Zenmap vs nmap11/26/2022 ![]() This scan has a whole bunch of options in it and it may seem daunting to understand at first. Slow comprehensive scanĬommand: nmap -sS -sU -T4 -A -v -PE -PP -PS80,443 -PA3389 -PU40125 -PY -g 53 –script “default or (discovery and safe)” This means it will issue a TCP SYN scan for the most common 1000 TCP ports, using ICMP Echo request (ping) for host detection. It will traceroute and ping all hosts defined in the target. Use this option when you need to determine hosts and routers in a network scan. Quick scan plusĬommand: nmap -sV -T4 -O -F –version-lightĪdd a little bit of version and OS detection and you got the Quick scan plus. Scan faster than the intense scan by limiting the number of TCP ports scanned to only the top 100 most common TCP ports. Ping scanĭo only a ping only on the target, no port scan. Usefull if the target is blocking ping request and you already know the target is up. ![]() Just like the other intense scans, however this will assume the host is up. The 1000 most common protocols listing can be found in the file called nmap-services. Normally Nmap scans a list of 1000 most common protocols, but instead we will in this example scan everything from port 1 to 65535 (max). Because this scan includes UDP ports this explicit definition of -sS is necessary. The -sS option is telling Nmap that it should also scan TCP ports using SYN packets. Same as the regular Intense scan, just that we will also scan UDP ports (-sU). This comes from having a pretty fast timing template (-T4) and for using the -A option which will try determine services, versions and OS. With the verbose output (-v) it will also give us a lot of feedback as Nmap makes progress in the scan. It will make an effort in determining the OS type and what services and their versions are running. Should be reasonable quick, scan the most common TCP ports. The presetsīefore we go into the different options in use I will make a brief explanation of each of the presets that come with Zenmap. Big thanks to Fyodor for creating and maintaining such awesome software. Nmap was created by Fyodor (Gordon Lyon, twitter, about) and has been actively developed since 1997. Some of the scan types are kind of obvious, however they may not be to everyone. It comes pre loaded with 10 different scan types which we will take closer look at them in this article. Zenmap is the GUI for the very popular free port scanner Nmap. I find it extremely motivating and fun to teach others the art of security and hacking, and I often find that my passion and enthusiasm rubs off on my students. This course prepares you for the GIAC Certification in Incident Handling (GCIH). My primary class I am teaching is Hacking Techniques, Exploits & Incident Handling. I consider myself a pragmatic person, with the ability to think outside the box, keeping the business in focus. I am passionate about security, both IT and physical security, which is one of the reasons I do a lot of public speaking at different events such as classes, conferences and workshops.ĭriven by mottos such as "Magic is just science we don't understand yet" and "Think bad, do good", I attack today's security challenges with eagerness and enthusiasm. ![]() I am usually enthusiastic and motivating when I work, and usually positive and optimistic about the general problems I encounter. I am an open, sharing and engaging person to be around, some even think I'm funny. Having a vast and broad experience in IT certainly help a great deal when working penetration tests and incidents. Along with my security expertise, I have a background from system development and application management. I mentioned earlier the scan comparison feature, this is a good way to find differences or ensure similarities across like systems.I'm Chris Dale from Norway, founder and principal consultant at River Security (). Additional features of Zenmap allow you to enter profiles for repetitive scans. Of course if you have experience using Nmap, you can enter the command parameters directly for a scan. This includes the intense scan (shown), quick scan options, and others. There are a number of options for performing scans. Figure A shows the Zenmap main screen running an intense scan: The Zenmap interface is straight forward to use after a free download from the Nmap Web site. When it comes to using Zenmap, it is the same process as using Nmap from the command line except you can construct your scan easily with the interface. This is primarily due to the ability to save scans, quickly create specific scan criteria, and compare scans across different scan iterations. ![]() I find myself now using the Zenmap interface for most of my scans. Nmap has been ported to most operating systems, and is rather simple to use. Even if you are not a Linux user, Nmap is one of the best tools to check a host’s port status remotely. ![]()
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