Topology›Host Map

Host Map

Network map & host discovery — enter a CIDR range to begin.

WCAG AA
Target Configuration
idle
hosts [0]latency [0.00ms]topology [none]
Run map to visualize the network topology
Scan Log

No scan running

Address Range Reference
RangeDescriptionRFC
10.0.0.0/8
Private — Class ARFC 1918
172.16.0.0/12
Private — Class BRFC 1918
192.168.0.0/16
Private — Class CRFC 1918
127.0.0.0/8
LoopbackRFC 1122
169.254.0.0/16
Link-local / APIPARFC 3927
100.64.0.0/10
Shared address space (CGNAT)RFC 6598
192.0.2.0/24
Documentation (TEST-NET-1)RFC 5737
198.51.100.0/24
Documentation (TEST-NET-2)RFC 5737
203.0.113.0/24
Documentation (TEST-NET-3)RFC 5737
224.0.0.0/4
MulticastRFC 5771
240.0.0.0/4
Reserved / ExperimentalRFC 1112
255.255.255.255/32
Limited broadcastRFC 919
About Host Map
Remote mode: If accessing OSSAD-9 from the web, host map runs on simulated data for reasons concerning Vercel security and Vercel's sandboxed environment.
Local mode: When using OSSAD-9 as a local web application, please ensure that you have installed nmap and added it to your PATH. If nmap cannot be accessed in this configuration, host map reverts back to running on simulated data. Otherwise, consider installing the OSSAD-9 desktop application which comes prebundled with all prerequisite binaries and requires no further work from your end.
About: Host Map is a network diagnostics tool that enables you to visualize your LAN network topology. Host map is built on top of a binary called nmap, which is a port scanner program. However, due to legal and ethical concerns, OSSAD uses it with the -sn flag, which reduces it to a ping sweep. i.e., only check which hosts are alive in a network. Crucially, Host Map is not designed nor intended to discover network hosts outside of your local area. Examples of unauthorized scans are:
  • Scanning a neighbour's WiFi to map their connected devices without their knowledge or consent
  • Entering your ISP management's subnet CIDR to scan their internal network
  • Using a VPN to host map a remote private network without explicit written permission
  • Scanning any shared public network at a public venue such as a hotel or airport
Host map is exclusively designed to scan on a local network that you own. Examples of authorized scans include:
  • Scanning your own home LAN to identify unknown devices
  • Scanning a network that you own and operate such as your business network
  • Running authorized penetration tests as a security professional with explicit permission granted by the network owner
  • A network in which you have explicit written permission to scan such as in a security or IT contractor role
For more information regarding the ethics and legality of (port) scanning, the user is highly encouraged to give a read through the following article written by the authors of nmap itself.