![]() To specify a port, to search, you will have to use the -p flag: nmap -p port_no Target So in that case you can use the sV flag: nmap -sV Target 5. Once you know about services after scanning ports, you may want to know more about those services. ![]() Get information about the services of hosts You can use the nmap command to send ACK packets and it will check whether the target system has a firewall enabled if yes, it will list unfiltered ports.įor this purpose, you will have to use the -sA flag with superuser privileges: sudo nmap -sA Target 5. ![]() Perform a scan to detect filtering on the Firewall When you scan multiple hosts, it is not necessary you'd always want to scan each one from the given range.Īnd in that case, you use the -exclude flag and append the host which needs to be ignored while performing the scan.įor example, here, I want to ignore 192.168.1.6 while scanning the subnet so I will be using the following: nmap 192.168.1.* -exclude 192.168.1.6 4. You can scan multiple hosts by appending the last part of your IP address.įor example, here, I have searched for: 192.168.1.8, 192.168.1.9, and 192.168.1.10 by appending the last octet: nmap 192.168.1.8,9,10 3. Now, typing each one manually is not the way I and most of you would prefer.Īnd in that case, you can specify the range of IP addresses.įor example, here, I scanned for IP addresses from 192.168.1.8 to 192.168.1.10: nmap 192.168.1.8-10 Scan multiple hosts by appending the ending octet So let's say I want to scan 3 IP addresses. )with the * symbol: nmap 192.168.1.* Scan multiple hosts by specifying the IP range To use the * wildcard, type the IP address, and replace your last octet (the last part of your IP after the. If you have to scan multiple hosts and the list is long enough to make you tired while typing, you can use the wildcard. So basically, if you have to scan 2-3 hosts, this is the easiest method in my opinion where you simply append the IP/domain one by one.įor example, here, I have scanned 3 IP addresses at once: nmap 192.168.1.9 192.168.1.8 192.168.1.10 Use a wildcard to scan the entire subnet Scan multiple hosts by appending domains or IP addresses So let's start with appending the multiple domains/IP addresses. You can also append the different endings of IP addresses rather than typing the entire IP.Using wildcards to search the entire subnet at once. ![]() Appending multiple domains or IP addresses to the nmap command. ![]() So there are several ways to scan multiple hosts: You may have to scan multiple hosts and nmap offers various ways to scan multiple hosts at the same time for an extensive search. To search for open ports, all you have to do is append the domain name or the IP address to the nmap command: nmap Targetīut if you are in hurry and want to finish the scan as soon as possible, you can use the -F flag: nmap -F target 2. To install nmap on Ubuntu/Debian base: sudo apt install nmapįor RHEL/Fedora base: sudo dnf install nmapįor Arch-based distros: sudo pacman -S nmap To know whether you have it installed or not, verify the installed version: nmap -vĪnd if it shows an error, you can refer to the given command. While you would find the nmap package pre-installed on most of the Linux distros, you might not have it pre-installed. I will be using as a target provided by nmap itself for most of the examples. ![]()
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