Port 1120Battle.net File Transfer Protocol

Port 1120 is assigned to the Battle.net File Transfer Protocol over TCP and UDP.

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

also known as bnetfile

Technical Details

what runs on :1120

Battle.net file transfer is a proprietary protocol rather than standard FTP. The assignment covers both TCP and UDP, but deployments generally use client-initiated Battle.net protocol exchanges to request and receive files; it does not provide an ordinary FTP login, directory, or FTP-over-TCP interface. Older Battle.net deployments commonly used related Blizzard service ports such as 6112 for general Battle.net traffic, so seeing 1120 alone does not identify a current Blizzard installation.

Security Information

exposure of :1120

risk score

2/ 10safe

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

file transfer averages 3.3 across 197 ports — this one sits 1.3 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

tcp · udp

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

security overview

This is an obsolete and rarely observed service, so it should not normally be exposed on the public Internet. If present, restrict access to known Battle.net clients or legacy game infrastructure; unauthenticated file-serving behavior could permit unwanted downloads or denial-of-service traffic, although no specific widely exploited vulnerability is implied by the assignment.

Record

iana registry entry

port: :1120
service: Battle.net File Transfer Protocol
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: File Transfer Gaming
usage: This port is associated with the legacy Battle.net file-transfer service, also known as BNFTP. Engineers may encounter it on older Blizzard game or Battle.net infrastructure handling client downloads, patches, or game-related files.
lookups: 0rank 993
added: 2026-08-31
updated: 2026-09-22
references: IANA service name registry — port 1120

Something wrong?

This record is maintained by the engineers who use port 1120. 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 2026-09-22.

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 197 in file transfer →

the 8 most looked-up other ports in file transfer — 197 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:17500	Dropbox LAN Sync	TCPUDP	File Transfer	caution	43.7k
:548	Apple Filing Protocol	TCP	File Transfer	caution	36.8k
:7000	Vuze HTTPS Tracker	TCPtls	Security	caution	28.9k
:1337	PowerFolder P2P	TCP	Security	caution	27.1k
:9001	SharePoint Authoring		Web Services	caution	26.3k
:8080	FilePhile Relay	UDP	File Transfer	caution	25.6k
:1337	WASTE Encrypted Sharing	TCP	Security	caution	22.9k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :1120Battle.net File Transfer Protocol

Technical Details

Security Information

Related Ports

Port 1120Battle.net File Transfer Protocol