Is port 8291 (Winbox (MikroTik)) dangerous?

Port 8291 is classified as critical risk and should not be exposed to the public internet. It transmits data without encryption, making it vulnerable to eavesdropping and credential theft.

Should port 8291 be open on my firewall?

No, port 8291 should not be open to the public internet. Block it at the firewall and use encrypted alternatives such as SSH, SFTP, or HTTPS instead.

What transport protocol does port 8291 use?

Port 8291 (Winbox (MikroTik)) uses the TCP transport protocol and falls under the Remote Access category.

:8291 (TCP)

Winbox (MikroTik)

Critical Risk

TCP — Remote Access

Port Overview

Port Number 8291

Service Name Winbox (MikroTik)

Transport Protocol TCP

Category Remote Access

Security Risk Critical

Port Range Registered (1024-49151)

What is Port 8291?

Port 8291 is used by MikroTik's proprietary Winbox management protocol for configuring RouterOS-based routers and switches. The Winbox desktop application connects to this port to provide a GUI for network device management. Multiple critical vulnerabilities have been discovered in the Winbox protocol, including CVE-2018-14847 (Chimay Red) which allowed credential extraction without authentication.

TCP Remote Access Commonly Used

Security Considerations

Port 8291 (Winbox (MikroTik)) is classified as critical risk. This port should not be exposed to the public internet. The service transmits data without encryption, making it vulnerable to eavesdropping, credential theft, and man-in-the-middle attacks.

Recommendation: Block this port at the firewall. Use encrypted alternatives (SSH, SFTP, HTTPS) instead.

Related Ports — Remote Access

22 SSH 23 Telnet 57 Private Terminal Access 89 SU/MIT Telnet Gateway 95 SUPDUP 107 Remote Telnet 177 XDMCP 219 Uarps

Related Terms

SSL/TLS Certificate DDoS DNS Spoofing Encryption Firewall HTTPS