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Overview
Configuring IP Addresses
Configuring Windows Firewall
Troubleshooting IP Addresses
Determining TCP/IP Name Resolution Methods
Configuring a DNS Client and a WINS Client
Connecting to a Remote Host
Lesson: Configuring IP Addresses
Assigning Static IP Addresses
Overview of Dynamic Address Assignment
Using DHCP to Automate IP Address Assignments
Enabling an Alternate IP Configuration
Assigning Static IP Addresses
Client with StaticAddressing
Specifies192.168.2.15
Specifies192.168.2.15
Overview of Dynamic Address Assignment
Yes
Assign IPaddress
Assign IPaddress
Assign alternateIP address
Assign alternateIP address
Yes
NoAutomatic Private IP address
generates IP address
Automatic Private IP address
generates IP address
NoIs alternate IP configured?
Is alternate IP configured?
Dynamic address
Alternate static address
Automatic private IP Address
Client with DynamicAddressing
Is DHCPavailable?Is DHCP
available?
Request for IP address
Request for IP address
DHCP Server
Enabling Alternate IP Configuration
Alternate IP configuration:Alternate IP configuration:
Specifies an alternate IP address if DHCP is unavailable
Provides alternate configuration options
• Automatic private IP address• User configured
Specifies an alternate IP address if DHCP is unavailable
Provides alternate configuration options
• Automatic private IP address• User configured
Lab A: Configuring IP Addresses for Windows XP Professional
Exercise 1: Configuring Windows XP Professional to Use Static TCP/IP Addressing
Exercise 2: Configuring Windows XP Professional to Use DHCP for IP Address Assignment
Exercise 3: Configuring Windows XP Professional to Use an Alternate TCP/IP Configuration
Lesson: Configuring Windows Firewall
Using Global Configuration
Using Group Policy Support
Using On with No Exceptions Operational Mode
Using Static Port Openings
Configuring Basic ICMP Options
Logging Dropped Packets and Successful Connections
Using Global Configuration
Applies all new configurations and configuration changes to all network connections
Configuration can still be performed on a per-interface basis
Using Group Policy Support
With Windows XP Service Pack 2, every configuration option can be set through Group Policy
New configuration options:
Operational mode (On, On with no exceptions, Off)
Allowed Programs on the exceptions list
Opened static ports
ICMP settings
Enable RPC and DCOM
Enable File and Printer Sharing
Using On with No Exceptions Operational Mode
Keeps Windows Firewall enabled while only solicited traffic is allowed
Blocks all unsolicited requests to connect to your computer
Blocks unsolicited requests to share files or printers, and discovery of network devices
To turn on with no exceptions: To turn on with no exceptions:
Open Windows Firewall Open Windows Firewall 11
Select Don't allow exceptions check box, and then click OK Select Don't allow exceptions check box, and then click OK 33
On the General tab, click On On the General tab, click On 22
Using Static Port Openings
In Windows XP Service Pack 2:
Ports are configured to receive only network traffic that has a source address
When file sharing ports are opened, the local subnet restriction is applied by default
Recommendation:
Apply local subnet restriction to static ports that are communicating on a local network
Configuring Basic ICMP Options
Enable ICMP options when needed; disable after troubleshooting
ICMP options are disabled by default
To enable ICMP:To enable ICMP:
Open Windows Firewall Open Windows Firewall 11
In the ICMP dialog box, select check box beside each type of ICMP message to be enabled
In the ICMP dialog box, select check box beside each type of ICMP message to be enabled
33
On the Advanced tab, under ICMP, click Settings On the Advanced tab, under ICMP, click Settings
22
To create an ICMP exception:To create an ICMP exception:
Open Windows FirewallOpen Windows Firewall11
In Network Connection Settings section, select the connection that will have an exception, and then click Settings
In Network Connection Settings section, select the connection that will have an exception, and then click Settings
33
In the Windows Firewall dialog box, click Advanced tab In the Windows Firewall dialog box, click Advanced tab
22
In the Advanced Settings dialog box, click ICMP tab In the Advanced Settings dialog box, click ICMP tab
44
To enable security logging:To enable security logging: To locate and open log file:To locate and open log file:
Logging Dropped Packets and Successful Connections
Windows Firewall can keep a security log of dropped packets and successful connections
Open Windows Firewall Open Windows Firewall
Click OK to close the Log Settings dialog boxClick OK to close the Log Settings dialog box
In the Windows Firewall dialog box, click Advanced tab. Open the Log Settings dialog box
In the Windows Firewall dialog box, click Advanced tab. Open the Log Settings dialog box
Open Windows Firewall Open Windows Firewall
In the Log Settings dialog box, under Log File Options section, click Save As
In the Log Settings dialog box, under Log File Options section, click Save As
In the Windows Firewall dialog box, click Advanced tab. Open Log Settings dialog box
In the Windows Firewall dialog box, click Advanced tab. Open Log Settings dialog box
In the Browse dialog box, right-click the pfirewall.txt file and then choose Open
In the Browse dialog box, right-click the pfirewall.txt file and then choose Open
11
33
2211
33
22
44
Lab B: Configuring Windows Firewall for Windows XP Professional
Exercise: Configuring Windows Firewall
Lesson: Troubleshooting IP Addresses
Using TCP/IP Troubleshooting Utilities
Using ipconfig to Troubleshoot IP Addressing
Using Repair to Troubleshoot IP Problems
Using ping to Troubleshoot IP Addressing
Using TCP/IP Troubleshooting Utilities
Common TCP/IP diagnostic utilities include the following:
arp
hostname
ipconfig
ping
pathping
tracert
Additional commands:Additional commands:
Using ipconfig to Troubleshoot IP Addressing
The command prompt ipconfig is used to:The command prompt ipconfig is used to:
View TCP/IP information
Verify the TCP/IP configuration options on a host
View TCP/IP information
Verify the TCP/IP configuration options on a host
ipconfig /release
ipconfig /renew
ipconfig /release
ipconfig /renew
Using Repair to Troubleshoot IP Problems
Repair attempts to refresh stored data related to connections, and to renew registration
Used to:
Release DHCP address Flush ARP Flush NetBIOS and DNS local caches
To repair a LAN or high-speed Internet connection:To repair a LAN or high-speed Internet connection:
Open Network ConnectionsOpen Network Connections11
If your connection does not work after you click Repair this connection, try additional steps If your connection does not work after you click Repair this connection, try additional steps 33
Under LAN or High-Speed Internet, click connection to be repaired, and then, under Network Tasks, click Repair this connection Under LAN or High-Speed Internet, click connection to be repaired, and then, under Network Tasks, click Repair this connection 22
Using ping to Troubleshoot IP Addressing
Testing IP Configuration:Testing IP Configuration:
Ping 127.0.0.1 (loopback address)Ping 127.0.0.1 (loopback address)11
Ping IP address of the default gatewayPing IP address of the default gateway33
Ping IP address of the remote hostPing IP address of the remote host44
Ping IP address of the computerPing IP address of the computer22
Lab C: Troubleshooting IP Addresses for Windows XP Professional
Exercise 1: Troubleshooting IP Addresses by Using ipconfig
Exercise 2: Troubleshooting IP Addresses by Using Repair
Lesson: Determining TCP/IP Name Resolution Methods
Types of Names
Mapping Names: Dynamic or Static Tables
Dynamic IP Mapping
Static IP Mapping
Selecting a Name Resolution Method
The Host Name Resolution Process
The NetBIOS Name Resolution Process
Types of Names
Host name:Host name:
Assigned to a computer’s IP address
Up to 255 characters long
Can contain alphabetic and numeric characters, hyphens, and periods
Together with domain name, this creates a fully qualified domain name
Assigned to a computer’s IP address
Up to 255 characters long
Can contain alphabetic and numeric characters, hyphens, and periods
Together with domain name, this creates a fully qualified domain name
NetBIOS name:NetBIOS name:
A 16-byte address
15 of the bytes may be used for the name which may include alphabetic and numeric characters, hyphens, and periods
The 16th byte is used by the services that a computer offers to the network
A 16-byte address
15 of the bytes may be used for the name which may include alphabetic and numeric characters, hyphens, and periods
The 16th byte is used by the services that a computer offers to the network
Static tablesStatic tables
Dynamic tablesDynamic tables
Mapping Names: Dynamic or Static Tables
Host name to IP NetBIOS name to IP
DNS serverDNS server WINS serverWINS server
HOSTS fileHOSTS file LMHOSTS fileLMHOSTS file
Dynamic IP Mapping
DNS Server:DNS Server:
A system for naming computers and network services
Is a naming system organized in a hierarchical fashion
Maps domain names to IP address
Stores mapping records
Is assigned to a computer’s IP address
A system for naming computers and network services
Is a naming system organized in a hierarchical fashion
Maps domain names to IP address
Stores mapping records
Is assigned to a computer’s IP address
WINS Server:WINS Server:
Provides a distributed database for registering dynamic mappings of NetBIOS names
Maps NetBIOS names to IP addresses
Provides a distributed database for registering dynamic mappings of NetBIOS names
Maps NetBIOS names to IP addresses
Static IP Mapping
DNS serverDNS server
Provides name resolution for host name to IP address
Allows multiple host names to be assigned to the same IP address
Provides name resolution for host name to IP address
Allows multiple host names to be assigned to the same IP address
WINS ServerWINS Server
Provides a distributed database for registering dynamic mappings of NetBIOS names
Maps NetBIOS names to IP addresses
Provides a distributed database for registering dynamic mappings of NetBIOS names
Maps NetBIOS names to IP addresses
HOSTS file
HOSTS file
LMHOSTS file
LMHOSTS file
Selecting a Name Resolution Method
DNS is required when:DNS is required when:
Client is a member of the Active Directory domain
Client needs to communicate over the Internet
Client is a member of the Active Directory domain
Client needs to communicate over the Internet
WINS is required when:WINS is required when:Client is a member of a Windows NT 4.0 or earlier domain
Client applications or services require NetBIOS name resolution
Client is a member of a Windows NT 4.0 or earlier domain
Client applications or services require NetBIOS name resolution
DNS ServerDNS Server
WINS ServerWINS Server
Host Name Resolution Process
WINS serverWINS server
LMHOSTS file
Broadcast
DNS serverDNS server
88
99
77
HOSTS file
55
44
DNS cacheDNS cache
Local host nameLocal host name22
1010
33
NetBIOS name cacheNetBIOS name cache
66
A
Enter commandEnter command11
WINS serverWINS server33
NetBIOS name cacheNetBIOS name cache22
88A
Enter commandEnter command11
The NetBIOS Name Resolution Process
HOSTS file66
DNS serverDNS server77
LMHOSTS fileBroadcast44
55
Lesson: Configuring a DNS and WINS Client
Specifying Host Names, Domain Names, and Connection-Specific Names
Configuring a DNS Client
Specifying Additional DNS Servers
Configuring DNS Query Settings
Configuring DHCP to Dynamically Update DNS
Troubleshooting DNS Name Resolution
Configuring a WINS Client
Configuring DHCP to Dynamically Update DNS
DNSServer
DHCP Server
Client registeredClient registered DHCP registeredDHCP registered
Computer1(Static or Dynamic)
Request for IP address
Assign IP address of 192.168.120.133
Client dynamic updateClient dynamic update33
DNS database
11
22
Computer1 192.168.120.133Computer1 192.168.120.133
DHCP dynamic updateDHCP dynamic update
33
Troubleshooting DNS Name Resolution
Use nslookup commandUse nslookup command
11
Change the host name resolution configurationChange the host name resolution configuration
22
Configuring a WINS Client
DHCP clients
DHCPserver
Manual configurationManual configuration Automatic configurationAutomatic configuration
Lab D: Configuring the DNS Client for Windows XP Professional
Exercise 1:Configuring a Computer to Use DNS
Exercise 2: Configuring an Alternate DNS Server Address
Working with FTP
Windows XP Professional provides various client FTP interfaces along with the tools for hosting FTP sites by using IIS
Windows Explorergraphical client
Windows Explorergraphical client
Command-line client
Command-line client
Working with Telnet
Issuing UNIX commandsUNIX serverTelnet server
Windows XP
Professional Telnet client
Telnet client:Telnet client:
Issuing Telnet commands Windows XP ProfessionalTelnet server
UNIX workstationTelnet client
Telnet server:Telnet server: