From 4c3f04eb8095eef1badefe925605c85487d4341c Mon Sep 17 00:00:00 2001 From: teor Date: Wed, 9 Nov 2022 08:54:58 +1000 Subject: [PATCH] Clarify inbound and outbound port requirements (#5584) --- README.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 46ac9d974..a8f28569c 100644 --- a/README.md +++ b/README.md @@ -178,11 +178,14 @@ defaults write com.apple.CrashReporter DialogType none ### Network Ports and Data Usage -By default, Zebra uses the following inbound TCP listener ports: +Zebra uses the following inbound and outbound TCP ports: - 8233 on Mainnet - 18233 on Testnet +Outbound connections are required to sync, inbound connections are optional. +Zebra also needs access to the Zcash DNS seeders, via the OS DNS resolver (usually port 53). + Zebra needs some peers which have a round-trip latency of 2 seconds or less. If this is a problem for you, please [open a ticket.](https://github.com/ZcashFoundation/zebra/issues/new/choose)