Port 6600Microsoft Hyper-V Live Migration

TCP 6600 carries live migration traffic between Microsoft Hyper-V hosts.

transport: tcp
in transit: cleartext
assignment: official
risk: 8/10
lookups: 0

also known as mshvlm, Hyper-V Live Migration, Hyper-V migration

1 other service is registered on port 6600. compare all 2 →

Technical Details

what runs on :6600

Hyper-V Live Migration normally uses TCP port 6600 to establish a session between the source and destination hosts. The session transfers VM memory and execution state iteratively, followed by a brief switchover for the remaining state; authentication and authorization are provided through Windows security mechanisms such as Kerberos or CredSSP, depending on the deployment. Hyper-V management and clustered operation may also involve RPC, SMB (TCP 445), and other cluster-related traffic; TCP 6600 is the migration data endpoint, not a general Hyper-V management port.

Security Information

exposure of :6600

risk score

8/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

system averages 2.7 across 747 ports — this one sits 5.3 above.

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

tcp

every listening transport is another surface to filter at the edge

security overview

This port should be restricted to trusted Hyper-V hosts and cluster networks and should not be exposed to the public Internet. Migration traffic can contain guest memory and sensitive workload state, while unauthorized access or disruption could interrupt running virtual machines; authentication and network isolation are essential, and encryption should be explicitly configured rather than assumed.

Record

iana registry entry

port: :6600
service: Microsoft Hyper-V Live Migration
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 8/10risk
category: System Virtualization
usage: Hyper-V hosts use this port to move a running virtual machine's memory and state between hosts during live migration. Engineers typically encounter it between nodes in a Windows failover cluster or other controlled Hyper-V host pair, not on an Internet-facing interface.
lookups: 0rank 994
added: 2026-09-10
updated: 2026-09-10
references: IANA service name registry — port 6600

Something wrong?

This record is maintained by the engineers who use port 6600. 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 2026-09-10.

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 747 in system →

the 8 most looked-up other ports in system — 747 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:4664	Google Desktop Search	TCP	System	caution	67.2k
:8008	IBM HTTP Server Admin	TCP	Web Services	caution	58.3k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:9080	WebSphere HTTP Transport (default)	TCP	Web Services	caution	51.6k
:23	Telnet	TCP	Remote Access	caution	34.8k
:12489	NSClient Monitoring Agent	TCP	Network Services	caution	30.0k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :6600Microsoft Hyper-V Live Migration

Technical Details

Security Information

Related Ports

Port 6600Microsoft Hyper-V Live Migration