whatportis.com
suggest an edit →

Port 475tcpnethaspsrv

tcpnethaspsrv is a network service used primarily to facilitate license management and copy protection for software utilizing the HASP (Hardware Against Software Piracy) dongle system developed by Aladdin Knowledge Systems. It allows software applications to communicate with hardware dongles over TCP/IP networks, enabling centralized licensing control and enforcement..

inSecurityNetwork Services
transport
tcp

single transport

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
4/10

caution

lookups
20,741

rank 115 of 993 · top 11%

Technical Details

what runs on :475

Port 475 is officially assigned to tcpnethaspsrv, part of the HASP licensing system from Aladdin Knowledge Systems (now SafeNet/Gemalto). This network license manager daemon enables software to authenticate licensing dongles over a TCP/IP connection, supporting centralized license administration instead of relying on direct hardware connections to each client machine.

The tcpnethaspsrv service listens on this port, handling requests from protected software clients that need to verify the presence of a valid HASP dongle before the application starts or during its operation. It transmits authentication and cryptographic challenge/response data between client software and the hardware dongle. This architecture streamlines the management of multiple licensed users while simplifying license deployment in corporate network environments.

Typically, tcpnethaspsrv runs on a dedicated license server reachable by all clients. The underlying protocol is proprietary and optimized for HASP communications over TCP. Because HASP integrates both hardware-level security and network remote validation, it remains a popular licensing solution where offline or static licensing is impractical.

Security Information

exposure of :475

risk score

4/ 10caution

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

security averages 3.8 across 216 ports — this one sits 0.2 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

every listening transport is another surface to filter at the edge

security overview

Common Vulnerabilities:

  • Unauthorized access to the license server could result in license abuse or denial of software functionality.
  • Lack of encryption means license data and communication might be susceptible to interception, manipulation, or replay attacks.
  • Exposure of tcpnethaspsrv service beyond trusted internal networks increases risk of exploitation or malicious license spoofing.
  • Old or unpatched versions of HASP license managers may contain unpatched vulnerabilities that allow remote denial of service or unauthorized access.

Common Mitigations:

  • Restrict access to port 475 using strict firewalls and network segmentation, ensuring only trusted clients and internal subnets can connect.
  • Deploy the latest updates and security patches to the HASP licensing software.
  • Where possible, use encrypted tunnels or VPNs to secure communication.
  • Implement strong access controls and monitoring around the license server.
  • Disable the license server’s exposure to untrusted or public networks.
  • Regularly audit licensing activities and logs for abnormal patterns or access attempts.

Related Ports

all 216 in security →

the 8 most looked-up other ports in security — 216 ports carry that label.

portservicerisk
:8881Atlasz Secure Servercaution
:443HTTPScaution
:8291Winbox MikroTik Admincaution
:3268Microsoft Global Catalog (GC)caution
:135Microsoft EPMAPcaution
:3128Squid Proxy HTTPcaution
:8080HTTP Alternatecaution
:7000Vuze HTTPS Trackercaution

risk mix of the 8 listed

  • caution100%

3 of 8 encrypted