Port 8211Aruba PAPI

Aruba PAPI carries control and management traffic between Aruba access points and their controllers over UDP.

transport: udp
in transit: encrypted
assignment: official
risk: 9/10
lookups: 0

also known as UDP 8211

Technical Details

what runs on :8211

PAPI is Aruba's proprietary AP-to-controller control protocol, carried over UDP port 8211. It supports management and control exchanges between an AP and its controller; it is not a browser-facing or interactive login service. Aruba deployments may also use GRE (IP protocol 47) or IPsec for tunneled traffic, depending on configuration.

Security Information

exposure of :8211

risk score

9/ 10critical

assume it is being scanned right now. do not expose this port to untrusted networks; put a vpn or bastion in front of it.

network services averages 2.6 across 1,813 ports — this one sits 6.4 above.

in transit

encrypted

payloads are protected on the wire

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Keep UDP 8211 limited to trusted APs and controllers; it should not be exposed to the public internet. ArubaOS PAPI has had serious vulnerabilities, including unauthenticated command-injection issues in affected versions, so patch controllers and restrict access with network ACLs.

Record

iana registry entry

port: :8211
service: Aruba PAPI
transport: UDP
encryption: tls / encrypted
assignment: iana registered
risk: 9/10critical
category: Network Services
usage: Aruba access points use PAPI to exchange control and management messages with an Aruba controller. Engineers typically encounter UDP 8211 on networks linking Aruba APs to Mobility Controllers, not as a general-purpose public service.
lookups: 0rank 993
added: 2026-10-14
updated: 2026-10-14
references: IANA service name registry — port 8211

Something wrong?

This record is maintained by the engineers who use port 8211. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-14.

01edit any field on a page of its own
02a model checks it for accuracy and spam
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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :8211Aruba PAPI

Technical Details

Security Information

Related Ports

Port 8211Aruba PAPI