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Port 5060SIP

Session Initiation Protocol (SIP) is a widely used signaling protocol that enables the initiation, management, and termination of real-time communication sessions such as voice, video, and messaging over IP networks. It plays a critical role in the operation of Voice over IP (VoIP) services, allowing different devices and applications to establish connections seamlessly..

inNetwork ServicesVoice and Chat
transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
3/10

caution

lookups
11,394

rank 360 of 993 · top 36%

Technical Details

what runs on :5060

Session Initiation Protocol (SIP) is a text-based protocol designed for establishing, modifying, and terminating multimedia sessions across Internet Protocol (IP) networks. SIP operates primarily at the application layer and facilitates call setup, management, transfer, and teardown, serving as the foundation for Voice over IP (VoIP), video conferencing, and instant messaging applications.

SIP uses a request-response transaction model similar to HTTP, with defined methods such as INVITE, ACK, BYE, REGISTER, and CANCEL. These requests help negotiate media capabilities via protocols like SDP (Session Description Protocol) and establish peer-to-peer media streams typically handled over RTP (Real-time Transport Protocol), while SIP itself does not carry the media payload.

SIP can operate over UDP, TCP, or TLS for encrypted transport on various ports, but port 5060 is the standard port for unencrypted SIP traffic. Its flexibility and text-based simplicity make it extensible, but the protocol’s use of clear-text messaging poses certain risks if not secured properly.

Security Information

exposure of :5060

risk score

3/ 10caution

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

network services averages 3.9 across 604 ports — this one sits 0.9 below.

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

Common Vulnerabilities:

  • Unauthorized access: Weak authentication may allow attackers to hijack SIP sessions for toll fraud or impersonation.
  • Eavesdropping: Since SIP signaling on port 5060 is typically unencrypted, sensitive user information or call metadata can be intercepted.
  • Denial of Service (DoS): Attackers can flood SIP services with malformed requests or registration attempts, disrupting legitimate communication.
  • SIP protocol fuzzing: Exploiting parsing vulnerabilities through crafted SIP messages may lead to buffer overflows or server crashes.

Mitigations:

  • Use SIP over TLS (typically on port 5061) to encrypt signaling and authenticate endpoints, preventing interception.
  • Enforce strong authentication (e.g., digest authentication with secure credentials) and implement access controls.
  • Deploy SIP-aware firewalls and intrusion detection that can filter suspicious SIP messages and prevent DoS.
  • Rate-limit registration and call attempts to reduce brute force and flooding risks.
  • Keep SIP server software up to date with the latest security patches to address known vulnerabilities.

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all 604 in network services →

the 8 most looked-up other ports in network services — 604 ports carry that label.

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risk mix of the 8 listed

  • caution100%

0 of 8 encrypted