How to Port Forward Session Initiation Protocol (sip)

How to Port Forward Session Initiation Protocol (sip)

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PUREVPNpfcgnatHow to Port Forward Session Initiation Protocol (sip)

Session Initiation Protocol, or SIP, is a VoIP signaling protocol used to establish, monitor, and end real-time sessions incorporating voice, video, and messaging applications.

Port forwarding allows you to access a client’s server behind routers, NATs, CGNAT, or firewalls. By opening ports, you can control devices behind the router. This guide will show you how to port forward Session Initiation Protocol (sip).

Requirements to Port Forward Session Initiation Protocol (sip)

Just before you begin with the process of port forwarding, make sure you have the following things:

  • Downloaded and installed the Session Initiation Protocol (sip) server.
  • The IP address of your router.
  • IP address of your device.

TCP and UDP ports of Session Initiation Protocol (sip) are mentioned in the section below.

Step-by-step guide on how to port forward Session Initiation Protocol (sip)

Now that you have the above details noted down, you can move to the next stage of Session Initiation Protocol (sip) port forwarding:

  1. On your web browser address bar, type your router’s IP Address/Default Gateway.
  2. Log in with your router’s credentials (username and password) to view your router’s firmware settings.
  3. Navigate to the port forwarding section of your router.
  4. Click on Port Forwarding.
  5. Enter the IP address of your device in your router in the correct box.
  6. Put the TCP and UDP ports of the Session Initiation Protocol (sip) server in the boxes in your router. The default Session Initiation Protocol (sip) port number is 5060. And then click the apply button.
  7. And you’re done. Restart your router to let the changes take effect.
  8. Once your changes take effect, now you can host a Session Initiation Protocol (sip) server and let your friends connect to it as well. To let them connect to it, you need to provide them the hostname you are using, along with the port number. For example, ‘’.

Session Initiation Protocol (sip) ports needed to run

The default Session Initiation Protocol (sip) ports are:

TCP Port:5060
UDP Port:5060

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Opening a port shouldn’t be complicated. With the Port Forwarding add-on, it’s as simple as 1, 2, and 3!

Ports to forward on devices

Ports to run on PC:

TCP Port:5060
UDP Port:5060

How to open ports behind CGNAT

What if your ISP performs CGNAT? Most ISPs perform CGNAT (Carrier-grade Network Address Translation) to conserve bandwidth and assign a single IP address to multiple users connected to the same internet network. However, CGNAT makes it difficult for you to open ports on the router. 

To get around the CGNAT issue, you can use the Port Forwarding add-on to bypass this problem and port forward routers without hassle. 
Here’s more information on how to use PureVPN’s Port Forwarding add-on and bypass CGNAT in a few clicks.

Open Ports Behind CGNAT

PureVPN’s Port Forwarding Add-on

A secure way to open all ports

To most people, port forwarding is quite a demanding task. For starters, every router has a different console, which often makes it difficult to navigate to specific settings.

Secondly, you won’t always be able to open Session Initiation Protocol (sip) Online ports on your router if your ISP restricts the ports. Yes, you heard that right! ISPs are notorious for blocking ports due to security reasons. If ISP isn’t the reason behind a blocked port, then perhaps it could be your operating system’s firewall.

Well, you can eliminate all these problems with PureVPN’s Port Forwarding add-on. Through the Port Forwarding add-on, you can allow all ports, disallow all ports, and allow specific ports.


Does SIP need port forwarding?

There are technically two types of traffic that need to be forwarded, but for all intents and purposes, we only need to focus on one: SIP signaling. This is the default port used for UDP-based systems, which is 5060. However, it’s always best to check with your specific PBX just in case.

Is port 5060 UDP or TCP?

The Session Initiation Protocol (SIP) is associated with ports 5060 and 5061 on both TCP and UDP by IANA.

Who uses the SIP protocol?

The Session Initiation Protocol (SIP) allows users to communicate with each other using voice, video, and messaging applications. SIP can be used in Internet telephony, private IP telephone systems, and mobile phone calls over LTE (VoLTE).

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