[tor-talk] Invitation to try experimental Snowflake Tor Browser packages

David Fifield david at bamsoftware.com
Fri Mar 6 08:28:32 UTC 2020


On Tue, Mar 03, 2020 at 10:38:06AM +0100, john doe wrote:
> What range of UDP port do I need to open for snowflake to work properly
> alternatively how can I restrict the UDP port used by snowflake?

You will need to open at least UDP port 19302 for communication with the
STUN server, but even after that there is a peer-to-peer WebRTC
connection that I believe just uses random ephemeral UDP ports.

There's no way to restrict to port selection. Snowflake isn't meant to
work in an environment where UDP is blocked by default; that would
require a different set of design tradeoffs. So don't feel obliged to
try to make it work with your local firewall. Thanks for giving it a
try.


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