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Port 9000UDPCast

UDPCast is a network tool designed for efficient multicasting of disk images or large files across a LAN, leveraging UDP transport. It enables simultaneous data distribution to many clients without saturating network resources, which is especially useful for cloning systems or rapid software deployment..

inFile TransferNetwork ServicesSystem
transport
udp

single transport

in transit
cleartext

payload readable on path

assignment
unofficial

used by convention

risk
4/10

caution

lookups
14,307

rank 244 of 993 · top 24%

3 other services are registered on port 9000. compare all 4 →

Technical Details

what runs on :9000

UDPCast is an open-source utility facilitating multicast file transfers over networks using the UDP protocol. Unlike traditional unicast transmissions, multicasting with UDPCast can send data to multiple receivers simultaneously, which is highly efficient when deploying operating systems or distributing identical files to many machines at once. By utilizing UDP, it reduces transmission overhead and latency, albeit at the cost of error correction complexity.

Typically, UDPCast is employed in scenarios such as mass installation of system images in educational institutions, data centers, or network boot environments. It sends raw disk data or files from a sender machine to multiple receiving machines concurrently, often requiring boot media with UDPCast built-in. The simplicity of its design enables fast deployment with minimal setup.

Despite its efficiency, multicast transmissions via UDP are connectionless and do not guarantee delivery or order, so UDPCast often includes rudimentary error correction or resend features managed at the application layer. Proper network configuration, such as enabling IGMP and tuning switch multicast settings, is essential to optimize performance and reliability.

Security Information

exposure of :9000

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

file transfer averages 4.1 across 114 ports — this one sits 0.1 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

unofficial

used by convention, not registered — what answers here varies by deployment

reachable over

udp

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

security overview

Common Vulnerabilities:

  • Because it uses raw UDP multicast, UDPCast is susceptible to packet sniffing and data interception if the network is not properly segmented or encrypted at a lower layer.
  • Unauthorized users on the local network may capture ongoing transmissions or inject malicious data if multicast streams are not access-controlled.
  • Possible denial of service through overwhelming multicast floods or spoofed packets disrupting legitimate cloning sessions.

Common Mitigations:

  • Use isolated VLANs or dedicated deployment networks to keep multicast traffic restricted to authorized systems.
  • Enable network-level encryption such as IPsec over the LAN if feasible, as UDPCast does not provide built-in encryption.
  • Apply strict IGMP filtering and multicast access controls on switches and routers.
  • Monitor network traffic during multicast sessions to detect anomalies.
  • Authenticate clients before starting multicast transfers to prevent rogue participation.

Related Ports

all 114 in file transfer →

the 8 most looked-up other ports in file transfer — 114 ports carry that label.

portservicerisk
:9080Groove RPCcaution
:17500Dropbox LAN Synccaution
:548Apple Filing Protocolcaution
:7000Vuze HTTPS Trackercaution
:1337PowerFolder P2Pcaution
:9001SharePoint Authoringcaution
:8080FilePhile Relaycaution
:1337WASTE Encrypted Sharingcaution

risk mix of the 8 listed

  • caution100%

1 of 8 encrypted