# Snowflake proxy port requirements

**URL:** https://forum.torproject.org/t/snowflake-proxy-port-requirements/21434
**Category:** Relay Operator
**Tags:** snowflake
**Created:** [April 5, 2026, 9:44pm UTC](https://forum.torproject.org/t/snowflake-proxy-port-requirements/21434 "2026-04-05T21:44:06Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![WofWca](https://forum.torproject.org/user_avatar/forum.torproject.org/wofwca/32/2302_2.png) [@WofWca](https://forum.torproject.org/u/WofWca)
#### Post date: [April 19, 2026, 12:26pm UTC](https://forum.torproject.org/t/snowflake-proxy-port-requirements/21434/3 "2026-04-19T12:26:23Z")

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To make the traffic less suspicious one should not limit the port range.

However, lowest possible port range would be 1 (or ~2?). As long as you set `-capacity` to 1.

The “2-3 per client” discussion originated here I believe:

> [@Remote returned status code 400](https://forum.torproject.org/t/remote-returned-status-code-400/15026/6):
>
> I have to use -ephemeral-ports-range as I have to open and forward ports in my router. With -ephemeral-ports-range 40731:40733 -capacity 3 (3 ports for 3 clients) there is the above mentioned 400 error. With -ephemeral-ports-range 40731:40736 -capacity 3 (6 ports for 3 clients) all is fine. Is this documented anywhere?

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