# Firewall Rules

**Category:** General
**URL:** https://www.simtex.com.au/support/kb/general/firewall-rules
**Published:** 2020-06-16

Audio / media traffic flows through various gateways within Simtex, hence if you are having issues with one-way or no-way audio/media you may need to open up…

> **Warning:**
> In most circumstances you will not need to add firewall rules to your router in order for our VoIP services to work normally

Audio / media traffic flows through various gateways within Simtex, hence if you are having issues with one-way or no-way audio/media you may need to open up traffic from the following ranges and ports.

###### IP Ranges

203.32.124.160/27

203.30.19.0/24

202.74.176.160/28

202.74.176.176/29

203.7.224.128/27

###### Signalling

- UDP Port: 5060

- TCP Ports: 5060-5062

###### Media

- UDP Ports: 10000 through 20000

- UDP Ports: 40000 through 59000

- UDP Ports: 4000-4999

## Related

- Article: https://www.simtex.com.au/support/kb/general/firewall-rules
- Category: https://www.simtex.com.au/support/kb/general
- Knowledge Base: https://www.simtex.com.au/support/kb
- Full AI reference: https://www.simtex.com.au/llms-full.txt