OSI 7-Layer Model
... services that support FINGER; TELNET; NCP; APPC; AFP; applications; directly represents the services SMB that directly support user applications handles network access, flow control and error recovery Example apps are file transfer,e-mail, NetBIOSbased applications Gateway Translates from applicatio ...
... services that support FINGER; TELNET; NCP; APPC; AFP; applications; directly represents the services SMB that directly support user applications handles network access, flow control and error recovery Example apps are file transfer,e-mail, NetBIOSbased applications Gateway Translates from applicatio ...
slides 2
... Two connection models • Connectionless (or “datagram”): – each packet contains enough information that routers can decide how to get it to its final destination ...
... Two connection models • Connectionless (or “datagram”): – each packet contains enough information that routers can decide how to get it to its final destination ...
slides
... noticed a jam signal, stop, backoff. The time to backoff is picked randomly from [0,CW-1]. If collided again, double CW. Until CW is 1024. give up when tried 16 times. ...
... noticed a jam signal, stop, backoff. The time to backoff is picked randomly from [0,CW-1]. If collided again, double CW. Until CW is 1024. give up when tried 16 times. ...
NW_WK8x - carrieclasses
... Remote Access Policy Components • Composed of conditions, remote access permissions, and a profile – Conditions are criteria that must be met in order for remote access policy to apply to a connection – Remote access permission set in a remote access policy has only two options: Deny or Grant remot ...
... Remote Access Policy Components • Composed of conditions, remote access permissions, and a profile – Conditions are criteria that must be met in order for remote access policy to apply to a connection – Remote access permission set in a remote access policy has only two options: Deny or Grant remot ...
ppt - Computer Science Division
... • Switched communication networks – Information is transmitted to a sub-set of designated nodes • Examples: WANs (Telephony Network, Internet) ...
... • Switched communication networks – Information is transmitted to a sub-set of designated nodes • Examples: WANs (Telephony Network, Internet) ...
ppt - MMLab
... checking credentials so that only that user can install and modify the software running in its slice. 3. An owner trusts PLC to install software that is able to map network activity to the responsible slice. 4. PLC trusts owners to keep their nodes physically secure. ...
... checking credentials so that only that user can install and modify the software running in its slice. 3. An owner trusts PLC to install software that is able to map network activity to the responsible slice. 4. PLC trusts owners to keep their nodes physically secure. ...
Slide 1
... Gained Administrator access to servers in the data center Remote, physically isolated location where the IP Phones were located and believed to be “secure”. ...
... Gained Administrator access to servers in the data center Remote, physically isolated location where the IP Phones were located and believed to be “secure”. ...
Slide 1
... "As a large customer of Cisco wireless infrastructure and AirDefense wireless IDS, we saw a significant benefit in bringing together the two products to build a highly secure wireless network. The integration of these two major solutions should lower costs and improve security by enabling flexible d ...
... "As a large customer of Cisco wireless infrastructure and AirDefense wireless IDS, we saw a significant benefit in bringing together the two products to build a highly secure wireless network. The integration of these two major solutions should lower costs and improve security by enabling flexible d ...
View
... The advantages and disadvantages of tree topology are generally the same as those of star. The addition of secondary hubs bring more advantage: Allow more devices to be attached to a single central hub, therefore increase the distance a signal can travel between devices. ...
... The advantages and disadvantages of tree topology are generally the same as those of star. The addition of secondary hubs bring more advantage: Allow more devices to be attached to a single central hub, therefore increase the distance a signal can travel between devices. ...
Massimiliano Poletto Presentation
... - Add no latency or load on routers - Increase visibility into traffic (vs. what is available from routers) - Require no change to deployed devices - Allow incremental deployment with minimal change to infrastructure - Are invisible to attackers • Hierarchy and point-to-point communication among mon ...
... - Add no latency or load on routers - Increase visibility into traffic (vs. what is available from routers) - Require no change to deployed devices - Allow incremental deployment with minimal change to infrastructure - Are invisible to attackers • Hierarchy and point-to-point communication among mon ...
Suman Bannerjee, U Wisconsin, “Wireless Virtualization of
... • More careful tuning needed for smaller time slices – Need chipset vendor support for very small times ...
... • More careful tuning needed for smaller time slices – Need chipset vendor support for very small times ...
William Stallings Data and Computer Communications
... • Used by Routing Information Protocol (RIP) • Requires transmission of lots of information by each router — Distance vector to all neighbors — Contains estimated path cost to all networks in configuration — Changes take long time to propagate ...
... • Used by Routing Information Protocol (RIP) • Requires transmission of lots of information by each router — Distance vector to all neighbors — Contains estimated path cost to all networks in configuration — Changes take long time to propagate ...
HIPAA Security Standards
... the connection has been made, packets can flow between the hosts without further checking. • Proxy server: Intercepts all messages entering and leaving the network. The proxy server effectively hides the true network addresses. • In practice, many firewalls use two or more of these techniques in con ...
... the connection has been made, packets can flow between the hosts without further checking. • Proxy server: Intercepts all messages entering and leaving the network. The proxy server effectively hides the true network addresses. • In practice, many firewalls use two or more of these techniques in con ...
CWNA Guide to Wireless LANs,Third Edition
... Wi-Fi Protected Access (WPA) • Message Integrity Check (MIC): Designed to prevent attackers from capturing, altering, and resending data packets – Replaces CRC from WEP – CRC does not adequately protect data integrity ...
... Wi-Fi Protected Access (WPA) • Message Integrity Check (MIC): Designed to prevent attackers from capturing, altering, and resending data packets – Replaces CRC from WEP – CRC does not adequately protect data integrity ...
Left Focus Test Slide
... IPsec Access Control Security Policy Databases (SPDs) Separate for inbound and outbound traffic for each interface SPD entry specifies: drop bypass IPsec (protocols & algorithms) Traffic characterized by selectors: source/destination IP addresses (also bit masks & ranges) next pro ...
... IPsec Access Control Security Policy Databases (SPDs) Separate for inbound and outbound traffic for each interface SPD entry specifies: drop bypass IPsec (protocols & algorithms) Traffic characterized by selectors: source/destination IP addresses (also bit masks & ranges) next pro ...
Application Layer (Email, DNS, P2P)
... • user registers its IP address with central server when it comes online • user contacts central server to find IP addresses of buddies ...
... • user registers its IP address with central server when it comes online • user contacts central server to find IP addresses of buddies ...
View the full User Guide
... Meetings icon. All the available resources are related to user groups. (For the first time login, the server will “push” software such as a Java applet to your computer. Therefore, administrator privileges need to be granted to install it. If you are prompted to accept a certificate from the website ...
... Meetings icon. All the available resources are related to user groups. (For the first time login, the server will “push” software such as a Java applet to your computer. Therefore, administrator privileges need to be granted to install it. If you are prompted to accept a certificate from the website ...
IST 220-001: Networking and Telecommunications
... Most popular: inexpensive, easy to install and maintain. Based on a ring topology; but can use a star topology; Token-passing scheme to prevent collision of data; The second most widely-used protocol after Ethernet. Based on client/server model of network computing; Uses packet switching ...
... Most popular: inexpensive, easy to install and maintain. Based on a ring topology; but can use a star topology; Token-passing scheme to prevent collision of data; The second most widely-used protocol after Ethernet. Based on client/server model of network computing; Uses packet switching ...
Chapter 9
... information that the router uses in deciding which is the best path to a particular destination. The lower the administrative distance, the more trustworthy the source. If a path has the lowest administrative distance it is installed in the routing table. A route is not installed in the routing tabl ...
... information that the router uses in deciding which is the best path to a particular destination. The lower the administrative distance, the more trustworthy the source. If a path has the lowest administrative distance it is installed in the routing table. A route is not installed in the routing tabl ...