Is port 9051 (Tor Control Port) dangerous?

Port 9051 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 9051 be open on my firewall?

Port 9051 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 9051 use?

Port 9051 (Tor Control Port) uses the TCP transport protocol and falls under the Security & VPN category.

:9051 (TCP)

Tor Control Port

Medium Risk

TCP — Security & VPN

Port Overview

Port Number 9051

Service Name Tor Control Port

Transport Protocol TCP

Category Security & VPN

Security Risk Medium

Port Range Registered (1024-49151)

What is Port 9051?

Port 9051 is the Tor control port, which allows local applications to control and monitor the Tor daemon using the Tor Control Protocol. Tools like Vidalia, Arm, and nyx use this port to display Tor circuit information, configure settings, and manage the Tor process. This port is secured by a cookie or password and is only accessible locally.

TCP Security & VPN

Security Considerations

Port 9051 (Tor Control Port) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.

Recommendation: Keep the service updated. Monitor logs for unusual activity.

Related Ports — Security & VPN

31 MSG-AUTH 48 Auditd 49 TACACS 56 XNS-AUTH 62 ACA Services 65 TACACS-DS 88 Kerberos 90 DNSIX Security

Related Terms

SSL/TLS Certificate DDoS DNS Spoofing Encryption Firewall HTTPS