Port 1055ANSYS License Manager

Port 1055 is used by the ANSYS License Manager for FlexNet license checkout and administration.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 5/10
lookups: 0

also known as ansyslmd, ANSYS licensing daemon, FlexNet ANSYS license server

Technical Details

what runs on :1055

ANSYS licensing uses the FlexNet Publisher protocol, with clients exchanging license requests and responses with the license manager over TCP; the IANA assignment also lists UDP. The protocol is proprietary at the application level and is not generally treated as an encrypted transport. A typical deployment uses port 1055 for the license-manager service and a separate configured port, commonly associated with the ansyslmd vendor daemon, for vendor-specific license operations.

Security Information

exposure of :1055

risk score

5/ 10caution

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

system averages 3.8 across 362 ports — this one sits 1.2 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

This service should normally be restricted to trusted engineering networks and authorized client hosts rather than exposed to the public internet. Unencrypted license traffic may disclose host, product, and licensing information, while an exposed or vulnerable license service can be abused for reconnaissance, denial of service, or unauthorized license operations; protect it with network ACLs or a secured tunnel and keep the ANSYS licensing software updated.

Record

iana registry entry

port: :1055
service: ANSYS License Manager
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 5/10caution
category: System
usage: ANSYS installations use this port for clients and engineering applications to contact the ANSYS License Manager and obtain floating software licenses. It is commonly deployed on an internal license server, often alongside the ANSYS vendor daemon on another configured port.
lookups: 0rank 994
added: 2026-08-21
updated: 2026-08-21
references: IANA service name registry — port 1055

Something wrong?

This record is maintained by the engineers who use port 1055. 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 2026-08-21.

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

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all 362 in system →

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :1055ANSYS License Manager

Technical Details

Security Information

Related Ports

Port 1055ANSYS License Manager