--- title: "Ports required for VPN Less access to Cintra IQ" slug: "ports-required-for-vpn-less-access-to-cintra-iq" description: "Ports and URLs to whitelist so proxy servers and packet scanning don't interfere with VPN Less access to Cintra iQ." updated: 2026-06-10T11:26:21Z published: 2026-06-10T11:26:21Z canonical: "help.cintra.co.uk/ports-required-for-vpn-less-access-to-cintra-iq" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.cintra.co.uk/llms.txt > Use this file to discover all available pages before exploring further. # Ports required for VPN Less access to Cintra IQ

VPN Less access is a feature that allows you to access Cintra IQ without using a VPN connection. This can improve your performance and user experience when working remotely. However, some clients may have proxy servers and/or packet scanning appliances that can interfere with the VPN Less access. To avoid this, you need to whitelist some ports and URLs to avoid traffic redirection on your corporate networks.

Ports and URLs to whitelist

The following table lists the ports and URLs that you need to whitelist for VPN Less access to Cintra IQ. These are the sites and services that are required for the VPN Less feature to work properly:

Site/Service

URL

Port

Payroll Engine

payrollengine.cintra.co.uk

TCP/UDP 443, 3389