Zenmap

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You might also see: Nmap, command line interface

Description

Zenmap is the GUI frontend of Nmap. It enables to use Nmap without fully knowing the syntax (sometimes complex).

Installation

Please refer to Nmap installation howto

Interface

Start the interface

To start Zenmap, simply enter:

$ sudo zenmap

GUI and language

To change the language of the GUI, use the LANG environment variable:

$ export LANG="en_US.UTF-8"

Zenmap-main.png

Menu

  • Scan
    • New Window: Open a new instance of Zenmap
    • Open Scan: Open a previously saved scan in a new instance of Zenmap if there is already a scan in current instance, otherwise in current instance.
    • Open Scan in This Window: Open a previously saved scan in current instance of Zenmap
    • Save Scan: Save current scan parameters and results in a file
    • Save All Scans to Directory: Save all scans parameters and results from opened instances in a directory
    • Print: Send scan content to printer
    • Close Window: Close current instance of Zenmap
    • Quit: Close all instances of Zenmap
  • Tools
    • Compare Results: Open scan comparer
    • Search Scan Results: Enable to search for scans by filtering on Date, Host in route, Include directory, Keyword, Operating System, Options, Port, Profile Name, Service, Target.
    • Filter Hosts: Enable to filter host with a mask
  • Profile
    • New Profile or Command: Create a new scan profile
    • Edit Selected Profile: Edit selected scan profile
  • Help
    • Help: Show help
    • Report a Bug: Show procedure to report a bug
    • About: Show splash screen with version

Scan Specification

This panel enables to specify the target, the scan parameters and to launch the scan.

Zenmap-scan-specification.png

Target

Target specification can be a hostname, an IP address, a netbock with cidr notation

Profile

Zenmap is packaged with default profiles:

Intense scan
command = nmap -T4 -A -v
An intense, comprehensive scan. The -A option enables OS detection (-O), version detection (-sV), script scanning (-sC), and traceroute (--traceroute). Without root privileges only version detection and script scanning are run. This is considered an intrusive scan.
Intense scan plus UDP
command = nmap -sS -sU -T4 -A -v
Does OS detection (-O), version detection (-sV), script scanning (-sC), and traceroute (--traceroute) in addition to scanning TCP and UDP ports.
Intense scan, all TCP ports
command = nmap -p 1-65535 -T4 -A -v
Scans all TCP ports, then does OS detection (-O), version detection (-sV), script scanning (-sC), and traceroute (--traceroute).
Intense scan, no ping
command = nmap -T4 -A -v -Pn
Does an intense scan without checking to see if targets are up first. This can be useful when a target seems to ignore the usual host discovery probes.
Ping scan
command = nmap -sn
This scan only finds which targets are up and does not port scan them.
Quick scan
command = nmap -T4 -F
This scan is faster than a normal scan because it uses the aggressive timing template and scans fewer ports.
Quick scan plus
command = nmap -sV -T4 -O -F --version-light
A quick scan plus OS and version detection.
Quick traceroute
command = nmap -sn --traceroute
Traces the paths to targets without doing a full port scan on them.
Regular scan
command = nmap
A basic port scan with no extra options.
Slow comprehensive scan
command = nmap -sS -sU -T4 -A -v -PE -PS80,443 -PA3389 -PP -PU40125 -PY --source-port 53 --script all
This is a comprehensive, slow scan. Every TCP and UDP port is scanned. OS detection (-O), version detection (-sV), script scanning (-sC), and traceroute (--traceroute) are all enabled. Many probes are sent for host discovery. This is a highly intrusive scan.

Scan results

Hosts/Services Switcher

Hosts/Services Switcher

These 2 buttons enable to switch between 2 views:

  • Hosts: Show list of scanned hosts in the panel. By clicking on a host, the tabs are loaded for this host.
  • Services: Show list of open ports discovered on all scanned hosts. By clicking on a port, the tabs are loaded for this port, for all hosts.

Tabs

Nmap output

Output

This tab shows the list of scanned hosts, and for each, the list of open ports, and eventually associated services, versions and OS information.

Ports / Hosts

Ports/Hosts

Shows the list of open ports for selected host (for host view):

  • port
  • protocol
  • state
  • service
  • version

or shows the list of hosts that have selected port opened (for port view)

  • host
  • port
  • protocol
  • state
  • service
  • version

Topology

Topology

This view shows a graphical map of scanned hosts, based on traceroute information. It places hosts on circles (layers) depending on the number of hops.

Host Details

Host Details

Show some details about the scan.

Scans

Scans

Show historical list of scans.

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