Protocol (TCP) progra ...
... the actual delivery of the data, TCP takes care of keeping track of the individual units of data (called packets) that a message is divided into for efficient routing through the Internet. For example, when an HTML file is sent to you from a Web server, the Transmission Control Protocol (TCP) progra ...
NetLayer
... SYN (technically it could send data in this packet). • TCP responds to any options that may have been requested in the SYN • Browser actually transmits its request and the data flow starts. COMT 625 ...
... SYN (technically it could send data in this packet). • TCP responds to any options that may have been requested in the SYN • Browser actually transmits its request and the data flow starts. COMT 625 ...
IP Routing, GGP, and RIP
... Packets are normally sent every 30sec If a route is not refreshed within 180 seconds, distance is set to infinity and later entry is removed ...
... Packets are normally sent every 30sec If a route is not refreshed within 180 seconds, distance is set to infinity and later entry is removed ...
QoS Support in 802.11 Wireless LANs
... NSF EIN: Experimental Infrastructure Network Project: Jan. 2004 – Dec. 2007 Grant: $3.5M ...
... NSF EIN: Experimental Infrastructure Network Project: Jan. 2004 – Dec. 2007 Grant: $3.5M ...
Routers, Filtering, firewall, and NAT
... – When a response is received the firewall forwards the packet onto the computer. ...
... – When a response is received the firewall forwards the packet onto the computer. ...
ppt - Suraj @ LUMS
... Packets are normally sent every 30sec If a route is not refreshed within 180 seconds, distance is set to infinity and later entry is removed ...
... Packets are normally sent every 30sec If a route is not refreshed within 180 seconds, distance is set to infinity and later entry is removed ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Circuit switching is quite different from packet switching; in circuit switching, a connection is set up whenever information has to be transferred from a source node to a destination node. This connection is called a circuit, from which the name circuit switching is derived. When a circuit is in op ...
... Circuit switching is quite different from packet switching; in circuit switching, a connection is set up whenever information has to be transferred from a source node to a destination node. This connection is called a circuit, from which the name circuit switching is derived. When a circuit is in op ...
3rd Edition, Chapter 5
... encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source, dest • different from IP address! ...
... encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source, dest • different from IP address! ...
- EdShare
... of the CSMA/CA, which is based on the detection of the signal before any data packets are sent. CSMA/CA is commonly used in wireless network systems. With more homes and businesses using wireless routers in today's world collisions are becoming an increasingly bigger issue as each network contends f ...
... of the CSMA/CA, which is based on the detection of the signal before any data packets are sent. CSMA/CA is commonly used in wireless network systems. With more homes and businesses using wireless routers in today's world collisions are becoming an increasingly bigger issue as each network contends f ...
- NetComm Wireless
... Site to site VPN where data is encrypted from one VPN gateway to another over a third party network such as the internet Remote Access VPN where a secure connection is established between an individual computer and a VPN gateway. NetComm Wireless routers support the following VPN protocols: IPSec Op ...
... Site to site VPN where data is encrypted from one VPN gateway to another over a third party network such as the internet Remote Access VPN where a secure connection is established between an individual computer and a VPN gateway. NetComm Wireless routers support the following VPN protocols: IPSec Op ...
No Slide Title - BNRG - University of California, Berkeley
... • Major development in 1990s: storage networks – Native FC is a point-to-point or loop/string-oriented (“arbitrated”) method of interconnection; 1 Gbps, extend up to 10 km – Emergence of FC “fabrics”: FC switches arranged hierarchically to enable connectivity between any host and any storage device ...
... • Major development in 1990s: storage networks – Native FC is a point-to-point or loop/string-oriented (“arbitrated”) method of interconnection; 1 Gbps, extend up to 10 km – Emergence of FC “fabrics”: FC switches arranged hierarchically to enable connectivity between any host and any storage device ...
Lecture-9 on 10/22/2009 - Computer Science and Engineering
... Some of these slides are adapted from various sources/individuals including but not limited to the slides from the text books by Kurose and Ross, digital libraries such as IEEE/ACM digital libraries and slides from Prof. Vahdat. Use of these slides other than for pedagogical purpose for CSE 124, may ...
... Some of these slides are adapted from various sources/individuals including but not limited to the slides from the text books by Kurose and Ross, digital libraries such as IEEE/ACM digital libraries and slides from Prof. Vahdat. Use of these slides other than for pedagogical purpose for CSE 124, may ...
Chapter 7 TCP Traffic Control
... — proceed with incrementing the congestion window size by adding 1 segment for each ACK received ...
... — proceed with incrementing the congestion window size by adding 1 segment for each ACK received ...
Chapters 1 and 2
... the data only, the header only (IP) or both (TCP) • Can be located in header or at end of packet • The error detection field is also called a Cyclic Redundancy Check (CRC) • Most link-layer protocols use CRC’s for error detection, e.g. HDLC, PPP • A checksum is a special case of a CRC where the Prof ...
... the data only, the header only (IP) or both (TCP) • Can be located in header or at end of packet • The error detection field is also called a Cyclic Redundancy Check (CRC) • Most link-layer protocols use CRC’s for error detection, e.g. HDLC, PPP • A checksum is a special case of a CRC where the Prof ...
Review for final - Computer Science Division
... claimed source if multiple app’s. need special treatment, each has own app. gateway. client software must know how to contact gateway. ...
... claimed source if multiple app’s. need special treatment, each has own app. gateway. client software must know how to contact gateway. ...
CCNP Routing Semester 5 - YSU Computer Science & Information
... by which a switch can route between VLANS; also refers to routers when the routing decision has been made and the result has been cached – the subsequent lookup involves switching on a Layer 3 decision ...
... by which a switch can route between VLANS; also refers to routers when the routing decision has been made and the result has been cached – the subsequent lookup involves switching on a Layer 3 decision ...
Mobile Applications and Web Services
... between the operating system and the application. − Tasks, commands and events are fundamental building blocks of the TinyOS run-time environment. − Tasks are monolithic processes that should be executed until they are complete. − This means they can not be blocked by other tasks but they can be int ...
... between the operating system and the application. − Tasks, commands and events are fundamental building blocks of the TinyOS run-time environment. − Tasks are monolithic processes that should be executed until they are complete. − This means they can not be blocked by other tasks but they can be int ...
Computer Networks and Internets
... The Point of Routing Exchange Each router runs routing software that learns about destinations other routers can reach, and informs other routers about destinations that it can reach. The routing software uses incoming information to update the local routing table ...
... The Point of Routing Exchange Each router runs routing software that learns about destinations other routers can reach, and informs other routers about destinations that it can reach. The routing software uses incoming information to update the local routing table ...
Internet protocol suite
The Internet protocol suite is the computer networking model and set of communications protocols used on the Internet and similar computer networks. It is commonly known as TCP/IP, because among many protocols, the Transmission Control Protocol (TCP) and the Internet Protocol (IP) is the accepted and most widely used protocol in Internet. Often also called the Internet model, it was originally also known as the DoD model, because the development of the networking model was funded by DARPA, an agency of the United States Department of Defense.TCP/IP provides end-to-end connectivity specifying how data should be packetized, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved. From lowest to highest, the layers are the link layer, containing communication technologies for a single network segment (link); the internet layer, connecting hosts across independent networks, thus establishing internetworking; the transport layer handling host-to-host communication; and the application layer, which provides process-to-process application data exchange.The TCP/IP model and related protocol models are maintained by the Internet Engineering Task Force (IETF).