MCSE TestMaster: Internetworking Microsoft TCP/IP on Windows

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The second segment of a URL is an IP address or Host Name14. The question remaining is, has this document helped at all, or is it just another rework of old information? If you suspect this case, try asking for "WORKGROUP", parts of the target's DNS name, and other likely strings like variants on the name of the organization or people within it. Dotted decimal format and is a Class C network. 32. There are different steps or ways to configure the TCP/IP network on the operating system.

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The second segment of a URL is an IP address or Host Name14. The question remaining is, has this document helped at all, or is it just another rework of old information? If you suspect this case, try asking for "WORKGROUP", parts of the target's DNS name, and other likely strings like variants on the name of the organization or people within it. Dotted decimal format and is a Class C network. 32. There are different steps or ways to configure the TCP/IP network on the operating system.

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Guide to TCP/IP (02) by Chappell, Laura A - Tittel, Ed

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The QNX NTP daemon supports both server and client modes. The section on Windows programming is also included. For example, a datagram addressed to the multicast address 225.0.0.5 would be sent to the (Ethernet) MAC address 01-00-5E-00-00-05. There are many Application layer protocols and new protocols are always being developed. A history of the PING program, by its original author. On a basic ethernet network, for example, a computer sends messages directly onto the transmission medium.

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The QNX NTP daemon supports both server and client modes. The section on Windows programming is also included. For example, a datagram addressed to the multicast address 225.0.0.5 would be sent to the (Ethernet) MAC address 01-00-5E-00-00-05. There are many Application layer protocols and new protocols are always being developed. A history of the PING program, by its original author. On a basic ethernet network, for example, a computer sends messages directly onto the transmission medium.

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Tcp/Ip Solutions for Vm/Esa

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Lightweight directory access protocol (LDAP) is a directory service protocol that provides access to a directory over a Transmission Control Protocol (TCP). NT almost always sets up a predefined set of hidden administrative "default" shares, named "C$" for the whole C drive, "D$" for the whole D drive if present, and "ADMIN$" or perhaps "WINNT$" pointing into the top of the system directory. Netizens: An Anthology, by http://www.columbia.edu/~rh120/ ftp://wuarchive.wustl.edu/doc/misc/acn/netbook/ Books related pages: 1.

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Lightweight directory access protocol (LDAP) is a directory service protocol that provides access to a directory over a Transmission Control Protocol (TCP). NT almost always sets up a predefined set of hidden administrative "default" shares, named "C$" for the whole C drive, "D$" for the whole D drive if present, and "ADMIN$" or perhaps "WINNT$" pointing into the top of the system directory. Netizens: An Anthology, by http://www.columbia.edu/~rh120/ ftp://wuarchive.wustl.edu/doc/misc/acn/netbook/ Books related pages: 1.

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*IR Enhanced Guide to TCP/IP

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They merely allow for alternative wiring schemes. A good example of UDP is an online radio station that sends data but does not confirm data delivery. But as the demand for digital data transmission increases, so does the use of TCP/IP in other media, such as telephony and air- and radio-wave broadcasting. Windows includes protection that allows it to detect and adjust when the system is being targeted with a SYN flood attack (a type of denial of service attack).

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They merely allow for alternative wiring schemes. A good example of UDP is an online radio station that sends data but does not confirm data delivery. But as the demand for digital data transmission increases, so does the use of TCP/IP in other media, such as telephony and air- and radio-wave broadcasting. Windows includes protection that allows it to detect and adjust when the system is being targeted with a SYN flood attack (a type of denial of service attack).

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Using TCP/IP

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This layer repackages the data again into Ethernet packets or some other protocol for final physical transmission. What is the correlation between the ISO OSI protocols and TCP/IP? So first up, restart Windows into Safe Mode with Networking. At least one password- snarfing DLL is in the works for NT, as are security-targeted registry editors and NTFS tools. Routing and option information allows the user to select the printer to be used and the processing to be done.

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This layer repackages the data again into Ethernet packets or some other protocol for final physical transmission. What is the correlation between the ISO OSI protocols and TCP/IP? So first up, restart Windows into Safe Mode with Networking. At least one password- snarfing DLL is in the works for NT, as are security-targeted registry editors and NTFS tools. Routing and option information allows the user to select the printer to be used and the processing to be done.

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TCP Variants over Mobile Adhoc Network: An Scheme to

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They have now become the most commonly used protocol suite on PC LANs. DNS zone dumps in conjunction with tools such as "fping" can quickly locate active machines. Windows Server 2003 with SP2 Conceptually. SMB blocks can be up to 65536 bytes long *excluding* the length integer, but in practice the blocks are usually smaller. The header is added or deleted as up and down each layer of the network stack. The NIC to be used for packet transmission is searched by using the dst_entry.

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They have now become the most commonly used protocol suite on PC LANs. DNS zone dumps in conjunction with tools such as "fping" can quickly locate active machines. Windows Server 2003 with SP2 Conceptually. SMB blocks can be up to 65536 bytes long *excluding* the length integer, but in practice the blocks are usually smaller. The header is added or deleted as up and down each layer of the network stack. The NIC to be used for packet transmission is searched by using the dst_entry.

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tcp/ip for windows nt 4.x

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The membership of a host group is dynamic; that is, hosts may join and leave groups at any time. IP multicasting is used to provide efficient multicast services to clients that may not be located on the same network segment. In 1985 the National Science Foundation (NSF) created NSFNet and connected it to the then-existing Internet. 9.125.87.0 255.255.255.0 *DIRECT *YES *DFTROUTE *NONE 9.125.87.169 *YES EtherTalk allows a Macintosh computer to communicate on an ___________________ network.

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The membership of a host group is dynamic; that is, hosts may join and leave groups at any time. IP multicasting is used to provide efficient multicast services to clients that may not be located on the same network segment. In 1985 the National Science Foundation (NSF) created NSFNet and connected it to the then-existing Internet. 9.125.87.0 255.255.255.0 *DIRECT *YES *DFTROUTE *NONE 9.125.87.169 *YES EtherTalk allows a Macintosh computer to communicate on an ___________________ network.

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Secure E-Business in Tcp/Ip Networks on Os/390 and Z/OS

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Dynamic reconfiguration of interfaces and automatic clearing of IP routing tables have been added to RouteD to improve useability. See System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP). Any failed login usually causes the server to delay for 2 or 3 seconds before sending the SMB "access denied" error, to slow down brute-force attacks. The FTP protocol is commonly used through computer programs known as "FTP Clients". In most cases it will not be necessary to manually add this routing entry.

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Dynamic reconfiguration of interfaces and automatic clearing of IP routing tables have been added to RouteD to improve useability. See System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP). Any failed login usually causes the server to delay for 2 or 3 seconds before sending the SMB "access denied" error, to slow down brute-force attacks. The FTP protocol is commonly used through computer programs known as "FTP Clients". In most cases it will not be necessary to manually add this routing entry.

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Internet: Terms and TCP/IP Basics

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The logging problem is a pain in the butt. RFC 1006 defines a protocol mapping component to enable these programs to be used in a TCP/IP network. In the case of Full Duplex support, a discovery process may be needed to allow this layer to know that bi-directional conversations make take place at the same time. The command is now defunct and has been replaced by ―IP server-name ip any‖ 12. Some of its protocols may not fit cleanly into the OSI model, although RFCs sometimes refer to it and often use the old OSI layer numbers.

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The logging problem is a pain in the butt. RFC 1006 defines a protocol mapping component to enable these programs to be used in a TCP/IP network. In the case of Full Duplex support, a discovery process may be needed to allow this layer to know that bi-directional conversations make take place at the same time. The command is now defunct and has been replaced by ―IP server-name ip any‖ 12. Some of its protocols may not fit cleanly into the OSI model, although RFCs sometimes refer to it and often use the old OSI layer numbers.

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Eudora by QUALCOMM: Electronic mail software for TCP/IP

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Objectives Identify the characteristics of TCP/IP, IPX/SPX, NetBIOS, and AppleTalk Understand how network protocols correlate."— Presentation transcript: 2 Objectives Identify the characteristics of TCP/IP, IPX/SPX, NetBIOS, and AppleTalk Understand how network protocols correlate to layers of the OSI Model Identify the core protocols of the TCP/IP suite and describe their functions Identify the well-known ports for key TCP/IP services Describe the purpose and implementation of DNS (Domain Name System) and WINS (Windows Internet Naming Service) 3 Introduction to Protocols Protocols vary according to purpose, speed, transmission efficiency, utilization of resources, ease of setup, compatibility, and ability to travel between different LANs Multiprotocol networks: networks running more than one protocol Most popular protocol suite is TCP/IP –Others: IPX/SPX, NetBIOS, and AppleTalk 4 TCP/IP (Transmission Control Protocol/Internet Protocol ) Suite of specialized subprotocols –TCP, IP, UDP, ARP, and many others De facto standard on Internet –Protocol of choice for LANs and WANs Protocols able to span more than one LAN are routable Can run on virtually any combination of NOSs or network media TCP/IP core protocols operate in Transport or Network layers 5 The TCP/IP Core Protocols: TCP (Transmission Control Protocol) Provides reliable data delivery services –Operates in Transport layer –Connection-oriented –Ensures reliable data delivery through sequencing and checksums –Provides flow control Port hosts address where an application makes itself available to incoming or outgoing data 6 The TCP/IP Core Protocols: TCP (continued) A TCP segment 7 IP (Internet Protocol) Provides information about how and where data should be delivered –Data’s source and destination addresses –Network layer protocol –Enables TCP/IP to internetwork –Unreliable, connectionless protocol IP datagram: packet, in context of TCP/IP –Envelope for data 11 ARP (Address Resolution Protocol) Network layer protocol –Obtains MAC (physical) address of host Creates database that maps MAC address to host’s IP (logical) address ARP table or cache: local database containing recognized MAC-to-IP address mappings –Dynamic ARP table entries created when client makes ARP request that cannot be satisfied by data already in ARP table –Static ARP table entries entered manually using ARP utility 12 RARP (Reverse Address Resolution Protocol) Allows client to broadcast MAC address and receive IP address in reply –If device doesn’t know own IP address, cannot use ARP RARP server maintains table of MAC addresses and associated IP addresses 13 Addressing in TCP/IP IP core protocol responsible for logical addressing –IP Address: unique 32-bit number Divided into four octets separated by periods 0 reserved as placeholder referring to entire group of computers on a network 255 reserved for broadcast transmissions 14 Assigning IP Addresses Nodes on a network must have unique IP addresses Static IP address: manually assigned –Can easily result in duplication of addresses Most network administrators rely on network service to automatically assign IP addresses 16 Host Names and DNS (Domain Name System): Domain Names Every host can take a host name Every host is member of a domain –Group of computers belonging to same organization and has part of their IP addresses in common –Domain name usually associated with company or other type of organization Fully qualified host name: local host name plus domain name Domain names must be registered with an Internet naming authority that works on behalf of ICANN 17 Some TCP/IP Application Layer Protocols Telnet: terminal emulation protocol used to log on to remote hosts using TCP/IP protocol suite –TCP connection established –Keystrokes on user’s machine act like keystrokes on remotely connected machine FTP (File Transfer Protocol): Application layer protocol used to send and receive files via TCP/IP –Server and clients –FTP commands work from OS’s command prompt –Anonymous logons 19 Some TCP/IP Application Layer Protocols (continued) Packet Internet Groper (PING): utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating Pinging: –Echo request and echo reply –Can ping either an IP address or a host name –Pinging loopback address,, to determine whether workstation’s TCP/IP services are running 21 The IPX and SPX Protocols Internetwork Packet Exchange (IPX): provides logical addressing and internetworking services –Operates at Network layer –Similar to IP –Connectionless Sequenced Packet Exchange (SPX): Works with IPX to ensure data received whole, in sequence, and error free –Belongs to Transport layer –Connection-oriented 23 Addressing in IPX/SPX Each node on network must be assigned unique address –IPX address Network address: chosen by network administrator Node address: by default equal to network device’s MAC address 24 NetBIOS and NetBEUI NetBIOS originally designed to provide Transport and Session layer services for applications running on small, homogenous networks Microsoft added standard Transport layer component called NetBEUI –Efficient on small networks Consumes few network resources Provides excellent error correction –Does not allow for good security –Few possible connections –Cannot be routed 26 Addressing in NetBEUI Network administrators must assign NetBIOS name to each workstation After NetBIOS has found workstation’s NetBIOS name, it discovers workstation’s MAC address –Uses this address in further communications 28 AppleTalk Protocol suite originally designed to interconnect Macintosh computers –Can be routed between network segments and integrated with NetWare-, UNIX-, Linux-, or Microsoft- based networks AppleTalk network separated into logical groups of computers called AppleTalk zones –Enable users to share file and printer resources AppleTalk node ID: Unique 8- or 16-bit number that identifies computer on an AppleTalk network

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Objectives Identify the characteristics of TCP/IP, IPX/SPX, NetBIOS, and AppleTalk Understand how network protocols correlate."— Presentation transcript: 2 Objectives Identify the characteristics of TCP/IP, IPX/SPX, NetBIOS, and AppleTalk Understand how network protocols correlate to layers of the OSI Model Identify the core protocols of the TCP/IP suite and describe their functions Identify the well-known ports for key TCP/IP services Describe the purpose and implementation of DNS (Domain Name System) and WINS (Windows Internet Naming Service) 3 Introduction to Protocols Protocols vary according to purpose, speed, transmission efficiency, utilization of resources, ease of setup, compatibility, and ability to travel between different LANs Multiprotocol networks: networks running more than one protocol Most popular protocol suite is TCP/IP –Others: IPX/SPX, NetBIOS, and AppleTalk 4 TCP/IP (Transmission Control Protocol/Internet Protocol ) Suite of specialized subprotocols –TCP, IP, UDP, ARP, and many others De facto standard on Internet –Protocol of choice for LANs and WANs Protocols able to span more than one LAN are routable Can run on virtually any combination of NOSs or network media TCP/IP core protocols operate in Transport or Network layers 5 The TCP/IP Core Protocols: TCP (Transmission Control Protocol) Provides reliable data delivery services –Operates in Transport layer –Connection-oriented –Ensures reliable data delivery through sequencing and checksums –Provides flow control Port hosts address where an application makes itself available to incoming or outgoing data 6 The TCP/IP Core Protocols: TCP (continued) A TCP segment 7 IP (Internet Protocol) Provides information about how and where data should be delivered –Data’s source and destination addresses –Network layer protocol –Enables TCP/IP to internetwork –Unreliable, connectionless protocol IP datagram: packet, in context of TCP/IP –Envelope for data 11 ARP (Address Resolution Protocol) Network layer protocol –Obtains MAC (physical) address of host Creates database that maps MAC address to host’s IP (logical) address ARP table or cache: local database containing recognized MAC-to-IP address mappings –Dynamic ARP table entries created when client makes ARP request that cannot be satisfied by data already in ARP table –Static ARP table entries entered manually using ARP utility 12 RARP (Reverse Address Resolution Protocol) Allows client to broadcast MAC address and receive IP address in reply –If device doesn’t know own IP address, cannot use ARP RARP server maintains table of MAC addresses and associated IP addresses 13 Addressing in TCP/IP IP core protocol responsible for logical addressing –IP Address: unique 32-bit number Divided into four octets separated by periods 0 reserved as placeholder referring to entire group of computers on a network 255 reserved for broadcast transmissions 14 Assigning IP Addresses Nodes on a network must have unique IP addresses Static IP address: manually assigned –Can easily result in duplication of addresses Most network administrators rely on network service to automatically assign IP addresses 16 Host Names and DNS (Domain Name System): Domain Names Every host can take a host name Every host is member of a domain –Group of computers belonging to same organization and has part of their IP addresses in common –Domain name usually associated with company or other type of organization Fully qualified host name: local host name plus domain name Domain names must be registered with an Internet naming authority that works on behalf of ICANN 17 Some TCP/IP Application Layer Protocols Telnet: terminal emulation protocol used to log on to remote hosts using TCP/IP protocol suite –TCP connection established –Keystrokes on user’s machine act like keystrokes on remotely connected machine FTP (File Transfer Protocol): Application layer protocol used to send and receive files via TCP/IP –Server and clients –FTP commands work from OS’s command prompt –Anonymous logons 19 Some TCP/IP Application Layer Protocols (continued) Packet Internet Groper (PING): utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating Pinging: –Echo request and echo reply –Can ping either an IP address or a host name –Pinging loopback address,, to determine whether workstation’s TCP/IP services are running 21 The IPX and SPX Protocols Internetwork Packet Exchange (IPX): provides logical addressing and internetworking services –Operates at Network layer –Similar to IP –Connectionless Sequenced Packet Exchange (SPX): Works with IPX to ensure data received whole, in sequence, and error free –Belongs to Transport layer –Connection-oriented 23 Addressing in IPX/SPX Each node on network must be assigned unique address –IPX address Network address: chosen by network administrator Node address: by default equal to network device’s MAC address 24 NetBIOS and NetBEUI NetBIOS originally designed to provide Transport and Session layer services for applications running on small, homogenous networks Microsoft added standard Transport layer component called NetBEUI –Efficient on small networks Consumes few network resources Provides excellent error correction –Does not allow for good security –Few possible connections –Cannot be routed 26 Addressing in NetBEUI Network administrators must assign NetBIOS name to each workstation After NetBIOS has found workstation’s NetBIOS name, it discovers workstation’s MAC address –Uses this address in further communications 28 AppleTalk Protocol suite originally designed to interconnect Macintosh computers –Can be routed between network segments and integrated with NetWare-, UNIX-, Linux-, or Microsoft- based networks AppleTalk network separated into logical groups of computers called AppleTalk zones –Enable users to share file and printer resources AppleTalk node ID: Unique 8- or 16-bit number that identifies computer on an AppleTalk network

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