1- Every computer has a name- Yours is called (run the command -ipconf.pdf
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1. Every computer has a name. Yours is called (run the command "ipconfig /all" or look in system info > summary) 2. My computer communicates on a LAN and to the internet often via an Ethernet network interface card (NIC). How many network cards does my computer have? (ipconfig /all) 3. My network card(s) has(ve) a unique address encoded in them. This physical entity is called the MAC address. It is an abbreviation for media access control (something to do with how one computer gets the attention of another computer standing in a crowd). Using two different methods determine what is(are) the MAC address(es), also known as physical address(es), of your computer? What are the two methods used? (ipconfig /all, sys info > components > network > adapter) 4. Note the MAC address uses a hex code (4 binary bits combined). This means digits are encoded in both alpha and numerical. How many hex characters are used in the MAC address discovered for your computer?.
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1)Please explain the commands ifconfig, ping, traceroute, netstat, d.pdf
1)Please explain the commands ifconfig, ping, traceroute, netstat, dig, nslookup, route, host,
hostname.
2). Explain briefly about TCP/IP and its Protocol Architecture.
3) Explain the difference between TCP/IP Protocol stack and OSI model.
Solution
Answer:
1) Ipconfig
Ipconfig is an MS-DOS utility that can be used from MS-DOS and an MS-DOS shell to display
the network settings currently assigned and given by a network. This command can be utilized to
verify a network connection as well as to verify your network settings.
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host
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1)Please explain the commands ifconfig, ping, traceroute, netstat, d.pdf
1)Please explain the commands ifconfig, ping, traceroute, netstat, dig, nslookup, route, host,
hostname.
2). Explain briefly about TCP/IP and its Protocol Architecture.
3) Explain the difference between TCP/IP Protocol stack and OSI model.
Solution
Answer:
1) Ipconfig
Ipconfig is an MS-DOS utility that can be used from MS-DOS and an MS-DOS shell to display
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verify a network connection as well as to verify your network settings.
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Ping is one of the most commonly used network commands that allows you to ping another
network IP address. Pinging another address helps determine if the network card can
communicate within the local network or outside network.
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The nslookup MS-DOS utility that enables a user to do a reverse lookup on an IP address of a
domain or host on a network.
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The tracert command in MS-DOS and Windows (known as traceroute in Unix-like operating
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information you can determine the computer, router, switch or other network device possibly
causing your network issues.
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solves a host name into an Internet Protocol (IP) address or an IP address into a host name.
the hostname command is used to show or set a computer\'s host name and domain name. It is
one of the most basic of the network administrative utilities.
A host name is a name that is assigned to a host (i.e., a computer connected to the network) that
uniquely identifies it on a network and thus allows it to be addressed without using its full IP
address. Domain names are user-friendly substitutes for numeric IP addresses.
The basic syntax for the hostname command is
hostname [options] [new_host_name]
2)TCP/IP protocols map to a four-layer conceptual model known as the DARPA model , named
after the U.S. government agency that initially developed TCP/IP. The four layers of the DARPA
model are: Application, Transport, Internet, and Network Interface. Each layer in the DARPA
model corresponds to one or more layers of the seven-layer Open Systems Interconnection (OSI)
model.
Network Interface Layer
The Network Interface layer (also called the Network Access layer) is responsible for placing
TCP/IP packets on the network medium and receiving TCP/IP packets off the network medium.
TCP/IP was designed to be independent of the network access method, frame format, and
medium. In this way, TCP/IP can be used to connect differing network types. These include
LAN technologies such as Ethernet and Token Ring and WAN technologies such as X.25 and
Frame Relay. Independence from any specific ne.
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This document discusses computer hardware and networking topics. It covers hardware components of PCs like the front panel, rear panel, and internal components. It also discusses memory, hard disks, input/output devices, and networking concepts like devices, protocols, topologies, and tools like ping and MAC addresses. Network topologies covered include bus, ring, star, hybrid and mesh with their advantages and disadvantages.
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1(A) Description:
Computer security protects computer systems, networks, and information from harm, theft, and
unauthorized use. Computer hardware is protected by the same means used to protect other
valuable or sensitive equipment, namely, serial numbers, doors and locks, and alarms. You will
complete the following for extra credit:
Identify your network information:
From your pc and mobile phone look up and identify the following information and answer the
following questions.
Identify your network IPv4 Address
Identify your MAC address
Identify your current Default Gateway
Is your DHCP server the same as your Default Gateway? Yes or No
Do you have an IPv6 address? Yes or No
(B) Investigating Network Connection Settings Est. Time: 15 minutes Core 1 Objective: 2.5 Using
a computer connected to a network, answer these questions: 1. What is the hardware device used
to make this connection (network card, onboard port, wireless)? List the devices name as
Windows sees it in the Device Manager window. 2. What is the MAC address of the wired or
wireless network adapter? What command or window did you use to get your answer? 3. For a
wireless connection, is the network secured? How do you know? 4. What is the IPv4 address of
the network connection? 5. Are your TCP/IP version 4 settings using static or dynamic IP
addressing? 6. What is the IPv6 address of your network connection? 7. Disable and enable your
network connection. Now what is your IPv4 address?.
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The document describes the design and implementation of a network firewall to prevent operating system fingerprinting. Key aspects include:
- The firewall uses iptables rules to drop packets attempting TCP or ICMP response analysis that could reveal the operating system.
- It also implements MAC address filtering to block specific external computers deemed malicious.
- Testing showed the firewall successfully prevented operating system fingerprinting via Nmap and restricted access based on MAC addresses as designed.
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