Hunt, Craig, TCP/IP Network Administration, O'Reilly & Assoc., 1992.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....of the Web is much smaller than the Web itself, search engines still require a substantial investment in hardware and network bandwidth that can only grow worse. Domain Name Service The Domain Name Service (DNS) maps Internet host names such as tuck.cs.fit.edu to IP addresses such as 163.118.22. 3 [Hunt, 1992]. This is a true distributed database. Instead of replicating the database at every server (as was done originally when the Internet had only a few hundred computers) the data is organized into a tree: com edu uk . mit fit berkeley . ee cs math . zach tuck ss5a ....

Hunt, Craig, TCP/IP Network Administration, O'Reilly & Assoc., 1992.

....extend the problem domain we address. 2.3 SAMPLE NETWORK CONFIGURATION PROBLEM Network configuration is the setting, collecting and storing of the parameters of all the devices on the network, such as hosts, gateways, etc. The process of configuration is complex and it addresses several aspects [7]: 1. Configuring the network interface which must be known to the protocol software, since a variety of physical networks are currently used. 2. Routing, that allows traffic to reach its destination. 3. Name service, to identify network nodes by names, not only by their equivalent addresses. ....

.... hard coded into programs and tables on different hosts. Data in this database is usually replicated at different sites in a network, and the inconsistencies and inaccuracies in this database are one of the most common sources of network errors as well as one of the most difficult to detect [1] [7]. 4.2 DATA GATHERING One of the difficulties in modeling a network is that it is in general possible to actually observe data only in 2 places: 1. as it crosses the interface between the user and the application program (i.e. the FTP client) on the user s host computer; 2. as it travels on the ....

C. Hunt, TCP/IP Network Administration, O'Reilly & Associates, Inc., 1992.

....between the constituents of the AVANTI architecture. Moreover, we will outline various user modeling policies. Encryption techniques provide the basis for secure information flow. Link encryption based on the hardware of network connections (i.e. on layer 1 or 2 of the ISO OSI reference model [12]) provides a simple and transparent means for keeping transport data private (see e.g. the proposed Internet Protocol standard IPv6 [11] In order to take advantage of link encryption as an end to end service, all physical nodes within a communication channel have to support this kind of ....

Hunt, C.: TCP/IP Network Administration, O'Reilly & Associates, Sebastopol, California, 1992.

....model is necessary for platforms which do not allow multithreading as will be discussed in Section 4.5. In our current design we make use of low level packages for both communication and multithreading. The actual modules used vary from system to system, but include systems like MPI [29] TCP IP [24], and POSIX threads [25] These low level components can be seen as part of the virtual machine on top of which an Opus application will be executed. calls to ORS and VFC Runtime F90 source code VFC HPF source code calls to ORS Opus Compiler (OC) F90 VFC Library Executable Program Opus ....

....data parallel runtime system. 6 Implementation Status and Preliminary Results We have implemented a prototype of the ORS on the MEIKO CS2 as well as on a cluster of Solaris Workstations. The implementation was mainly done in Fortran 90. The ORS is based on mpich [16] on the Meiko) and on TCP IP [24] (on Workstations) respectively, as well as on the native Solaris pthreads implementation. This prototype is currently restricted to the task parallel features of Opus. Although the implementation of the compiler is not yet completely finished, we have handcompiled a simple version of the ....

C. Hunt. TCP/IP Network Administration. O'Reilly and Associates, Inc., 1997.

....false positive error occurs when a self string is classified as anomalous, and a false negative error occurs when a nonself string is classified as normal (see figure 2) 3. 1 Representation of network traffic In our application of the model, each event is represented by a TCP IP SYN packet header [7]. We consider only SYN packets because all following packets on the same connection represent the same datapath triple as the original SYN packets. Furthermore, the volume of data is greatly reduced because there are typically more than 1000 normal packets to every SYN packet. Monitoring only ....

C. Hunt. TCP/IP Network Administration. O'Reilly and Associates, Sebastopol, CA, 1992.

....causes and how to Error Message Possible causes 1. No answer Remote system did not respond 2. Network unreachable Local system has no route to remote system 3. Unknown host Remote host s name can not be resolved by name service into an IP address Table 1: Common ping error messages according to [Hun98] find possible solutions. 3 Dealing with the No answer problem The no answer error message shows that the local host has a route to the remote host in its routing table and so can send out packets to the remote host. However, due to some reasons, yet to be established, the remote host can not ....

....These three fields are paramount. If any of them is misconfigured then the interface will totally misbehave. A misconfigured subnet mask reveals itself in that the host can reach other hosts on its local subnet and remote hosts on distant networks, but can not reach hosts on other local subnets [Hun98]. This problem will definitely be fished out by ifconfig and consequently presented for correction. Incorrectly configured IP addresses also do occur. If the network part of an IP address is incorrect then every ping to this host will fail with the no answer error message. The ifconfig command ....

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C. Hunt. TCP/IP Network Administration. O'Reilly, 1998.

....Domain Name Service (DNS) 18] consists of a method for constructing names of host computers in a hierarchical manner and a way to resolve these names in a distributed fashion. The Berkeley Internet Name Domain (BIND) is a set of procedures used to map DNS names to IP addresses and vice versa [1] [11]. It consists of a number of server daemons running at various locations in the Internet, each with the responsibility of resolving a subset of the names. On OSF 1 [5] a name is resolved as follows: 1. The file etc svc.conf is consulted to see what services are available and in what order they ....

Hunt, C., TCP/IP Network Administration, O'Reilly & Associates, Inc., Sebastopol, CA, 1994.

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Hunt, C. TCP/IP Network Administration. Sebastopol, CA: O'Reilly & Associates, Inc., 1992.

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Hunt, Craig,TCP/IP Network Administration, O'Reilly & Associates, Inc., Sebastopol, CA, 1992.

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Craig Hunt. TCP/IP Network Administration. O'Reilley & Associates, Inc. Sebastopol, CA., 1992.

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Hunt, Craig: TCP/IP Network Administration. O'Reilly & Assoc., Inc., 1992.

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Hunt, Craig, TCP/IP Network Administration, O'Reilly & Assoc., 1992.

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