Online NMAP Port Scanner – Free NMAP Scanning for Open Ports
Online NMAP port scanner is a free web-based tool that allows you to scan for open ports on any given IP address or domain. NMAP is a popular open-source network scanning tool used for security auditing and network exploration. With Online NMAP port scanner, you can easily perform a port scan without the need for any software installation or configuration.
How to use Online NMAP port scanner
To use the Online NMAP port scanner, simply navigate to NettoolsOnline NMAP Tool and enter the IP address or domain name that you want to scan. The tool will then perform a scan and provide you with a list of open ports on that IP or domain. You can use this information to identify any potential vulnerabilities in your network and take appropriate action to secure it.
Benefits of using Online NMAP port scanner
Online NMAP port scanner offers several benefits, including:
- Free to use: Online NMAP port scanner is completely free, and there are no hidden fees or charges.
- Easy to use: The tool has a simple and intuitive interface, making it easy to perform port scans even if you have no prior experience with NMAP or network scanning tools.
- Fast and reliable: Online NMAP port scanner uses advanced scanning techniques to quickly and accurately identify open ports, making it a fast and reliable tool for network exploration and security auditing.
What is NMAP and How It Works?
NMAP is a powerful network scanning tool used to discover hosts and services on a computer network. It can be used for network inventory, vulnerability detection, penetration testing, firewall and router auditing, service detection, and network troubleshooting.
NMAP sends packets to a target host or network and analyzes the responses using various scanning techniques, such as TCP Connect Scanning, SYN Scanning, and UDP Scanning. It operates in multiple modes, including Interactive Mode, Scripting Mode, Stealth Mode, and Timing and Performance Mode.
NMAP Common Ports
NMAP has a database of common ports that it scans by default. Some of the most commonly used ports include:
| Port | Protocol | Service |
|---|---|---|
| 21 | TCP | FTP |
| 22 | TCP | SSH |
| 23 | TCP | Telnet |
| 25 | TCP | SMTP |
| 53 | TCP/UDP | DNS |
| 80 | TCP | HTTP |
| 110 | TCP | POP3 |
| 115 | TCP | SFTP |
| 119 | TCP | NNTP |
| 123 | UDP | NTP |
| 135 | TCP | Microsoft RPC |
| 139 | TCP | NetBIOS |
| 143 | TCP | IMAP |
| 161 | UDP | SNMP |
| 194 | TCP | IRC |
| 389 | TCP | LDAP |
| 443 | TCP | HTTPS |
| 445 | TCP | SMB/CIFS |
| 465 | TCP | SMTPS |
| 587 | TCP | SMTP |
| 993 | TCP | IMAPS |
| 995 | TCP | POP3S |
| 1433 | TCP | Microsoft SQL Server |
| 3306 | TCP | MySQL |
| 3389 | TCP | RDP |
| 5900 | TCP | VNC |
| 8080 | TCP | HTTP Proxy |
NMAP Commands and Parameters
NMAP has a vast array of commands and parameters that can be used to customize and fine-tune your scans. Some of the most commonly used commands include:
- -sS: TCP SYN scan, also known as “half-open” scan.
- -sT: TCP connect scan.
- -sU: UDP scan.
- -sN: TCP null scan.
- -sF: TCP FIN scan.
- -sX: TCP Xmas scan.
- -O: OS detection.
- -A: Aggressive scan, includes OS detection, version detection, script scanning, and traceroute.
- -p: Specifies the ports to be scanned.
- -v: Verbose output.
- -oN: Output scan results to a normal file.
- -oX: Output scan results to an XML file.
- -iL: Input from list of hosts/networks.
- -T: Timing template (higher values result in faster scans but increased detection).
- –script: Runs specific Nmap scripts.
- -Pn: Treat all hosts as online, even if they do not respond to ping.
- -p-: Scans all 65,535 ports.
- -sV: Version detection, identifies versions of services running on target ports.
- -sC: Script scan using the default set of Nmap scripts.
- –traceroute: Performs a traceroute to each host before scanning.
Conclusion
In conclusion, Online NMAP is a powerful and easy-to-use online port scanner that allows you to scan your network for open ports and detect potential security risks. Whether you’re a network administrator, security professional, or just a curious user, NMAP can help you troubleshoot network issues, identify vulnerabilities, and secure your network. Try it out now and see the results for yourself!
Don’t forget to check out our other free network tools like Online Ping, Open Port Check, Traceroute Online, Reverse DNS Lookup, and DNS Lookup.
With NetToolsOnline’s Online NMAP Port Scanner, you can easily and securely scan any network for open ports and vulnerabilities. Try it out now and see how it can benefit you in identifying potential security risks and improving your network’s overall security.