Port 5722Microsoft DFS Replication Service

Windows DFS Replication traffic between servers, commonly using RPC over TCP port 5722.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 6/10
lookups: 0

also known as msdfsr

Technical Details

what runs on :5722

DFSR uses Microsoft RPC for authenticated communication and replication, with TCP 5722 serving as the traditional fixed service port; the IANA assignment also lists UDP. The RPC endpoint mapper on TCP 135 and, depending on Windows Server version and configuration, dynamic RPC ports may also be required. Windows Server 2003 R2 commonly used TCP 5722 by default, while later releases generally use dynamic RPC ports unless a static port is configured. Replicated content is transferred using DFSR's replication protocol and Remote Differential Compression.

Security Information

exposure of :5722

risk score

6/ 10risk

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

network services averages 2.8 across 1,162 ports — this one sits 3.2 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 · udp

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

security overview

DFSR should be restricted to trusted replication partners and should not be exposed directly to the Internet. An exposed listener reveals a Windows RPC service and may permit authentication attacks, denial of service, or exploitation of vulnerabilities in the host or RPC stack; compromise of a replication partner can also spread unauthorized changes through replicated data. DFSR traffic should not be assumed to provide application-level confidentiality without additional controls such as IPsec or a VPN.

Record

iana registry entry

port: :5722
service: Microsoft DFS Replication Service
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 6/10risk
category: Network Services System
usage: This port carries Microsoft Distributed File System Replication (DFSR) traffic between Windows servers in a replication group. It is normally encountered only between domain-joined replication partners on internal networks; newer Windows Server versions commonly use dynamic RPC ports instead.
lookups: 0rank 994
added: 2026-09-14
updated: 2026-09-14
references: IANA service name registry — port 5722

Something wrong?

This record is maintained by the engineers who use port 5722. 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 2026-09-14.

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edit this record →back to the registry

Related Ports

all 1,162 in network services →

the 8 most looked-up other ports in network services — 1,162 ports carry that label.

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:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
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:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :5722Microsoft DFS Replication Service

Technical Details

Security Information

Related Ports

Port 5722Microsoft DFS Replication Service