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Send the message only once to let fail2ban do its thing

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Maciej Pędzich
2024-07-30 17:37:51 +02:00
parent 8b64852e34
commit b7c9ff1c68
1 changed files with 9 additions and 13 deletions
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22
index.mjs
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@@ -10,22 +10,17 @@ const randomDelay = () => Math.floor(Math.random() * delayDiff + minDelay);
const server = createServer((req, res) => { const server = createServer((req, res) => {
const connOpenDate = new Date(); const connOpenDate = new Date();
const dateText = connOpenDate.toLocaleString('pl'); const dateText = connOpenDate.toLocaleString('pl');
const attacker = req.headers['x-forwarded-for']; const scannerIP = req.headers['x-forwarded-for'];
const host = req.headers['x-forwarded-host']; const host = req.headers['x-forwarded-host'];
const endpoint = `${req.method} ${req.url}`; const endpoint = `${req.method} ${req.url}`;
let charIdx = 0; let charIdx = 0;
console.log(`[${dateText}] ${attacker} targeted ${host} on ${endpoint}`); console.log(`[${dateText}] ${scannerIP} targeted ${host} on ${endpoint}`);
const hang = () => { const hang = () => {
if (res.closed) return; if (res.closed) return;
else if (charIdx === msg.length) res.end('\n');
if (charIdx === msg.length) { else res.write(msg[charIdx++]);
charIdx = 0;
res.write('\n');
} else {
res.write(msg[charIdx++]);
}
setTimeout(hang, randomDelay()); setTimeout(hang, randomDelay());
}; };
@@ -36,11 +31,12 @@ const server = createServer((req, res) => {
const connCloseDate = new Date(); const connCloseDate = new Date();
const timeDiff = connCloseDate.getTime() - connOpenDate.getTime(); const timeDiff = connCloseDate.getTime() - connOpenDate.getTime();
const dateText = connCloseDate.toLocaleString('pl'); const dateText = connCloseDate.toLocaleString('pl');
const diffText = new Date(timeDiff).toISOString().substring(11, 19); const diffText = new Date(timeDiff).toISOString().substring(14, 19);
console.log( const hangResult =
`[${dateText}] ${attacker} aborted connection after ${diffText}` charIdx === msg.length ? 'received the message' : 'aborted connection';
);
console.log(`[${dateText}] ${scannerIP} ${hangResult} after ${diffText}`);
}); });
}); });