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fix(doc): Clarify inbound and outbound port requirements #5584

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Nov 8, 2022
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fix(doc): Clarify inbound and outbound port requirements #5584

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5 changes: 4 additions & 1 deletion README.md
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Expand Up @@ -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)
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