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463
Too Many IPs in X-Forwarded-For
Example HTTP Response
HTTP Response
HTTP/1.1 463 X-Forwarded-For Header with More Than 30 IP Addresses
Content-Type: text/html
Connection: close
<html><body>Too many IP addresses in X-Forwarded-For header</body></html>Common Causes
- Request passed through more than 30 proxy servers
- Malicious attempt to overflow the X-Forwarded-For header
- Misconfigured proxy chain
- Proxy loop causing IP addresses to accumulate
- Attack vector attempting header manipulation
- Multiple CDN/proxy layers without proper header management
- Nested load balancers without header cleanup
Technical Details
What does this mean?
Your forwarding chain is way too long! It's like a game of telephone that went through 30+ people - we're cutting you off before this gets ridiculous. How many proxies are you going through?!
Technical Definition
The X-Forwarded-For header contains more than 30 IP addresses, exceeding AWS ELB's limit.
Code Snippets
Ready-to-use code for returning this HTTP status in your application:
Node.js
// Express.js
app.get('/example', (req, res) => {
res.status(463).json({
error: 'Too Many IPs in X-Forwarded-For',
message: 'Your error message here'
});
});
// Native HTTP
const http = require('http');
http.createServer((req, res) => {
res.writeHead(463, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({
error: 'Too Many IPs in X-Forwarded-For',
message: 'Your error message here'
}));
}).listen(3000);Related Status Codes