Network Security Scan Analysis
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SECTION A: Question 1 is compulsory and must be attempted. You are interested in knowing the protocols running on a network server and decide to do a tcp scan. Consider the exhibit of network scan below and answer the questions that follow. Figure 1. Results of a network security scan. (a) State which protocol is used for unsecured and secured remote access services. [4 Marks] (b) State which protocol is used for unsecured and secured website services. [4 Marks] (c) State which protocol you can used in place of ftp to provide secure file transfer. [4 Marks] (d) Explain the term tcp appearing after each port number. [4 Marks] (e) Differentiate in tabular form the TCP 3-way handshake from the WiFi 4-way handshake. [4 Marks]
This question includes visual content: A screenshot of an Nmap command-line output showing a port scan. The output lists various open ports including 21/tcp (ftp), 22/tcp (ssh), 23/tcp (telnet), 80/tcp (http), 135/tcp (msrpc), 139/tcp (netbios-ssn), 443/tcp (https), 445/tcp (microsoft-ds), 512/tcp (exec), 514/tcp (shell), 992/tcp (telnets), 3306/tcp (mysql), and 5357/tcp (wsdapi). The header includes information about host status and latency.
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Hi baxter, let's solve this network security question together. We will analyze the results of the network scan and address each sub-question step-by-step.
Network Security Scan Analysis
Let's first take a look at the provided scan results. This is an nmap scan showing several open ports, such as port twenty-one for ftp, twenty-two for ssh, twenty-three for telnet, eighty for http, and four hundred and forty-three for https.
| Port | Service | Protocol Description |
|---|---|---|
| 21/tcp | ftp | File Transfer Protocol |
| 22/tcp | ssh | Secure Shell (Secure Remote Access) |
| 23/tcp | telnet | Telnet (Unsecure Remote Access) |
| 80/tcp | http | Hypertext Transfer Protocol (Unsecure Web) |
| 443/tcp | https | Hypertext Transfer Protocol Secure (Secure Web) |
For part a, we need to state which protocol is used for unsecured and secured remote access services from the scan.
(a) Remote Access Protocols
The unsecured remote access service is Telnet, which runs on port twenty-three. The secured remote access service is SSH, running on port twenty-two.
Next, part b asks for the protocols used for unsecured and secured website services.
(b) Website Services
The unsecured website service is HTTP, running on port eighty, while the secured website service is HTTPS, running on port four hundred and forty-three.
Let's clear the board to answer the remaining parts of the question.
Network Security Scan Analysis (Continued)
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