Port 4747Apprentice
Port 4747 is used primarily by the VNC-based remote desktop tool TightVNC’s 'Apprentice' component to facilitate remote access and control of computer systems. It enables remote management, troubleshooting, and screen sharing, making it effective for system administration and remote support. Although not widely standardized, it is popular in certain remote support and monitoring solutions..
- transport
- tcp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 11,593
single transport
payload readable on path
used by convention
caution
rank 350 of 993 · top 35%
Technical Details
what runs on :4747Port 4747, commonly associated with TightVNC or applications labeled as 'Apprentice', facilitates remote control sessions over TCP. It supports graphical screen updates, input event relays, and clipboard synchronization. Communication over this port allows a remote client full access to the graphical interface of a remote system.
Typically, it is leveraged in environments where IT professionals require remote support capabilities. Sessions initiated on this port transmit display data and commands, ensuring responsive remote desktop control. The TightVNC protocol, based on RFB (Remote Framebuffer Protocol), is lightweight but extends capabilities with features like file transfer and multi-platform compatibility.
Because TightVNC and derivatives may customize default ports, 4747 is an unofficial assignment sometimes used by administrators or software configurations. This enables more flexibility in deployment but may increase complexity when managing remote access policies or firewall rules.
Security Information
exposure of :4747risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
remote access averages 4.0 across 110 ports — this one sits level with it.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
unofficial
used by convention, not registered — what answers here varies by deployment
reachable over
tcp
every listening transport is another surface to filter at the edge
security overview
Common Vulnerabilities:
- Brute-force attacks due to weak authentication.
- Exploitation of unencrypted sessions via packet sniffing or man-in-the-middle attacks.
- Unauthorized access if the port is unintentionally exposed to the internet.
Mitigations:
- Employ strong, complex passwords and enable multi-factor authentication where possible.
- Tunnel connections over encrypted channels such as SSH or VPN.
- Restrict port exposure with firewalls, allowing only trusted IP ranges.
- Regularly audit remote access permissions and monitor connection attempts to detect anomalies.
- Keep remote desktop software up-to-date to avoid known exploits.
Related Ports
the 8 most looked-up other ports in remote access — 110 ports carry that label.
| port | service | risk | |||
|---|---|---|---|---|---|
| :8000 | Intel Remote Desktop / Alternate HTTP Port | TCP | Web Services | safe | 84.3k |
| :8888 | D2GS Admin Console | TCP | Remote Access | caution | 83.7k |
| :8881 | Atlasz Secure Server | TCP | Web Services | caution | 67.6k |
| :5938 | TeamViewer | TCPUDP | Remote Access | caution | 65.0k |
| :8291 | Winbox MikroTik Admin | TCP | Security | caution | 62.9k |
| :8008 | IBM HTTP Server Admin | TCP | Web Services | caution | 58.3k |
| :135 | Microsoft EPMAP | TCPUDP | Security | caution | 51.9k |
| :23 | Telnet | TCP | Remote Access | caution | 34.8k |
risk mix of the 8 listed
- safe13%
- caution88%
0 of 8 encrypted