# Configuring Firewalls

#### Ports used by Sansar

If you are having trouble updating or connecting to Sansar, you may need to configure your computer's or network's firewall (typically by [port forwarding](https://en.wikipedia.org/wiki/Port_forwarding)) to allow the use of certain ports by your computer.

The ports used by our services are as follows:

| TCP         | <ul><li>80</li><li>443</li></ul>          |
| ----------- | ----------------------------------------- |
| TCP and UDP | <ul><li>20000-20999 (inclusive)</li></ul> |

#### Disabling UDP

You can force Sansar to run without UDP by using the command line option:

**`-networking.useTcp=true`**

It is not ideal to use TCP only, and you may notice degraded performance. You should only attempt this solution if you believe UDP has been blocked by your network administrator and you cannot contact them to change your firewall's rules.

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