implementing secure network administration procedures

... Trang 1PART VII Network Administration and TroubleshootingChapter 16 Backing Up and Restoring Cisco IOS Software and Configurations Chapter 17 Password Recovery Procedures and the Configuration ... — Changing the console line speed: ROM Monitor mode • Password-recovery procedures for Cisco routers • Password-recovery procedures for 2960 series switches The Configuration Register A Visual ... Password-Recovery Procedures for Cisco RoutersTIP: Make sure that after you change the console baud rate, you change your terminal program to match the same rate! Password-Recovery Procedures for

Ngày tải lên: 19/10/2013, 00:20

... 1Previous: 9.7 Mail Servers Chapter 9Configuring Network Servers Next: 10 sendmail 9.8 Summary This chapter covers several important TCP/IP network services Network File System (NFS) is the leading ... program reads the printer definitions from the printcap file. Network Information Service (NIS) is a server that distributes several system administrations databases It allows central control of and ... It also provides for dynamic address allocation, which allows a network to make maximum use of a limited set of addresses Large networks use distributed boot servers to avoid overloading a single

Ngày tải lên: 14/12/2013, 16:15

... UNCLASSIFIED I33-011R-2006 The 60 Minute Network Security Guide (First Steps Towards a Secure Network Environment) Systems and Network Attack Center (SNAC) Updated: May 15, 2006 ... services running on the network is to port scan. TCP/UDP Servers and Services on the Network Scan the network for all active TCP/UDP servers and services on each computer in the network. Shut down ... component it covers a wide range of network elements with the notion of providing a terse presentation of those most critical steps that should be taken to secure a network. While intentionally not

Ngày tải lên: 14/02/2014, 08:20

... Configure the Network Interface layer ● Configure the network (Internet and Transport layers) ● Configure and manage network applications Trang 16Course MapPreface-xvi Network Administration ... 1-1 Objectives 1-1 Introducing Network Model Fundamentals 1-2 Network Protocols 1-2 Network Model Concepts 1-3 Introducing the Layers of the TCP/IP Model 1-4 Network Interface Layer 1-5 Internet ... Ethernet Interfaces Describing ARP and RARPConfiguring the Network Interface Layer Trang 24Introducing Network Model Fundamentals1-2 Network Administration for the Solaris™ 9 Operating Environment

Ngày tải lên: 12/08/2014, 22:21

... the network? Trang 4Full-Duplex and Half-Duplex TransmissionFull-duplex network transmission occurs when a system simultaneouslysends and receives data on a bidirectional network Half-duplex network ... higher than 5 percent on a 10-Mbps Ethernet network,and 10 percent on a 100-Mbps Ethernet network, are the first indication of network overload ● Faulty network cabling frequently causes collisions ... attempt to transmit data onthe network at the same time Collision rates indicate the number ofcollisions that occur on a network Use collision rates to diagnose networkperformance problems that

Ngày tải lên: 12/08/2014, 22:21

... “fat network pipe.” Figure 6-3 Trunking Configuration Server Network links are aggregated into a "fat network pipe." Switch Clients Trang 22Implementing Multipathing6-4 Network Administration ... Increase network throughput and availability Describing the Transport Layer Configuring the Network Configuring IP MultipathingConfiguring Trang 20Increasing Network Throughput and Availability6-2 Network ... available to users if either of the multipath networkinterfaces fail or become unusable for any reason Trang 30Implementing Multipathing6-12 Network Administration for the Solaris™ 9 Operating

Ngày tải lên: 12/08/2014, 22:21

... Associating Network Name and Network Number To associate a network name to a network number, edit the /etc/inet/networks file The fields in the networks file are under the columns organized by network ... network name, network number, and nicknames sys11# tail -2 /etc/inet/networks one 192.168.1 one two 192.168.2 two sys11# When the networks file is modified, you can use the defined network name in ... error message from ICMP is generated The error message states No route to host or network is unreachable 7-12 Network Administration for the Solaris™ Operating Environment Copyright 2002 Sun Microsystems,

Ngày tải lên: 12/08/2014, 22:21

... sys23 is alive Trang 3Exercise Solutions40 Edit the contents of the/etc/networksfile, and add theone,two, three, and fournetwork names Routing Table: IPv4 Destination Gateway Flags Ref Use ... interface orsystem The ability to transmit network data in this way enables systemsthat are not included in the communication to efficiently ignore networkdata that is not addressed to them Link-Local ... new Network Information Service (NIS) IPv6 maps are the ipnodes.bynameandipnodes.byaddrmaps These maps havesimilar functionality to thehosts.bynameandhosts.byaddrfiles inIPv4 ● An additional Network

Ngày tải lên: 12/08/2014, 22:21

... devices need to communicate when there is no IPv6 network between them Introducing Tunnels IPv6-over-IPv4 tunnels connect IPv6 network devices over an IPv4network IPv6 datagrams are encapsulated in ... site-local address on your system While thepingutility is running, simulate a network failure and disconnect the networkinterface cable connected to the interface that you are using theping utility ... your systems You use both interfaces for standard networktraffic That is, your system runs at half of its potential capacity in theevent of a network failure on any of the two NICs You can use

Ngày tải lên: 12/08/2014, 22:21

... address-to-name translation Address-to-name translation isimportant and is used by varying utilities, such as Network File System(NFS), web servers, BIND, and sendmail The following is an example of a reverse-domain ... DHCP server This allows nomadic DHCPusers to have access to systems and services without manual administration To configure a server to allow dynamic updates to occur,complete the following steps: ... from other nsswitch.conffile by editing the hostsline and adding thedns keyword To ensure proper network interface configuration during theboot process, make sure that thefileskeyword is listed

Ngày tải lên: 12/08/2014, 22:21

... you where to specify the network address and asubnet mask This example uses the192.168.1.0network Figure 11-12 DHCP Configuration Wizard – Step 6 Window 8 Specify a network address by either ... leases;andDNSdmainandDNSserv, if DNS is configured The network address macro, whose name is the same as the network address of the client’s network Contains options withvalues determined by inputfrom ... andNIS+dom andNIS+serv, ifNIS+ is configured The network table for the network Creates an empty table untilyou create the IP addressesfor the network None, until you add the IPaddresses Table

Ngày tải lên: 12/08/2014, 22:21

... symbols.Specify the client classes that indicate the actual clients in your networkthat will be installing from the network Table 11-2 shows the values forcreating the symbols Table 11-2 Values ... vendor-client classes of the clients that you install from the network These names are examples of clientsyou might have on your network Creating Symbols to the Support the Solaris OE This section ... command: boot net:dhcp - install Boot device: /pci@1f,0/pci@1,1/network@1,1:dhcp File and args: - installBoot device: /pci@1f,0/pci@1,1/network@1,1:dhcp File and args: - install Trang 30The following

Ngày tải lên: 12/08/2014, 22:21

... 806-7009-10. ● System Administration Guide: Advanced Administration, Part Number 806-4074-10 ● System Administration Guide: IP Services, Part Number 806-4075-11. ● System Administration Guide: ... BasicsUses of NTP Many network applications need synchronized clocks to properly function For example: ● Encryption – This application often uses time as a component ofencryption keys ● Network management ... Associates, Inc., 2001 ● Comer, Douglas Internetworking with TCP/IP, Second Edition. Englewood Cliffs, NJ: Prentice Hall, 1991 ● Comer, Douglas E Internetworking With TCP/IP, Vol 1, Third Edition.

Ngày tải lên: 12/08/2014, 22:21

... Trang 2The Practice of System and Network AdministrationSecond Edition Trang 3This page intentionally left blank Trang 4The Practice of Systemand Network Administration Second Edition Thomas ... friends something and say, “That’s what my son does!” System Administration Matters System administration matters because computers and networks matter.Computers are a lot more important than they ... computer and network systems on behalf of another, such as an employer man-or a client SAs are the people who make things wman-ork and keep it all running Explaining What System Administration

Ngày tải lên: 14/08/2014, 14:20

... may have three network interfaces: one for the internal, protected network; one for the external, unprotected network; and one for a service network that is accessed from untrusted networks through ... Alternatively, if you can configure your network equipment to map a particular port to a particular network, you may be able to prewire everything A set of network patch panels is pictured in Figure ... keep the wiring neat as multiple network interfaces that belong on different networks, both the interfaces and the cables should be labeled Color coding the network cables can also help, perhaps

Ngày tải lên: 14/08/2014, 14:20

... Network Administration Study Guide 1Z0025 Oracle8i: Backup and Recovery 60 34 57% OCP: Oracle8i™ DBA Architecture & Administration and Backup & Recovery Study Guide 1Z0026 Oracle8i: Network Administration ... Two: OCP Oracle8i Network Administration Chapter 11 introduces the basic network architecture You will learn about the areas to consider when designing and implementing an Oracle network You will ... Architecture & Administration and Backup & Recovery Study Guide Copyright ©2000 SYBEX , Inc., Alameda, CA www.sybex.com Introduction xxix OCP: Oracle8i™ DBA Performance Tuning and Network Administration...

Ngày tải lên: 18/10/2013, 18:15

... Enable Securing Network Devices Question As a network engineer at securitytut.com, you are responsible for the network Which one will be necessarily taken into consideration when implementing Syslogging ... Area Network SAN Question Which two primary port authentication protocols are used with VSANs? (Choose two.) CHAP DHCHAP Securing Local Area Networks Question You suspect an attacker in your network ... For the following options, which feature is the foundation of Cisco Self-Defending Network technology? secure network platform Question Which type of intrusion prevention technology will be primarily...

Ngày tải lên: 29/10/2013, 00:50

... of very large networks Some of the protocols have only been used by large national and regional networks For local area networks, RIP is still the most common choice For larger networks, OSPF ... lead to networks One reason network routes are used is to reduce the size of the routing table An organization may have only one network but hundreds of hosts The Internet has thousands of networks ... for your network Minimal routing A network completely isolated from all other TCP/IP networks requires only minimal routing A minimal routing table usually is built by ifconfig when the network...

Ngày tải lên: 07/11/2013, 12:15

... configuration is not really a network administration task - rather, it is a basic part of UNIX system administration, whether or not the computer is connected to a network But TCP/IP networking, like other ... Net/Dest The Network/ Destination field shows the network or the destination host to which the interface provides access In our Ethernet examples, this field contains a network address The network ... are directly related to network configuration The first network configuration question is: Networking support (CONFIG_NET) [Y/n/?] Answer "yes" (y), which is the default Networking support is necessary...

Ngày tải lên: 14/12/2013, 16:15

... Configuring Network Servers Many TCP/IP networks are not connected to the Internet On these networks, TCP/IP is used for communication between the organization's various networks Private networks ... connected to the same network Gateways are needed to communicate with systems on other networks If the hosts on your network need to communicate with computers on other networks, a route through ... happens on the external networks Some routing decisions are thrust upon you by the external networks to which you connect In Figure 4.1 the local network connects to an external network that requires...

Ngày tải lên: 14/12/2013, 16:15