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Always firewall invalid ports #243

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Merged
mafintosh merged 1 commit into from
Mar 23, 2026
Merged

Always firewall invalid ports #243

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2 changes: 2 additions & 0 deletions lib/server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -280,6 +280,8 @@ module.exports = class Server extends EventEmitter {
hs.rawStream = this.dht.createRawStream({
framed: true,
firewall(socket, port, host) {
if (!(port > 0 && port < 65536)) return true

// Check if the traffic originated from the socket on which we're expecting relay traffic. If so,
// we haven't hole punched yet and the other side is just sending us traffic through the relay.
if (hs.relaySocket && isRelay(hs.relaySocket, socket, port, host)) {
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