The Working with TCP/IP Command Line Tools module provides you with the instruction and server hardware to develop your hands on skills in the defined topics. This module includes the following exercises:
- Using Ipconfig
- Using Tracert
- Using Netstat
- Using Nslookup
- Using Pathping
- Using Nbtstat
- Using Arp
- Using Ping
Exercise 1 - Using Ipconfig
Ipconfig or Internet protocol configuration is a tool used to display all TCP/IP network configuration values. Some of the useful IP configuration that ipconfig display are IP address, subnet mask, default gateway and preferred Domain Name System Server (DNS).
Ipconfig supports the use of switches like /all that will give detailed IP setting of the device. The parameter /release releases the IP address for the specified adapter from DHCP server. The parameter /renew renews the IP address for the specified adapter from DHCP server.
Exercise 2 - Using Tracert
Tracert or the trace route command is a TCP/IP tool for displaying the path that an Internet Protocol (IP) packet takes to reach the destination network.
This tool can be used locally to find out the path from your local host to another device in your corporate network or to the Internet. In addition, there are web-based third party tools that can show the network route from a local device to a distant server that runs a service like World Wide Web service.
Exercise 3 - Using Netstat
Network statistics or netstat is a command-line tool used for viewing network connections, network protocol statistics, routing tables and network interface such as network interface controller or software-defined network interface. It helps in measuring performance by finding network errors and determining the network traffic.
Exercise 4 - Using Nslookup
Name server lookup or NSLOOKUP is a built-in tool in Windows used for querying Domain Name System (DNS) server and view the resource records like hostnames and IP addresses of devices registered in a domain.
NSLOOKUP can be used in interactive mode, where you will enter the nslookup context by simply typing nslookup and start entering commands supported by this DNS diagnostic tool.
NSLOOKUP can be used in non-interactive mode, by simply typing nslookup in the command line and use the appropriate parameters to query DNS server for the required resource records.
There are web-based NSLOOKUP tools available on the Internet. These tools however provide minimal details of the remote target domain that you are trying to lookup for security reasons.
Exercise 5 - Using Pathping
Pathping is a Windows-based TCP/IP diagnostic tool that provides information about the network path, network delays and dropped packets from the source to the destination network. This tool combines the functionality of tracert and ping commands to verify connectivity between devices.
Exercise 6 - Using Arp
Address resolution protocol (ARP) is a TCP/IP protocol that maps a computer’s IP address to its Ethernet or Physical/Media access control (MAC) address.
When Host A needs to send information to Host B, Host A will use Domain Name System (DNS) to find Host B. Host A will look up its ARP cache and find out the hardware address of Host B to allow it to send data directly to the host.
Exercise 7 - Using Ping
Packet Internet Groper (ping) is a TCP/IP utility used for verifying the reachability of a host or network by sending packets that measure that round-trip time from the source to the destination and back.
Ping sends out Internet Control Message Protocol (ICMP) to the target system like an echo request and waits for an echo reply from the remote host.
Exercise 8 - Using Nbtstat
NetBIOS over TCP/IP (NBTSTAT) is a Windows TCP/IP utility for resolving NetBIOS name resolution issues. On a typical Windows network, NetBIOS over TCP/IP resolves NetBIOS names using a local cache, WINS, broadcast, HOSTS file and DNS server query.
On this exercise, you will use NBTSTAT to resolve some common problems on NetBIOS name resolution.
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