TCP Proxy
... Reverse Tunneling forced to intercept packets from MN to CN TCP Proxy uses MIP messages to determine MN connectivity CN is frozen by automatically sending a Zero Window Advertisment TCP Proxy starts sending data after receiving a MIP response and recovers CN by sending a nonzero Window Advertisment ...
... Reverse Tunneling forced to intercept packets from MN to CN TCP Proxy uses MIP messages to determine MN connectivity CN is frozen by automatically sending a Zero Window Advertisment TCP Proxy starts sending data after receiving a MIP response and recovers CN by sending a nonzero Window Advertisment ...
ATCP: TCP for Mobile Ad Hoc Networks
... a high bit error rate in mobile ad hoc networks, node connectivity tends to change over time. The rate at which the connectivity changes depend on the number of nodes, their velocity, transmission range and obstacles in the environment that may create shadows. There are two effects of this change in ...
... a high bit error rate in mobile ad hoc networks, node connectivity tends to change over time. The rate at which the connectivity changes depend on the number of nodes, their velocity, transmission range and obstacles in the environment that may create shadows. There are two effects of this change in ...
Chapter 5 outline
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
Chapter 5
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
Scalable Routing Strategies for Ad hoc Wireless Networks
... the more traditional cellular radio systems is the ability to operate without a xed, wired communications infrastructure, and to be rapidly deployed to support emergency requirements, short term needs and coverage in undeveloped areas. The applications of this wireless infrastructure range from civ ...
... the more traditional cellular radio systems is the ability to operate without a xed, wired communications infrastructure, and to be rapidly deployed to support emergency requirements, short term needs and coverage in undeveloped areas. The applications of this wireless infrastructure range from civ ...
Xerox Network Accounting Manual
... The MFP communicates with the PaperCut server over the network (e.g. to authenticate users or release print jobs). To provide an additional level of security, PaperCut may be configured to only allow device connections from a restricted range of network addresses. This ensures that only approved dev ...
... The MFP communicates with the PaperCut server over the network (e.g. to authenticate users or release print jobs). To provide an additional level of security, PaperCut may be configured to only allow device connections from a restricted range of network addresses. This ensures that only approved dev ...
Firewall/VPN PDF
... With the proliferation of bring your own devices (BYOD), companies must find a way to accommodate employees who use their personal phones and tablets for both work and personal use. One method is to maintain a separate WiFi for BYOD use. The WiFi network might be seen by the Web Security Service as ...
... With the proliferation of bring your own devices (BYOD), companies must find a way to accommodate employees who use their personal phones and tablets for both work and personal use. One method is to maintain a separate WiFi for BYOD use. The WiFi network might be seen by the Web Security Service as ...
PDF
... Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fa ...
... Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fa ...
About the VM-Series Firewall
... The VM-Series firewall is available in four models—VM-100, VM-200, VM-300, and VM-1000-HV. All four models can be deployed as guest virtual machines on VMware ESXi and on Citrix NetScaler SDX; on VMWare NSX, only the VM-1000-HV is supported. The software package (.xva or .ovf file) that is used to d ...
... The VM-Series firewall is available in four models—VM-100, VM-200, VM-300, and VM-1000-HV. All four models can be deployed as guest virtual machines on VMware ESXi and on Citrix NetScaler SDX; on VMWare NSX, only the VM-1000-HV is supported. The software package (.xva or .ovf file) that is used to d ...
Msc Jian Li 2013 - Department of Electrical and Computer
... requires a high bandwidth and a very high reliability. The WAN is often made up of fiber or ...
... requires a high bandwidth and a very high reliability. The WAN is often made up of fiber or ...
Document
... expandable, wired backhaul—the link to a provider’s core network. Wired fiber infrastructure can still carry vastly more data than any wireless system. [http://www.forbes.com/sites/techonom y/2012/04/01/the-future-of-wireless-iswired/] ...
... expandable, wired backhaul—the link to a provider’s core network. Wired fiber infrastructure can still carry vastly more data than any wireless system. [http://www.forbes.com/sites/techonom y/2012/04/01/the-future-of-wireless-iswired/] ...
Slides
... - Won't identify RDP over SSL - Won't identify RDP over SSH It's most useful when monitoring internal-to-internal sites "Success" != successful authentication - Still need to validate with non-network data ...
... - Won't identify RDP over SSL - Won't identify RDP over SSH It's most useful when monitoring internal-to-internal sites "Success" != successful authentication - Still need to validate with non-network data ...
Hell of a Handshake: Abusing TCP for Reflective
... Horst Görtz Institute for IT-Security, Ruhr-University Bochum, Germany Abstract Nowadays, a common way for attackers to perform Distributed Denial-of-Service (DDoS) attacks is via so called amplification attacks. The basic idea is to send relatively small requests with spoofed source address to pub ...
... Horst Görtz Institute for IT-Security, Ruhr-University Bochum, Germany Abstract Nowadays, a common way for attackers to perform Distributed Denial-of-Service (DDoS) attacks is via so called amplification attacks. The basic idea is to send relatively small requests with spoofed source address to pub ...
Nortel Secure Network Access 2.0 802.1X
... and the Network Access Protection (NAP) concurrently. These components interoperate, allowing customers to enforce security policies for network access using both NSNA and NAP. This architecture allows deployment of NAP clients with or without a Windows 2008 Server based Network Policy Server (NPS) ...
... and the Network Access Protection (NAP) concurrently. These components interoperate, allowing customers to enforce security policies for network access using both NSNA and NAP. This architecture allows deployment of NAP clients with or without a Windows 2008 Server based Network Policy Server (NPS) ...
Pi: A Practical Incentive Protocol for Delay Tolerant
... Abstract—Delay Tolerant Networks (DTNs) are a class of networks characterized by lack of guaranteed connectivity, typically low frequency of encounters between DTN nodes and long propagation delays within the network. As a result, the message propagation process in DTNs follows a store-carryand-forw ...
... Abstract—Delay Tolerant Networks (DTNs) are a class of networks characterized by lack of guaranteed connectivity, typically low frequency of encounters between DTN nodes and long propagation delays within the network. As a result, the message propagation process in DTNs follows a store-carryand-forw ...
Sample Title Slide Standard Template
... • Vista is the first time IPv6 is enabled by default in Windows • IPv6 has many implications for security that we have previously studied – (sorry, we haven't published on this as yet) ...
... • Vista is the first time IPv6 is enabled by default in Windows • IPv6 has many implications for security that we have previously studied – (sorry, we haven't published on this as yet) ...
Cisco Catalyst Instant Access FAQ
... Instant Access clients provision themselves automatically when they connect to an Instant Access parent. The Instant Access parent automatically does an image check on the newly connected Instant Access client. If the Instant Access client image is different from the image on the Instant Access pare ...
... Instant Access clients provision themselves automatically when they connect to an Instant Access parent. The Instant Access parent automatically does an image check on the newly connected Instant Access client. If the Instant Access client image is different from the image on the Instant Access pare ...
Chapter 1
... order that the entries occur in the router. • The router continues to process the ACL statements until it has a match. • You should have the most frequently used ACL entry at the top of the list. • If no matches are found when the router reaches the end of the list, the traffic is denied because the ...
... order that the entries occur in the router. • The router continues to process the ACL statements until it has a match. • You should have the most frequently used ACL entry at the top of the list. • If no matches are found when the router reaches the end of the list, the traffic is denied because the ...
Mobile Ad-hoc Clouds
... landscape. The ease of access to a pool of devices is much more arbitrary and based purely on the needs of the user. This pool can act as a provider of an infrastructure for various services that can be processed with volunteer node participation, where the node in the vicinity is itself a service p ...
... landscape. The ease of access to a pool of devices is much more arbitrary and based purely on the needs of the user. This pool can act as a provider of an infrastructure for various services that can be processed with volunteer node participation, where the node in the vicinity is itself a service p ...
A Robust Push-to-Talk Service for Wireless Mesh Networks
... RTP packets to ensure that the end-node receives it). In our approach, we intercept DTMF signals for control purposes between the end-client and the mesh. For example, a client dials “#12#” to join PTT group 12. In the same way, every time a user wishes to speak, pressing “5” or any pre-defined key ...
... RTP packets to ensure that the end-node receives it). In our approach, we intercept DTMF signals for control purposes between the end-client and the mesh. For example, a client dials “#12#” to join PTT group 12. In the same way, every time a user wishes to speak, pressing “5” or any pre-defined key ...
DATA-LINK-LAYER - e
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
2509, 2510, 2511, 2512 User Guide
... Note Means reader take note. Notes contain helpful suggestions or references to materials ...
... Note Means reader take note. Notes contain helpful suggestions or references to materials ...
- Mitra.ac.in
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
data-link layer
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
... A’s data link layer sends frame R’s data link layer receives frame R removes IP datagram from Ethernet frame, sees its destined to B R uses ARP to get B’s physical layer address R creates frame containing A-to-B IP datagram sends to B ...
Wireless security
Wireless security is the prevention of unauthorized access or damage to computers using wireless networks. The most common types of wireless security are Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA). WEP is a notoriously weak security standard. The password it uses can often be cracked in a few minutes with a basic laptop computer and widely available software tools. WEP is an old IEEE 802.11 standard from 1999, which was outdated in 2003 by WPA, or Wi-Fi Protected Access. WPA was a quick alternative to improve security over WEP. The current standard is WPA2; some hardware cannot support WPA2 without firmware upgrade or replacement. WPA2 uses an encryption device that encrypts the network with a 256-bit key; the longer key length improves security over WEP.Many laptop computers have wireless cards pre-installed. The ability to enter a network while mobile has great benefits. However, wireless networking is prone to some security issues. Hackers have found wireless networks relatively easy to break into, and even use wireless technology to hack into wired networks. As a result, it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources. Wireless Intrusion Prevention Systems (WIPS) or Wireless Intrusion Detection Systems (WIDS) are commonly used to enforce wireless security policies.The risks to users of wireless technology have increased as the service has become more popular. There were relatively few dangers when wireless technology was first introduced. Hackers had not yet had time to latch on to the new technology, and wireless networks were not commonly found in the work place. However, there are many security risks associated with the current wireless protocols and encryption methods, and in the carelessness and ignorance that exists at the user and corporate IT level. Hacking methods have become much more sophisticated and innovative with wireless access. Hacking has also become much easier and more accessible with easy-to-use Windows- or Linux-based tools being made available on the web at no charge.Some organizations that have no wireless access points installed do not feel that they need to address wireless security concerns. In-Stat MDR and META Group have estimated that 95% of all corporate laptop computers that were planned to be purchased in 2005 were equipped with wireless cards. Issues can arise in a supposedly non-wireless organization when a wireless laptop is plugged into the corporate network. A hacker could sit out in the parking lot and gather information from it through laptops and/or other devices, or even break in through this wireless card–equipped laptop and gain access to the wired network.