Introduction CS 239 Security for Networks and System
... Backscatter • Some attacks are based on massive spoofing of IP addresses – Particularly distributed denial of service attacks • Packets are typically reasonably well formed • If target gets them, it will reply to them • This can be helpful CS 236, Spring 2008 ...
... Backscatter • Some attacks are based on massive spoofing of IP addresses – Particularly distributed denial of service attacks • Packets are typically reasonably well formed • If target gets them, it will reply to them • This can be helpful CS 236, Spring 2008 ...
Networks
... network that spans a metropolitan area or campus. • Its geographic scope falls between a WAN and LAN. • MANs provide Internet connectivity for LANs in a metropolitan region, and connect them to wider area networks like the Internet. • The MAN technologies are similar to the WAN ...
... network that spans a metropolitan area or campus. • Its geographic scope falls between a WAN and LAN. • MANs provide Internet connectivity for LANs in a metropolitan region, and connect them to wider area networks like the Internet. • The MAN technologies are similar to the WAN ...
Dealing with multiple clients
... identifier attached to most network adapters (NICs Network Interface Card). It is a number that acts like a name for a particular network adapter, so, for example, the network cards (or built-in network adapters) in two different computers will have different names, or MAC addresses, as would an Eth ...
... identifier attached to most network adapters (NICs Network Interface Card). It is a number that acts like a name for a particular network adapter, so, for example, the network cards (or built-in network adapters) in two different computers will have different names, or MAC addresses, as would an Eth ...
NAT (NAPT/PAT), STUN, and ICE
... mapping from the private side of the network. • STUN client Ù STUN server in the network, which echo’s information back. • Asks different questions (scans ip address and ports) to answer the question – what type of NAT is running on your broadband router, and how to modify the private ip address’ an ...
... mapping from the private side of the network. • STUN client Ù STUN server in the network, which echo’s information back. • Asks different questions (scans ip address and ports) to answer the question – what type of NAT is running on your broadband router, and how to modify the private ip address’ an ...
Trouble shooting guide
... browser and type http://www.google.ie The browser should browse to this Internet website. ...
... browser and type http://www.google.ie The browser should browse to this Internet website. ...
Hands-on Networking Fundamentals
... • Uses of LAN transmission equipment – Connecting devices on a single network – Creating and linking multiple networks or subnetworks – Setting up some enterprise networks ...
... • Uses of LAN transmission equipment – Connecting devices on a single network – Creating and linking multiple networks or subnetworks – Setting up some enterprise networks ...
UNIT name: IP protocol
... Explorer, SMBCLIENT in Linux, etc). If one Application does not work in the network, there is possibility, that this application is wrongly configured, or there is problems in lower layers. You can test then some other applications first and then if others are not working too, start to test lower la ...
... Explorer, SMBCLIENT in Linux, etc). If one Application does not work in the network, there is possibility, that this application is wrongly configured, or there is problems in lower layers. You can test then some other applications first and then if others are not working too, start to test lower la ...
Wireless Security
... up to 54Mbps in the 5 GHz band. uses OFDM rather than FHSS or DSSS. Security:enhanced security features with 152-bit WEP encryption and MAC address filtering but not as reliable as wi-fi 802.11i: Security enhancement to WEP.Uses TKIP(Temporal Key Integrity Protocol) 802.1x: provide enhanced security ...
... up to 54Mbps in the 5 GHz band. uses OFDM rather than FHSS or DSSS. Security:enhanced security features with 152-bit WEP encryption and MAC address filtering but not as reliable as wi-fi 802.11i: Security enhancement to WEP.Uses TKIP(Temporal Key Integrity Protocol) 802.1x: provide enhanced security ...
Document
... • An open standard that is defined within RFC 2131, Dynamic Host Configuration Protocol • Microsoft was the first manufacturer to implement DHCP • Provides an automated means of managing host IP addresses ...
... • An open standard that is defined within RFC 2131, Dynamic Host Configuration Protocol • Microsoft was the first manufacturer to implement DHCP • Provides an automated means of managing host IP addresses ...
3rd Edition: Chapter 4 - Communications Systems Center (CSC)
... IP addresses: how to get one? Q: How does network get subnet part of IP addr? A: gets allocated portion of its provider ISP’s address space (or space assigned to organization*). Autonomous Systems (AS) buy connectivity from ISPs. Small companies may lease IP addresses from ISP as ...
... IP addresses: how to get one? Q: How does network get subnet part of IP addr? A: gets allocated portion of its provider ISP’s address space (or space assigned to organization*). Autonomous Systems (AS) buy connectivity from ISPs. Small companies may lease IP addresses from ISP as ...
Document
... at once). A 2" diameter coaxial cable can carry up to 5,500 channels 2. Coaxial cables can be bundled together into a much larger cable for ease of installation. 3. Can be placed underground & laid on the floors of lakes and oceans. 4. Allow for high-speed data transmission are used in high-service ...
... at once). A 2" diameter coaxial cable can carry up to 5,500 channels 2. Coaxial cables can be bundled together into a much larger cable for ease of installation. 3. Can be placed underground & laid on the floors of lakes and oceans. 4. Allow for high-speed data transmission are used in high-service ...
Performance of Backtracking and Retracting in NOC
... different nodes in a network are connected and how they communicate. There are number of network topology in NOC architecture such as mesh torus, ring, tree star etc. Mesh based network topology is one of the most commonly used on chip network topology. In mesh topology, the implementation of routin ...
... different nodes in a network are connected and how they communicate. There are number of network topology in NOC architecture such as mesh torus, ring, tree star etc. Mesh based network topology is one of the most commonly used on chip network topology. In mesh topology, the implementation of routin ...
D E A L I N G W... J A C K S — S W I T...
... One problem we encounter with Ethernet jacks in a public place is that of users unplugging their laptop from the net and walking away without closing the session. In this case, we need the gateway to know that the user has gone away, and to remove filter rules allowing their machine access to the In ...
... One problem we encounter with Ethernet jacks in a public place is that of users unplugging their laptop from the net and walking away without closing the session. In this case, we need the gateway to know that the user has gone away, and to remove filter rules allowing their machine access to the In ...
Historical Overview
... • Client/server applications – Two computers and two applications involved – Communication occurs three levels • Hardware, operating system, application • Dependent on one computer addressing the other ...
... • Client/server applications – Two computers and two applications involved – Communication occurs three levels • Hardware, operating system, application • Dependent on one computer addressing the other ...
group7
... Unicast – For sending contents to Routing Controllers Boradcast – For GetContent Queries() Use UDP for packet transfer – No need for TCP Control. If Packet fails, host requests retransmission TCP for CreateEntry() ...
... Unicast – For sending contents to Routing Controllers Boradcast – For GetContent Queries() Use UDP for packet transfer – No need for TCP Control. If Packet fails, host requests retransmission TCP for CreateEntry() ...
Routing algorithms
... 1c can then use iBGP do distribute this new prefix reach info to all routers in AS1 1b can then re-advertise the new reach info to AS2 over the 1b-to-2a eBGP session When router learns about a new prefix, it creates an entry for the prefix in its forwarding table. 3c ...
... 1c can then use iBGP do distribute this new prefix reach info to all routers in AS1 1b can then re-advertise the new reach info to AS2 over the 1b-to-2a eBGP session When router learns about a new prefix, it creates an entry for the prefix in its forwarding table. 3c ...
BCI ATN Router
... User Interface • Router has Graphical User Interface (GUI) – Intuitive and – Not dependent on Operating System or User Terminals ...
... User Interface • Router has Graphical User Interface (GUI) – Intuitive and – Not dependent on Operating System or User Terminals ...
Lesson 2-3: Ethernet Basics
... Communication protocols for Ethernet networks encompass both the datalink and physical layers of the OSI model. This lesson deals mainly with the data-link layer, which is subdivided into a Media Access Control layer and a Logical Link Control layer. Lesson 2-4 covers physical layer issues. Ethernet ...
... Communication protocols for Ethernet networks encompass both the datalink and physical layers of the OSI model. This lesson deals mainly with the data-link layer, which is subdivided into a Media Access Control layer and a Logical Link Control layer. Lesson 2-4 covers physical layer issues. Ethernet ...
Wireless Ethernet ()
... Systems should have a data format that has a unique structure with added security features, including network and address validation Data can be encrypted using a high-security encryption algorithm Send messages on an Exception Reporting protocol instead of ...
... Systems should have a data format that has a unique structure with added security features, including network and address validation Data can be encrypted using a high-security encryption algorithm Send messages on an Exception Reporting protocol instead of ...
Donated Equipment, Supplies and Services
... These updates are recommended by CCH but may not be necessary. TrueCrypt must be used on AARP purchased or donated computers where specified. TrueCrypt or a National Office approved equitant can be used on other computers. Not recommended because of potential lost of use due to SecureDoc software. N ...
... These updates are recommended by CCH but may not be necessary. TrueCrypt must be used on AARP purchased or donated computers where specified. TrueCrypt or a National Office approved equitant can be used on other computers. Not recommended because of potential lost of use due to SecureDoc software. N ...
Networking Components and Devices
... method, but it is more reliable. In addition, the delay caused by store-and-forward switching increases with the packet size. The delay caused by cut-through switching is always the same— only the address portion of the packet is read, and this is always the same size, regardless of the size of the ...
... method, but it is more reliable. In addition, the delay caused by store-and-forward switching increases with the packet size. The delay caused by cut-through switching is always the same— only the address portion of the packet is read, and this is always the same size, regardless of the size of the ...
Havana, Cuba 8
... Not Eligible Users 2 Km. @ 512 Kbps ETECSA access network to support a service of BTV, MPEG-2, and it consisted on the design of a Hybrid Network that simulates the solution used by Orange in its Elegible Users service of IPTV, which ≤ 500 m @ 4 Mbps allows to increase the covering of a service of B ...
... Not Eligible Users 2 Km. @ 512 Kbps ETECSA access network to support a service of BTV, MPEG-2, and it consisted on the design of a Hybrid Network that simulates the solution used by Orange in its Elegible Users service of IPTV, which ≤ 500 m @ 4 Mbps allows to increase the covering of a service of B ...
PDF
... The 170W (both AC and DC) power supplies have enough power for the base unit and the PoE. Connect one power output from the 170W PSU to the main power input of the IE2000U, and the other power output of the 170W PSU to the PoE power input of the IE2000U. ...
... The 170W (both AC and DC) power supplies have enough power for the base unit and the PoE. Connect one power output from the 170W PSU to the main power input of the IE2000U, and the other power output of the 170W PSU to the PoE power input of the IE2000U. ...
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.