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0.13.0 Dec 10, 2021
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#47 in Command line utilities

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ARP scanner CLI

Build Status dependency status crates.io

Find all hosts in your local network using this fast ARP scanner. The CLI is written in Rust and provides a minimal scanner that finds all hosts using the ARP protocol. Inspired by the awesome arp-scan project.

✔ Minimal Rust binary & fast ARP scans

✔ Scan customization (ARP, timings, interface, DNS, ...)

✔ MAC vendor search

✔ JSON, YAML & CSV exports

✔ Pre-defined scan profiles (default, fast, stealth & chaos)


Start by listing all network interfaces on the host.

# List all network interfaces
$ arp-scan -l

lo                   ✔ UP      00:00:00:00:00:00
enp3s0f0             ✔ UP      4f:6e:cd:78:bb:5a    
enp4s0               ✖ DOWN    d0:c5:e9:40:00:4a    
wlp1s0               ✔ UP      d2:71:d8:29:a8:72
docker0              ✔ UP      49:fd:cd:60:73:77
br-fa6dc54a91ee      ✔ UP      61:ab:c1:a7:50:79

Found 6 network interfaces, 5 seems up for ARP scan
Default network interface will be wlp1s0

Perform a default ARP scan on the local network with safe defaults.

# Perform a scan on the default network interface
$ arp-scan

Selected interface wlp1s0 with IP
Estimated scan time 2068ms (10752 bytes, 14000 bytes/s)
Sending 256 ARP requests (waiting at least 800ms, 0ms request interval)

| IPv4            | MAC               | Hostname     | Vendor       |
|     | 91:10:fb:30:06:04 | router.home  | Vendor, Inc. |
|    | 45:2e:99:bc:22:b6 | host-a.home  |              |
|    | bc:03:c2:92:47:df | host-b.home  | Vendor, Inc. |
|    | 8d:eb:56:17:b8:e1 | host-c.home  | Vendor, Inc. |
|    | 35:e0:6c:1e:e3:fe |              | Vendor, Inc. |

ARP scan finished, 5 hosts found in 1.623 seconds
7 packets received, 5 ARP packets filtered

Getting started

Download the arp-scan binary for Linux (Ubuntu, Fedora, Debian, ...). See the releases page for other binaries.

wget -O arp-scan https://github.com/Saluki/arp-scan-rs/releases/download/v0.13.1/arp-scan-v0.13.1-x86_64-unknown-linux-musl && chmod +x ./arp-scan

Optionnaly, fetch the IEEE OUI reference file (CSV format) that contains all MAC address vendors.

wget -O /usr/share/arp-scan/ieee-oui.csv http://standards-oui.ieee.org/oui/oui.csv

List all available network interfaces.

./arp-scan -l

Launch a scan on interface wlp1s0.

./arp-scan -i wlp1s0

Enhance the minimum scan timeout to 5 seconds (by default, 2 seconds).

./arp-scan -i wlp1s0 -t 5s

Perform an ARP scan on the default network interface, VLAN 45 and JSON output.

./arp-scan -Q 45 -o json


Get help -h

Display the main help message with all commands and available ARP scan options.

List interfaces -l

List all available network interfaces. Using this option will only print a list of interfaces and exit the process.

Select scan profile -p stealth

A scan profile groups together a set of ARP scan options to perform a specific scan. The scan profiles are listed below:

  • default : default option, this is enabled if the -p option is not used
  • fast : fast ARP scans, the results may be less accurate
  • stealth : slower scans that minimize the network impact
  • chaos : randomly-selected values for the ARP scan

Select interface -i eth0

Perform a scan on the network interface eth0. The first valid IPv4 network on this interface will be used as scan target. By default, the first network interface with an up status and a valid IPv4 will be selected.

Set IPv4 network range -n

By default, the scan process will select the first IPv4 network on the interface and start a scan on the whole range. With the --network option, an IPv4 network can be defined (this may be used for specific scans on a subset of network targets).

Set global scan timeout -t 15s

Enforce a timeout of at least 15 seconds. This timeout is a minimum value (scans may take a little more time). Default value is 2000ms.

Change ARP request interval -I 39ms

By default, a 10ms gap will be set between ARP requests to avoid an ARP storm on the network. This value can be changed to reduce or increase the milliseconds between each ARP request.

Enforce scan bandwidth limit -B 1000

Enforce a bandwidth limit (expressed in bits per second) on ARP scans. The --bandwidth option conflicts with --interval since these 2 arguments change the same parameter underneath.

Numeric mode --numeric

Switch to numeric mode. This will skip the local hostname resolution process and will only display IP addresses.

Host retry count -r 3

Send 3 ARP requests to the targets (retry count). By default, a single ARP request will be sent to each host.

Change source IPv4 -S

Change or force the IPv4 address sent as source in the broadcasted ARP packets. By default, a valid IPv4 address on the network interface will be used. This option may be useful for isolated hosts and security checks.

Change destination MAC -M 55:44:33:22:11:00

Change or force the MAC address sent as destination ARP request. By default, a broadcast destination (00:00:00:00:00:00) will be set.

Change source MAC -M 11:24:71:29:21:76

Change or force the MAC address sent as source in the ARP request. By default, the network interface MAC will be used.

Randomize target list -R

Randomize the IPv4 target list before sending ARP requests. By default, all ARP requests are sent in ascending order by IPv4 address.

Use custom MAC OUI file --oui-file ./my-file.csv

Use a custom OUI MAC file, the default path will be set to /usr/share/arp-scan/ieee-oui.csv".

Set VLAN ID -Q 42

Add a 802.1Q field in the Ethernet frame. This fields contains the given VLAN ID for outgoing ARP requests. By default, the Ethernet frame is sent without 802.1Q fields (no VLAN).

Customize ARP operation ID --arp-op 1

Change the ARP protocol operation field, this can cause scan failure.

Customize ARP hardware type --hw-type 1

Change the ARP hardware type field, this can cause scan failure.

Customize ARP hardware address length --hw-addr 6

Change the ARP hardware address length field, this can cause scan failure.

Customize ARP protocol type --proto-type 2048

Change the ARP protocol type field, this can cause scan failure.

Customize ARP protocol adress length --proto-addr 4

Change the ARP protocol address length field, this can cause scan failure.

Set output format -o json

Set the output format to either plain (a full-text output with tables), json, yaml or csv.

Show version --version

Display the ARP scan CLI version and exits the process.

Roadmap & features

The features below will be shipped in the next releases of the project.

  • Make ARP scans faster
    • with a per-host retry approach
    • add a back-off factor for retries
    • by closing the response thread faster - released in 0.8.0
  • Scan profiles (standard, attacker, light, ...) - released in 0.10.0
  • Complete VLAN support
  • Exports (JSON & YAML) - released in 0.7.0
  • Full ARP packet customization (Ethernet protocol, ARP operation, ...) - released in 0.10.0
  • Time estimations & bandwidth - released in 0.10.0
  • MAC vendor lookup in the results - released in 0.9.0
  • Fine-grained scan timings (interval) - released in 0.8.0
  • Wide network range support - released in 0.13.0
  • Partial results on SIGINT - released in 0.11.0
  • Read network targets from file - released in 0.12.0
  • Adding advanced packet options (padding, LLC, ...)
    • add padding bits after ARP payload
    • support RFC 1042 LLC framing with SNAP
  • Enable bandwith control (exclusive with interval) - released in 0.12.0
  • Stronger profile defaults (chaos & stealth)
  • Other platforms (Windows, ...)
  • Read targets from stdout
  • Change verbose options (for debug, network details, quiet mode, ...)
  • Avoid packet copy in userspace for faster scans (BPF filtering)

Building the project

Linux and Mac

Run the cargo build command.


See github.com/libpnet/libpnet#windows. In additional for what they described there, for linking Packet.lib you can just place it in the root of this project.


Feel free to suggest an improvement, report a bug, or ask something: https://github.com/saluki/arp-scan-rs/issues


~263K SLoC