A Security Pattern for a Virtual Private Network
... • If the VPN connection is compromised, the attacker could get full access to the internal network. • Because of encryption, VPN traffic is invisible to IDS monitoring. If the IDS probe is outside the VPN server, as is often the case, then the IDS cannot see the traffic within the VPN tunnel. Theref ...
... • If the VPN connection is compromised, the attacker could get full access to the internal network. • Because of encryption, VPN traffic is invisible to IDS monitoring. If the IDS probe is outside the VPN server, as is often the case, then the IDS cannot see the traffic within the VPN tunnel. Theref ...
hierarchical routing
... routing table exchange would swamp links! m There are ~ 1 million links m If link state was flooded every 30 minutes seconds and each link state is 20B, then each router receives and processes 100kbps in link announcements m But, perhaps, only changes in link state could be distributed. ...
... routing table exchange would swamp links! m There are ~ 1 million links m If link state was flooded every 30 minutes seconds and each link state is 20B, then each router receives and processes 100kbps in link announcements m But, perhaps, only changes in link state could be distributed. ...
IP Addresses
... • IP provides an unreliable and connectionless service (“datagram service”). Unreliable: IP does not guarantee that a transmitted packet will be delivered. Connectionless: Each packet (“datagram”) is handled independently. IP is not aware that packets between hosts may be sent in a logical sequence. ...
... • IP provides an unreliable and connectionless service (“datagram service”). Unreliable: IP does not guarantee that a transmitted packet will be delivered. Connectionless: Each packet (“datagram”) is handled independently. IP is not aware that packets between hosts may be sent in a logical sequence. ...
Routing Information Protocol (RIP)
... about five routes for 200 s. How many timers are running at this time? ...
... about five routes for 200 s. How many timers are running at this time? ...
PDF file - The Open University of Hong Kong
... following links. Before the Web, individual Internet computers had windowing systems and graphical capabilities, but networking applications such as email and FTP were still text-based. The ease, convenience and graphical nature of the Web has made it the ‘killer’ application of the Internet. The We ...
... following links. Before the Web, individual Internet computers had windowing systems and graphical capabilities, but networking applications such as email and FTP were still text-based. The ease, convenience and graphical nature of the Web has made it the ‘killer’ application of the Internet. The We ...
Unit 1: Application Layer
... Commands ,which are sent from FTP client control process ,are in the form of ASCII uppercase. Commands can be divided in to six categories: ...
... Commands ,which are sent from FTP client control process ,are in the form of ASCII uppercase. Commands can be divided in to six categories: ...
Ch_22 - UCF EECS
... informational messages: echo request and echo reply messages. The echo-request and echo-reply messages are designed to check whether two devices in the Internet can communicate with each other. A host or router can send an echo-request message to another host; the receiving computer or router can re ...
... informational messages: echo request and echo reply messages. The echo-request and echo-reply messages are designed to check whether two devices in the Internet can communicate with each other. A host or router can send an echo-request message to another host; the receiving computer or router can re ...
Remote Equipment as Distributed Remote Objects using JAVA
... and hardware architecture. Although the VM runs under any operating systems such as Windows, Linux and Solaris, the VM has no direct interface to physical devices which are tightly implemented upon specific operating systems. Thus those physical devices are not accessible to control applications. Th ...
... and hardware architecture. Although the VM runs under any operating systems such as Windows, Linux and Solaris, the VM has no direct interface to physical devices which are tightly implemented upon specific operating systems. Thus those physical devices are not accessible to control applications. Th ...
Netwroking 2nd LEC B
... – Humans will continue to be tricked into giving out information they shouldn’t – Educating them may help a little here, but, depending on how bad you want the information, there are a lot of bad things you can do to get it ...
... – Humans will continue to be tricked into giving out information they shouldn’t – Educating them may help a little here, but, depending on how bad you want the information, there are a lot of bad things you can do to get it ...
SID :
... binding of remote programs possible. RPC server programs use ephemeral ports – thus the calling/client routine needs to access a well know port to be able to find those ports. Servers register themselves with a registrar - the port mapper (called rpcbind in Suns SVR4 and other systems using TI-RPC). ...
... binding of remote programs possible. RPC server programs use ephemeral ports – thus the calling/client routine needs to access a well know port to be able to find those ports. Servers register themselves with a registrar - the port mapper (called rpcbind in Suns SVR4 and other systems using TI-RPC). ...
Module 6
... • OSPF – A link-state interior routing protocol • EIGRP – Cisco’s advanced distance vector interior routing protocol • BGP – A distance vector exterior routing protocol ...
... • OSPF – A link-state interior routing protocol • EIGRP – Cisco’s advanced distance vector interior routing protocol • BGP – A distance vector exterior routing protocol ...
OpenFlow: Enabling Research in Production Networks
... – Academic research can have impact – Industry can benefit from academic research, improve products ...
... – Academic research can have impact – Industry can benefit from academic research, improve products ...
SNMPv1 Message
... Network Managed Devices. The interaction between these two entities is what SNMP was designed for, since “[S]NMP is predicated on the notion that you have a management station that polls an SNMP agent running on a remote device for information.”1 ...
... Network Managed Devices. The interaction between these two entities is what SNMP was designed for, since “[S]NMP is predicated on the notion that you have a management station that polls an SNMP agent running on a remote device for information.”1 ...
Quality of Service (QoS)-Based Management of Preempted Traffic in
... Preemption in MPLS Preempted traffic is served at best-effort level, and it becomes under the mercy of network load. Real-time bandwidth fraction is not well ...
... Preemption in MPLS Preempted traffic is served at best-effort level, and it becomes under the mercy of network load. Real-time bandwidth fraction is not well ...
ATM
... Service Digital Network architecture Goal: integrated, end-end transport of carry voice, video, data meeting timing/QoS requirements of voice, video (versus Internet best-effort model) “next generation” telephony: technical roots in telephone world packet-switching (fixed length packets, cal ...
... Service Digital Network architecture Goal: integrated, end-end transport of carry voice, video, data meeting timing/QoS requirements of voice, video (versus Internet best-effort model) “next generation” telephony: technical roots in telephone world packet-switching (fixed length packets, cal ...
Routing Information Protocol 2 (RIP2)
... minimal amount of information for router to route the packet and also very large amount of unused space. Subnet support : Supports subnet routes only within the subnet network Not secure; anyone can act as a router just by sending RIP-1 messages RIP1 was developed for an AS that originally included ...
... minimal amount of information for router to route the packet and also very large amount of unused space. Subnet support : Supports subnet routes only within the subnet network Not secure; anyone can act as a router just by sending RIP-1 messages RIP1 was developed for an AS that originally included ...
PDF file - The Open University of Hong Kong
... following links. Before the Web, individual Internet computers had windowing systems and graphical capabilities, but networking applications such as email and FTP were still text-based. The ease, convenience and graphical nature of the Web has made it the ‘killer’ application of the Internet. The We ...
... following links. Before the Web, individual Internet computers had windowing systems and graphical capabilities, but networking applications such as email and FTP were still text-based. The ease, convenience and graphical nature of the Web has made it the ‘killer’ application of the Internet. The We ...
1111 3333
... number of repeaters and segments on shared access Ethernet backbones in a tree topology. The 5-4-3 rule divides the network into two types of physical segments: populated (user) segments, and unpopulated (link) segments. User segments have users' systems connected to them. Link segments are used to ...
... number of repeaters and segments on shared access Ethernet backbones in a tree topology. The 5-4-3 rule divides the network into two types of physical segments: populated (user) segments, and unpopulated (link) segments. User segments have users' systems connected to them. Link segments are used to ...
Computer Communications
... – a formally defined procedure, which governs: • the communication format • its sequence • the meaning of its components ...
... – a formally defined procedure, which governs: • the communication format • its sequence • the meaning of its components ...
Comparison of IP Micromobility Protocols
... ■ Figure 1. a) A network of mobile routing points; b) a full network with intermediate nodes. ...
... ■ Figure 1. a) A network of mobile routing points; b) a full network with intermediate nodes. ...
INTERNET PROTOCOL IP datagram format is shown in
... In the internet model, the main network protocol is the Internet Protocol. Normal IP communication is between one sender and one receiver. However, for some applications it is useful for a process to be able to send to a large number of receivers simultaneously. Examples are updating replicated, ...
... In the internet model, the main network protocol is the Internet Protocol. Normal IP communication is between one sender and one receiver. However, for some applications it is useful for a process to be able to send to a large number of receivers simultaneously. Examples are updating replicated, ...
i-2 routing scalability
... Design goal of routing 1. Scalability (memory): e.g. sublinear RT size scaling 2. Quality (stretch): the length of a chosen path by a routing scheme compared to shortest path 3. Reliability: fast convergence upon topology changes while minimizing communication costs to maintain coherent non-local k ...
... Design goal of routing 1. Scalability (memory): e.g. sublinear RT size scaling 2. Quality (stretch): the length of a chosen path by a routing scheme compared to shortest path 3. Reliability: fast convergence upon topology changes while minimizing communication costs to maintain coherent non-local k ...
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).