Port 4341LISP Data

UDP 4341 carries encapsulated Locator/ID Separation Protocol data packets between LISP tunnel routers.

transport: udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as Locator/ID Separation Protocol

Technical Details

what runs on :4341

LISP data packets use UDP port 4341 to encapsulate an inner IP packet, with the outer IP addresses identifying routing locators (RLOCs) and the inner packet carrying endpoint identifiers (EIDs). Data forwarding is generally connectionless and has no application-layer handshake; LISP routers send packets after resolving mappings through the LISP control plane, commonly using UDP 4342. The LISP header and encapsulated packet follow the outer IP and UDP headers.

Security Information

exposure of :4341

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 3.0 across 974 ports — this one sits 1.0 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

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

LISP data is not encrypted by default, so packet contents may be visible to an observer unless additional protection such as IPsec is used. LISP tunnel endpoints should restrict UDP 4341 to known peers and validate encapsulated traffic; exposing it broadly can permit spoofed or unwanted tunnel traffic and consume forwarding resources.

Record

iana registry entry

port: :4341
service: LISP Data
transport: UDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services System
usage: LISP tunnel routers, typically ingress and egress tunnel routers, use UDP 4341 to carry encapsulated IP packets between routing locators. Engineers usually encounter it on network-infrastructure devices implementing LISP overlays rather than on ordinary application hosts.
lookups: 0rank 994
added: 2026-09-06
updated: 2026-09-06
references: IANA service name registry — port 4341
RFC 9300

Something wrong?

This record is maintained by the engineers who use port 4341. 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 2026-09-06.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 974 in network services →

the 8 most looked-up other ports in network services — 974 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:6543	Jetnet	UDP	Network Services	caution	65.3k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :4341LISP Data

Technical Details

Security Information

Related Ports

Port 4341LISP Data