Port 2745Bagle worm backdoor

TCP 2745 is associated with the Bagle/Beagle worm backdoor; the IANA assignment is Urbisnet.

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

also known as urbisnet, Beagle backdoor

Technical Details

what runs on :2745

The IANA registry lists URBISNET on both TCP and UDP 2745, but does not document a protocol or handshake. TCP 2745 is also known as a port used by Bagle/Beagle worm variants for backdoor access; this is malware behavior, not a standardized service, and its wire protocol and capabilities can vary by variant. No corresponding UDP behavior is established here.

Security Information

exposure of :2745

risk score

8/ 10risk

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

security averages 3.1 across 347 ports — this one sits 4.9 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

Treat an unexpected TCP listener on 2745 as suspicious and investigate the host for malware rather than assuming it is a legitimate Urbisnet service. A Bagle/Beagle backdoor can expose a compromised system to remote control; do not expose such a listener to the internet, and isolate and remediate an affected host.

Record

iana registry entry

port: :2745
service: Bagle worm backdoor
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 8/10risk
category: Security
usage: IANA assigns TCP and UDP 2745 to URBISNET, registered to Urbis Net Ltd. In real-world security references, TCP 2745 is also associated with backdoor functionality in Bagle/Beagle worm variants; an unexpected listener may indicate a compromised legacy host.
lookups: 0rank 993
added: 2026-09-24
updated: 2026-09-24
references: IANA service name registry — port 2745

Something wrong?

This record is maintained by the engineers who use port 2745. 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 2026-09-24.

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edit this record →back to the registry

Related Ports

all 347 in security →

the 8 most looked-up other ports in security — 347 ports carry that label.

port	service	proto	category	risk	views
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:443	HTTPS	TCPtls	Web Services	caution	65.9k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Squid Proxy HTTP	TCP	Web Services	caution	45.8k
:8080	HTTP Alternate	TCP	Web Services	caution	44.9k
:7000	Vuze HTTPS Tracker	TCPtls	Security	caution	28.9k

risk mix of the 8 listed

caution100%

2 of 8 encrypted

Port :2745Bagle worm backdoor

Technical Details

Security Information

Related Ports

Port 2745Bagle worm backdoor