- transport
- tcp · udp
- in transit
- cleartext
- assignment
- official
- risk
- 7/10
- lookups
- 0
2 transports registered
payload readable on path
registered with iana
risk
rank 993 of 4,615 · top 21%
also known as hfcs, HyperFileSQL
Technical Details
what runs on :4900HFSQL Client/Server normally accepts proprietary binary database connections over TCP port 4900; the registered service also includes UDP, whose use can depend on the server version and configuration. Clients authenticate and exchange database requests and results using the HFSQL protocol rather than HTTP or a text-based SQL wire protocol. The port is configurable, so installations may listen elsewhere; encryption and other connection protections must be enabled according to the deployment rather than assumed from the default port.
Security Information
exposure of :4900risk score
7/ 10risk
treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.
databases averages 3.9 across 131 ports — this one sits 3.1 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
An internet-exposed HFSQL listener provides a direct database attack surface: attackers can probe authentication, attempt password guessing, and target vulnerabilities in the server or retrieve or alter data if they gain access. It should normally be restricted to trusted application hosts or private network segments, with strong credentials and configured transport protection; it should not be exposed broadly to the public internet.
Related Ports
the 8 most looked-up other ports in databases — 131 ports carry that label.
| port | service | risk | |||
|---|---|---|---|---|---|
| :8882 | Atlasz Secure App Server | TCP | Web Services | caution | 66.9k |
| :9001 | ETL Service Manager | TCPUDP | Databases | caution | 28.6k |
| :2484 | Oracle SSL Listener | TCPUDPtls | Security | caution | 25.0k |
| :5495 | Applix TM1 Admin | TCP | Databases | caution | 24.8k |
| :591 | FileMaker Web Sharing | TCP | Web Services | caution | 23.1k |
| :1521 | Oracle TNS Listener | TCP | Security | caution | 19.6k |
| :21001 | AMLFilter Admin | TCP | Security | caution | 19.2k |
| :18206 | Audition FAM DB | TCPUDP | Databases | caution | 19.1k |
risk mix of the 8 listed
- caution100%
1 of 8 encrypted