[tor-relays] snowflake incoming UDP ports

I do simply run here ~/devel/go/src/snowflake/proxy/proxy &>>/tmp/snowflake-proxy.log & and was wondering if I have to open special UDP inbound ports ? From the stats snowflake iseems to be working: 2022/02/18 19:29:59 In the last 1h0m0s, there are 13 connections. Traffic Relayed ↑ 192 MB, ↓ 192 MB. 2022/02/18 20:29:59 In the last 1h0m0s, there are 21 connections. Traffic Relayed ↑ 451 MB, ↓ 451 MB. 2022/02/18 21:29:59 In the last 1h0m0s, there are 9 connections. Traffic Relayed ↑ 236 MB, ↓ 236 MB. but b/c I do have a rather restrict inbound firewall rule set I'm wondering about that. -- Toralf