Lecture3_Networking_..
... network. This means that when you send any packet across the internet, TCP/IP will allow any other user to see or modify your data !!! Traditionally all security capabilities were implemented in the applications. Recent extensions to TCP/IP – IPSec Still fairly new ...
... network. This means that when you send any packet across the internet, TCP/IP will allow any other user to see or modify your data !!! Traditionally all security capabilities were implemented in the applications. Recent extensions to TCP/IP – IPSec Still fairly new ...
Document
... • Available on most but not all systems that have an IP stack. • Relies on the fact that routers should always decrement the TTL of a packet as it passes. • Generally uses ICMP packets on Windows and UDP packets on UNIX systems. However any IP protocol could be used in theory. ...
... • Available on most but not all systems that have an IP stack. • Relies on the fact that routers should always decrement the TTL of a packet as it passes. • Generally uses ICMP packets on Windows and UDP packets on UNIX systems. However any IP protocol could be used in theory. ...
Unit 2 Lesson 3
... the first Ethernet standards. These standards are the DIX Ethernet standards and are still in use today. As Ethernet topology became more popular, industry-wide standards became necessary. In 1985, the IEEE adopted the current Ethernet standards. These standards are called the IEEE 802.2 and 802.3 s ...
... the first Ethernet standards. These standards are the DIX Ethernet standards and are still in use today. As Ethernet topology became more popular, industry-wide standards became necessary. In 1985, the IEEE adopted the current Ethernet standards. These standards are called the IEEE 802.2 and 802.3 s ...
Mobile VPN for CDMA 3G Data Networking
... overhead over last-hop wireless links. Also, this is a less efficient, more costly use of radio resources. In volume-based charging scenarios for instance, such overhead could significantly increase corporate costs for remote connectivity. Voluntary tunneling carries a number of other drawbacks as w ...
... overhead over last-hop wireless links. Also, this is a less efficient, more costly use of radio resources. In volume-based charging scenarios for instance, such overhead could significantly increase corporate costs for remote connectivity. Voluntary tunneling carries a number of other drawbacks as w ...
Part I: Introduction
... • Datagram network is not either connection-oriented or connectionless. • Internet provides both connection-oriented (TCP) and connectionless services (UDP) to apps. Introduction ...
... • Datagram network is not either connection-oriented or connectionless. • Internet provides both connection-oriented (TCP) and connectionless services (UDP) to apps. Introduction ...
Wireless and Mobile Networks
... host: must associate with an AP scans channels, listening for beacon frames containing AP’s name (SSID) and MAC address selects AP to associate with may perform authentication will typically run DHCP to get IP address in AP’s subnet ...
... host: must associate with an AP scans channels, listening for beacon frames containing AP’s name (SSID) and MAC address selects AP to associate with may perform authentication will typically run DHCP to get IP address in AP’s subnet ...
Securing Information Transmission by Redundancy
... • A node is expected to receive multiple copies of one message • Successful if at least one copy is authentically received ...
... • A node is expected to receive multiple copies of one message • Successful if at least one copy is authentically received ...
Real-time Intrusion Detection and Classification
... detection speed and resource consumption. In addition our RT-IDS can classify normal network activities and main attack types consisting of Probe and Denial of Service (DoS). Hence, it helps to decrease time to diagnose and defense each network attack. The results show that our RT-IDS technique offe ...
... detection speed and resource consumption. In addition our RT-IDS can classify normal network activities and main attack types consisting of Probe and Denial of Service (DoS). Hence, it helps to decrease time to diagnose and defense each network attack. The results show that our RT-IDS technique offe ...
Understanding Traceroute
... packets. The first burst of three packets has a TTL of one hop, so they never get past the first router. Because these packets have used up their TTL count, the router will return a TE (or Time Exceeded) packet. Traceroute measures the delay between the original packet and the reply, which gives a v ...
... packets. The first burst of three packets has a TTL of one hop, so they never get past the first router. Because these packets have used up their TTL count, the router will return a TE (or Time Exceeded) packet. Traceroute measures the delay between the original packet and the reply, which gives a v ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... services, collaborative computing etc [1] [7]. This instant requirement has been furnished through Mobile Adhoc Network (MANETs). These networks have shown a revolutionary development as they are self configurable and self healable [4] [7]. Mobile adhoc networks are the networks, which consist of va ...
... services, collaborative computing etc [1] [7]. This instant requirement has been furnished through Mobile Adhoc Network (MANETs). These networks have shown a revolutionary development as they are self configurable and self healable [4] [7]. Mobile adhoc networks are the networks, which consist of va ...
Lecture 02 - Network Layer
... subnet portion of address of arbitrary length address format: a.b.c.d/x, where x is # bits in subnet portion of address subnet part ...
... subnet portion of address of arbitrary length address format: a.b.c.d/x, where x is # bits in subnet portion of address subnet part ...
Wireless LAN
... AP buffers packets to the sleeping nodes AP send Traffic Delivery Information Message (TDIM) that contains the list of nodes that will receive data in that frame, how much data and when? The node is awake only when it is sending data, receiving data or listening to TDIM. Univ. of Tehran ...
... AP buffers packets to the sleeping nodes AP send Traffic Delivery Information Message (TDIM) that contains the list of nodes that will receive data in that frame, how much data and when? The node is awake only when it is sending data, receiving data or listening to TDIM. Univ. of Tehran ...
Lab 9.2.7 IP Addressing Basics
... protocol in the world. The Internet or World Wide Web only uses IP addressing. In order for a host to access the Internet, it must have an IP address. In its basic form, the IP address has two parts: ...
... protocol in the world. The Internet or World Wide Web only uses IP addressing. In order for a host to access the Internet, it must have an IP address. In its basic form, the IP address has two parts: ...
Wide Area Networks
... Ñ 3. LECS assign LEC to a ELAN and direct them to a LES Ñ 4. LEC setups up connection to LES and registers addresses Ñ 5. LES assigns a BUS to the LEC Ñ 6. LEC queries LES for a MAC address to ATM address translation Ñ 7. LECS responds directly or forwards query to another LEC Ñ 8. MAC broadcasts ar ...
... Ñ 3. LECS assign LEC to a ELAN and direct them to a LES Ñ 4. LEC setups up connection to LES and registers addresses Ñ 5. LES assigns a BUS to the LEC Ñ 6. LEC queries LES for a MAC address to ATM address translation Ñ 7. LECS responds directly or forwards query to another LEC Ñ 8. MAC broadcasts ar ...
Routing in Future Internet
... • If users are able to configure paths, then Internet paths will be decoupled from routing protocols and agreements of ISPs. • The best path could be chosen according to user-level requirements. • The Internet must handle user-level metrics and the current ISPs would have to be adapted to provide th ...
... • If users are able to configure paths, then Internet paths will be decoupled from routing protocols and agreements of ISPs. • The best path could be chosen according to user-level requirements. • The Internet must handle user-level metrics and the current ISPs would have to be adapted to provide th ...
Chapter 2 Protocol Architecture - Department of Computer Science
... — Ethernet has many physical layer protocols: one for twisted-pair copper wire, another one for coaxial cable, some others for optical fiber, and so on. — IEEE 802.11b, 802.11a, 802.11g are different physical protocols for Wireless LAN, each with different transmission capabilities. ...
... — Ethernet has many physical layer protocols: one for twisted-pair copper wire, another one for coaxial cable, some others for optical fiber, and so on. — IEEE 802.11b, 802.11a, 802.11g are different physical protocols for Wireless LAN, each with different transmission capabilities. ...
2. SNMPv3 and Network Management
... • Notifications are not guaranteed to arrive at their destination. Management operations (such as get or set) can time out if the network is congested or the agent host is heavily loaded. • SNMP messages use the UDP protocol (best-effort ...
... • Notifications are not guaranteed to arrive at their destination. Management operations (such as get or set) can time out if the network is congested or the agent host is heavily loaded. • SNMP messages use the UDP protocol (best-effort ...
Network Technology and the Internet
... Cable Internet Connections Satellite dish “farm” or head-end Where TV broadcasts are received and retransmitted for cable connections ...
... Cable Internet Connections Satellite dish “farm” or head-end Where TV broadcasts are received and retransmitted for cable connections ...
Backgrounder
... company’s leadership in developing 10-Gigabit Ethernet, enables a common link-layer protocol for the entire network. The marriage of high-speed optical networks and the common Ethernet denominator means that many of the bottlenecks associated with current network topologies will be a thing of the pa ...
... company’s leadership in developing 10-Gigabit Ethernet, enables a common link-layer protocol for the entire network. The marriage of high-speed optical networks and the common Ethernet denominator means that many of the bottlenecks associated with current network topologies will be a thing of the pa ...
ppt
... In 1974 Vint Cerf co-wrote TCP/IP, the language that allows computers to communicate with one another. His wife of 35 years (Sigrid), hearing-impaired since childhood, began using the Internet in the early 1990s to research cochlear implants, electronic devices that work with the ear's own physiolog ...
... In 1974 Vint Cerf co-wrote TCP/IP, the language that allows computers to communicate with one another. His wife of 35 years (Sigrid), hearing-impaired since childhood, began using the Internet in the early 1990s to research cochlear implants, electronic devices that work with the ear's own physiolog ...
Niall Robinson
... Direct 10 Gb/s Ethernet (10GE) connections and OC192c services Routers prefer a single 10 Gb/s port over 4x2.5 Gb/s to optimize performance ...
... Direct 10 Gb/s Ethernet (10GE) connections and OC192c services Routers prefer a single 10 Gb/s port over 4x2.5 Gb/s to optimize performance ...
EC6802- Wireless Networks VIII semester ECE Two marks
... 5. What is Fast Retransmit algorithm in TCP? During TCP congestion control, when three or more duplicate ACKs are received, the sender does not even wait for a retransmission timer to expire before retransmitting the segment. This process is called the Fast Retransmit Algorithm. 6. What is Congestio ...
... 5. What is Fast Retransmit algorithm in TCP? During TCP congestion control, when three or more duplicate ACKs are received, the sender does not even wait for a retransmission timer to expire before retransmitting the segment. This process is called the Fast Retransmit Algorithm. 6. What is Congestio ...
Introduction to Routing and Packet Forwarding
... – R3 then strips off PPP frame – R3 Examines destination IP – R3 consults routing table looking for destination IP – After finding destination IP in routing table, R3 is directly connected to destination via its fast Ethernet interface – R3 re-encapsulates IP packet with a new Ethernet frame – R3 fo ...
... – R3 then strips off PPP frame – R3 Examines destination IP – R3 consults routing table looking for destination IP – After finding destination IP in routing table, R3 is directly connected to destination via its fast Ethernet interface – R3 re-encapsulates IP packet with a new Ethernet frame – R3 fo ...
WLAN and IEEE 802.11 Security
... nodes transmit over the air and hence anyone within the radio range can eavesdrop on the communication. So conventional security measures that apply to a wired network do not work in this case. ...
... nodes transmit over the air and hence anyone within the radio range can eavesdrop on the communication. So conventional security measures that apply to a wired network do not work in this case. ...
Wake-on-LAN
Wake-on-LAN (WoL) is an Ethernet or Token ring computer networking standard that allows a computer to be turned on or awakened by a network message.The message is usually sent by a program executed on another computer on the same local area network. It is also possible to initiate the message from another network by using subnet directed broadcasts or a WOL gateway service. Equivalent terms include wake on WAN, remote wake-up, power on by LAN, power up by LAN, resume by LAN, resume on LAN and wake up on LAN. In case the computer being awakened is communicating via Wi-Fi, a supplementary standard called Wake on Wireless LAN (WoWLAN) must be employed.The WOL and WoWLAN standards are often supplemented by vendors to provide protocol-transparent on-demand services, for example in the Apple Bonjour wake-on-demand (Sleep Proxy) feature.