IP Addressing
... Subnetting is done by allocating some of the leading bits of the host number to indicate a subnet number. With subnetting, the network prefix and the subnet number make up an extended network prefix. The extended prefix can be expressed in terms of a subnetmask or, using CIDR notation, by adding ...
... Subnetting is done by allocating some of the leading bits of the host number to indicate a subnet number. With subnetting, the network prefix and the subnet number make up an extended network prefix. The extended prefix can be expressed in terms of a subnetmask or, using CIDR notation, by adding ...
CHAP06
... The IP address shortage was one of the reasons behind the IPv6, providing in theory, 3.2 x 1038 possible addresses. ...
... The IP address shortage was one of the reasons behind the IPv6, providing in theory, 3.2 x 1038 possible addresses. ...
Chapter 2
... Internet Protocol (IP) are the two protocols that support the Internet operation. TCP controls the assembly of a message into smaller packets before it is transmitted over the Internet. The IP protocol includes rules for routing individual data packets from their source to their destination. ...
... Internet Protocol (IP) are the two protocols that support the Internet operation. TCP controls the assembly of a message into smaller packets before it is transmitted over the Internet. The IP protocol includes rules for routing individual data packets from their source to their destination. ...
Coexisting Networked Systems
... As illustrated by the building example, systems that traditionally run independently to support a building’s operation are now being interconnected. Such connection raises the questions on why some of these devices have to be separate, and the possibility of multi-function devices that merge the exi ...
... As illustrated by the building example, systems that traditionally run independently to support a building’s operation are now being interconnected. Such connection raises the questions on why some of these devices have to be separate, and the possibility of multi-function devices that merge the exi ...
PPT of Network Topology
... 3. Bus Topology • In networking a bus is the central cable -- the main wire -- that connects all devices on a local-area network (LAN). It is also called the backbone. This is often used to describe the main network connections composing the Internet. Bus networks are relatively inexpensive and eas ...
... 3. Bus Topology • In networking a bus is the central cable -- the main wire -- that connects all devices on a local-area network (LAN). It is also called the backbone. This is often used to describe the main network connections composing the Internet. Bus networks are relatively inexpensive and eas ...
DENIAL OF SERVICE ATTACK
... • An attacker sends two fragments that cannot be reassembled properly by manipulating the offset value of packet and cause reboot or halt of victim ...
... • An attacker sends two fragments that cannot be reassembled properly by manipulating the offset value of packet and cause reboot or halt of victim ...
Chapter 8: Network Security
... This can result from a DNS attack, in which false information is entered in a Domain Name Server or the name service cache of the customer’s computer. This leads to translating a correct URL into an incorrect IP address—the address of a false website. A protocol that ensures that you really are talk ...
... This can result from a DNS attack, in which false information is entered in a Domain Name Server or the name service cache of the customer’s computer. This leads to translating a correct URL into an incorrect IP address—the address of a false website. A protocol that ensures that you really are talk ...
Addressing security threats and vulnerabilities
... – Breaking the encryption algorithm or guessing the key used by the algorithm ...
... – Breaking the encryption algorithm or guessing the key used by the algorithm ...
Malware Hunter: Building an Intrusion Detection System (IDS) to
... programs communicating with other similar programs in order to perform tasks. This can be of any type such as taking control of an Internet Relay Chat (IRC) channel or sending of spam mail or participation in DDoS attacks. Botnet is a name constructed by joining the terms robot and network[3][4]. Th ...
... programs communicating with other similar programs in order to perform tasks. This can be of any type such as taking control of an Internet Relay Chat (IRC) channel or sending of spam mail or participation in DDoS attacks. Botnet is a name constructed by joining the terms robot and network[3][4]. Th ...
Chapter 12
... achieved through a network interface card (NIC) which fits into a PC’s expansion slot and contains the circuitry necessary for inter-node communications. • A server is used to store the network operating system, application programs, and data to be shared. ...
... achieved through a network interface card (NIC) which fits into a PC’s expansion slot and contains the circuitry necessary for inter-node communications. • A server is used to store the network operating system, application programs, and data to be shared. ...
Physical Carrier Sense Method
... • The network’s modified topology also allows multiple messages to be sent at one time. • For example, computer A can send a message to computer B at the same time that computer C sends one to computer D. • If two computers send frames to the same destination at the same time, the switch stores the ...
... • The network’s modified topology also allows multiple messages to be sent at one time. • For example, computer A can send a message to computer B at the same time that computer C sends one to computer D. • If two computers send frames to the same destination at the same time, the switch stores the ...
lecture11 - Academic Csuohio
... • By aggregating the three entries, a router has reduced its table size by two entries • Aggregation is heavily used throughout the Internet C: 11000010 00011000 00000000 00000000 11111111 11111111 11111000 00000000 E: 11000010 00011000 00001000 00000000 11111111 11111111 11111100 00000000 O: 110000 ...
... • By aggregating the three entries, a router has reduced its table size by two entries • Aggregation is heavily used throughout the Internet C: 11000010 00011000 00000000 00000000 11111111 11111111 11111000 00000000 E: 11000010 00011000 00001000 00000000 11111111 11111111 11111100 00000000 O: 110000 ...
LVRJ Case study
... actionable control panel for a single view of all user activity and security incidents across the Review-Journal LAN. About ConSentry Networks ConSentry Networks secures enterprise LANs with a purpose-built system that preserves data integrity, ensures network availability and supports regulatory co ...
... actionable control panel for a single view of all user activity and security incidents across the Review-Journal LAN. About ConSentry Networks ConSentry Networks secures enterprise LANs with a purpose-built system that preserves data integrity, ensures network availability and supports regulatory co ...
CMPE 155 - University of California, Santa Cruz
... Protect organization’s network from attacks originating outside network. ...
... Protect organization’s network from attacks originating outside network. ...
Slide 1
... enables systems on a TCP/IP network to share status and error information. You can use the status information to detect network trouble. ICMP messages are capsulated within IP datagrams so that they may be routed throughout a network. Two programs that use ICMP messages are Ping and Tracert. You can ...
... enables systems on a TCP/IP network to share status and error information. You can use the status information to detect network trouble. ICMP messages are capsulated within IP datagrams so that they may be routed throughout a network. Two programs that use ICMP messages are Ping and Tracert. You can ...
Lecture 1 - Lane Department of Computer Science and Electrical
... Demand for better networks is dramatically increasingTelecommunications companies are racing to get better computer networking capabilities to home, businesses and communities Has become the political center of attention – with government agencies pushing initiatives to get greater network connectiv ...
... Demand for better networks is dramatically increasingTelecommunications companies are racing to get better computer networking capabilities to home, businesses and communities Has become the political center of attention – with government agencies pushing initiatives to get greater network connectiv ...
ch07 - Cisco Academy
... • And obtain special operating system privileges – To perform unauthorized functions and hide all traces of its existence ...
... • And obtain special operating system privileges – To perform unauthorized functions and hide all traces of its existence ...
presentation source
... • family specifies the protocol family (PF_INET for TCP/IP). • type specifies the type of service (SOCK_STREAM, SOCK_DGRAM). • protocol specifies the specific protocol (usually 0 which means the default). ...
... • family specifies the protocol family (PF_INET for TCP/IP). • type specifies the type of service (SOCK_STREAM, SOCK_DGRAM). • protocol specifies the specific protocol (usually 0 which means the default). ...
PPT slides
... Active Networks • Nodes (routers) receive packets: – Perform computation based on their internal state and control information carried in packet – Forward zero or more packets to end points depending on result of the computation ...
... Active Networks • Nodes (routers) receive packets: – Perform computation based on their internal state and control information carried in packet – Forward zero or more packets to end points depending on result of the computation ...
lan
... ARP protocol • A wants to send datagram to B, and A knows B’s IP address. • Suppose B’s MAC address is not in A’s ARP table. • A broadcasts ARP query packet, containing B's IP address – all machines on LAN receive ARP query • B receives ARP packet, replies to A with its (B's) MAC address – frame se ...
... ARP protocol • A wants to send datagram to B, and A knows B’s IP address. • Suppose B’s MAC address is not in A’s ARP table. • A broadcasts ARP query packet, containing B's IP address – all machines on LAN receive ARP query • B receives ARP packet, replies to A with its (B's) MAC address – frame se ...
Document
... oriented, reliable, end-to-end, with flow control. It assures the data delivery in the same sending order, without losses. • TCP implements a connection reliable mechanism called Three way handshake ...
... oriented, reliable, end-to-end, with flow control. It assures the data delivery in the same sending order, without losses. • TCP implements a connection reliable mechanism called Three way handshake ...