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roethke merged 8 commits into from
Jun 24, 2026
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docs: add ephemeral port range guidance for ACL users #1663

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8a6c925
added design and updated agents.md
soheimam Jun 23, 2026
b244b5a
chore: regenerate docs/AGENTS.md (post-commit of 8a6c925)
soheimam Jun 23, 2026
fb0caab
add precompile addresses section
roethke Jun 23, 2026
5a69a43
add x-referencing, variant table
roethke Jun 23, 2026
6eea5b5
add mainnet tab, activation registry callout, remove flag
roethke Jun 23, 2026
bb25083
link to base-anvil repo
roethke Jun 23, 2026
a9cb4a2
docs: add ephemeral port range guidance to networking section
roethke Jun 24, 2026
7177027
chore: resolve merge conflict in b20.mdx
roethke Jun 24, 2026
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4 changes: 4 additions & 0 deletions docs/base-chain/node-operators/run-a-base-node.mdx
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Expand Up @@ -53,6 +53,10 @@ Configure your firewall to allow the following ports for peer discovery and sync
<Note>
Ports `9200` (UDP) and `30301` (TCP/UDP) are required to reach Base bootnodes. If outbound traffic to these ports is blocked, your node will fail to establish initial peer connections.
</Note>

<Warning>
If you use network ACLs (rather than stateful security groups such as AWS SGs) for egress control, you must also allow outbound traffic on the ephemeral port range **32768–60999** (TCP/UDP). Stateful firewalls track return traffic automatically; ACLs do not, so without this rule, response packets from peers are silently dropped.
</Warning>
</Tab>
</Tabs>

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