The unit of data, or packet, transmitted in a TCP/IP network. Each datagram contains source and destination addresses and data. See TCP/IP and UDP.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Cisco patches IOS vulnerabilities
- Cisco patched multiple vulnerabilities on Wednesday with the most important fixes covering data-link switching, IPv6 and VPN flaws. Among the highest rated patches (all rated 7 or above on a 10 scale): Cisco patched multiple vulnerabilities in the Data-link Switching DLSw feature in its...
- Blog posts 2008-03-26
- Akamai counters commoditization fears by extending WAN acceleration to business, communications applications
- Akamai's announcement this week of much broader acceleration benefits -- to all IP applications, including VOIP -- extends its WAN optimization capabilities into enterprises and out to remote users. The move comes as Akamai is facing perceptions its services are increasingly commodities, and therefore under downward price pressure. ...
- Blog posts 2007-10-09
- Secure CS-MARS
- Cisco Security Monitoring, Analysis, and Response System (CS-MARS) is a powerful tool that can dramatically increase your knowledge of activity on your network. But as a topology-aware SIM product, CS-MARS often contains sensitive information that needs to be protected from malicious users. If an attacker gains access to...
- Book chapters 2007-08-08
- Realtek network driver silently corrupts data
- Realtek network driver silently corrupts datathanksThat clears up a couple of blue screen mysteries that went away after changing a NIC.Not just the driverGeorge, TCP/IP is [b]supposed[/b] to be robust in cases like this -- bitflips lower in the stack [b]should[/b] be caught at the datagram level.If a driver error...
- Discussion threads 2007-07-29
- Application-Level QoS: Improving Video Conferencing Quality Through Sending the Best Packet Next
- In a traditional network stack, data from an application is all transmitted in the order that it is received. This paper proposes an algorithm where information about the priority of packets and expiry times is used by the transport layer to reorder or discard packets to optimise the use of...
- White papers 2007-06-28
- A New Prioritized Fast Handoff Protocol for Mobile IP
- Mobile IP protocol has been designed to handle global and seamless user's mobility on the Internet. However, Mobile IP suffers from handoff latency due to slow handoff discovery and binding association notification. To reduce this latency, the paper proposes a new handoff protocol where it attributes a high priority to...
- White papers 2006-11-19
- Towards a Framework for Network Control Composition
- IP networks nowadays perform many functions in addition to best-effort datagram forwarding. These functions are typically achieved via an ad hoc combination of distributed protocols, database- and tool-driven router configurations, and manual configurations. In such an ad hoc system, it is difficult to anticipate any potential harmful interactions among the...
- White papers 2006-09-15
- Performance of Constant Quality Video Applications Using the DCCP Transport Protocol
- The Datagram Congestion Control Protocol DCCP is a transport protocol that was developed by the IETF to provide an unreliable congestion controlled delivery of data packets. It removes the shortcomings of TCP and UDP for real-time applications, while combining the advantages of both these protocols. This paper studies the influence...
- White papers 2006-08-29
- High Speed Switch Scheduling for Local Area Networks
- Current technology trends make it possible to build communication networks that can support high performance distributed computing. This paper describes issues in the design of a prototype switch for an arbitrary topology point-to-point network with link speeds of up to one gigabit per second. The switch deals in fixed-length ATM-style...
- White papers 2006-08-17
- Avoiding the IP Fragmentation Process at the Application Layer of the OSI Reference Model
- The modern recommendations regarding the IP fragmentation process is to avoid it. There are different possibilities regarding the OSI model layers to implement logic for avoiding fragmentation. The present study describes some considerations about implementing the IP fragmentation avoiding at the Application Layer. The fragmentation and reassembly function ensures compatibility...
- White papers 2006-07-06
- Denial of Service Tuning for Cisco IOS Software Firewall and Intrusion Prevention System
- Cisco IOS Stateful Packet Inspection maintains counters of the number of "Half-open" TCP connections, as well as the total connection rate through the firewall and intrusion prevention software. These half-open connections are TCP connections that have not completed the SYN - SYN/ACK - ACK handshake that is always used by...
- White papers 2006-07-01
- sMonitor (zip)
- sMonitor is a network monitoring software that allows you to verify the network connectivity of TCP/IP hosts on the Internet and LAN. The built-in NT service periodically pings, or checks TCP and UDP ports on network devices. If the destination host fails to reply to a ping, connection request, or...
- Software downloads 2006-05-08
- An Evaluation Framework for the Analysis of Covert Channels in the TCP/IP Protocol Suite
- Information hiding techniques can be used by criminals and terrorists to communicate over covert channels within the TCP/IP protocol suite and can be used to overcome firewalls and most other forms of network intrusion detection and prevention systems. The work described in this paper is the covert channel concept and...
- White papers 2006-03-31
- Feature Comparison of the NXU-2 Vs. NXU-2A
- The principal feature of the JPS Communications NXU-2 Network Extension Unit is to provide a means to capture analog audio, used by land mobile radio systems (radio, basestation, dispatch console, etc), and convert that audio to digital datagram, which in turn, can be transported over a TCP/IP network in the...
- White papers 2006-02-03
- SYSLOG Enhancements for Cisco IOS EasyVPN Server
- The syslog messages discussed in this paper can easily be logged from a Cisco IOS EasyVPN server to an external syslog server. In Comma Separated Variable CSV format, these records can easily be loaded and processed by an external software application such as a spreadsheet or a database. The syslog...
- White papers 2006-01-01
- Detect and prevent hacking reconnaissance
- This sample chapter, taken from Penetration Testing and Network Defense, examines how you can discover live hosts on your target network by using various information-gathering techniques. Learn best practices for the detection and prevention of reconnaissance techniques.This sample chapter, taken from Cisco Press' Penetration Testing and Network...
- Book chapters 2005-11-18
- Why Google hired Vint Cerf
- Why Google hired Vint CerfWhy Google hired Vint Cerf[i]said databases filled with geographically indexed material will soon help people easily retrieve lists of local hospitals, ATMs or cafes on mobile devices.[/i]They hired him just for that?? My cell phone had an application I could download that did the very...
- Discussion threads 2005-09-09
- WinTFTP Pro (zip)
- WinTFTP Server Pro is a visual multithreaded Client/Server designed for network administrators and users to save configuration files from various network equipments like routers, VPN devices, smart hubs, network switches, CATV modems, network printers, and other devices which support TFTP protocol for writing configuration or firmware files. Also, the server...
- Software downloads 2005-09-01
- NSF dreaming of GENI
- Has it come to this? Has spyware, viruses, denial of service attacks, lack of transaction security, identity theft and all the rest made the Net such an workable place that it's time to wipe the slate clean? The National Science Foundation has proposed an initiative called Global Environment for...
- Blog posts 2005-08-30
- TCP Streaming for Low-Delay Wireless Video
- With the penetration and popularity of mobile devices such as pocket PCs and smart-phones, there is an increasing need of low-delay video streaming over wireless channel. Traditionally, UDP User Datagram Protocol is used for video streaming. However, due to unreliable transmission and fluctuating bandwidth of wireless channel, this requires error...
- White papers 2005-07-12
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- Access the latest Intel and industry best practices
-
Designed specifically to address the concerns of senior IT managers at organizations with more than 100 employees, the Intel Premier IT Professional Program provides best practices via local and e-Seminars and a members-only Web site.
- View the Intel Premier IT Professional web-site tour >>
Ultraportables
- Understanding Ultraportable Laptops (BNET)
- Five steps to protect mobile devices anywhere, anytime (TechRepublic)
- View all ZDNet Toshiba laptop reviews
- From our sponsors
- Toshiba Satellite® U400 Series
-
- The ultra-portable, ultra-stylish Satellite® U405 is a smart choice for you and your small business. Only from the laptop expert, Toshiba. Explore the complete laptop lineup »
-
