![]() ![]() We recommend in general to refresh some knowledge about transport protocols, for example remembering how the establishment of a TCP connection works with the negotiation in three steps: first, SYN type call from the client to a port, RST response if the port is closed or SYN-ACK if it is open, and the ACK from the client to the server to complete the process. and incorporates various scanning techniques. The Open Source nmap tool allows us to perform network and port scans, being able to scan a single destination, a range, a list of IPs… Based on TCP, UDP, ICMP, SCTP requests, etc. To learn more about the tool, we recommend reading their manual. This post is not intended as a manual for the use of the tool but again an introduction to it to understand the identification of services as a phase of ethical hacking prior to the detection of vulnerabilities. Although it is a tool typically used in Linux (and of course included in the reference suite that I use in these posts, Kali), compilations for other operating systems can already be found.īefore going to work, we want to warn that nmap is a complex and complete tool, with a huge amount of options, parameters, etc. Basically this post is going to focus on the use of a fantastic and essential tool, nmap. In short, in this post we will try to see how it is possible to make an inventory of open ports in an IP or range of IPs, and even identify the technology under an open port, when this is possible. If you liked that “this is very safe because who is going to know that this subdomain exists” (that although you cannot believe it, it is more common than it seems), do not miss how the “who is going to know that I put this service in this port with such a strange number”… In the previous post of ethical hacking we briefly explain various options to get an enumeration of IP addresses and subdomains when performing an ethical hacking process. Searching for vulnerabilities with nmap.Identifying operating systems and services.That’s it! Now make sure to add the wireless network or make any other required changes to be able to connect without the ethernet cable again. If using a stock installation the default password will be raspberry. In the terminal window, now enter ssh to connect to the Raspberry Pi. For example if it shows 192.168.2.1 then your Raspberry Pi will have 192.168.2.2. The IP address that the Raspberry Pi will get is the the IP address shown here+1. At the bottom there should be an interface called bridge100. Now open a terminal window and type in ifconfig to show the list of all interfaces. Now check the On checkbox next to Internet Sharing to enable it. Now on your Mac, go to System Preferences > Sharing, click on Internet Sharing and choose the Wi-Fi interface to share from, and below check the box next to your wired network interface, e.g. Table of contentsĬonnect your Mac and Raspberry Pi with an ethernet cable and power up your Raspberry Pi. Below I describe how to configure a direct computer-to-computer connection using an ethernet cable. In some cases, one may want a more direct connection with the Raspberry Pi, such as when neither a wireless nor a wired network are available. ![]() ![]() Connect directly to your Raspberry Pi by network cable ![]()
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