Do HTTP proxy servers modify request packets?
Is any request header added or modified to the HTTP request before forwarding to the server by a proxy server? If so, are the changes done to the same packets, or are the contents used to create new request packets with the modifications? Xenon There are a few different types of proxy servers. Because you've mentioned request headers, I'm going to assume that you're talking about HTTP proxy servers, which forward HTTP requests, not packets. NOTE: In the special case of HTTPS requests (TLS/SSL via CONNECT ), proxy servers will just forward the content of the TCP packets (and are unable to