Proxy headers forwarding in Nginx - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to forward the original client's IP address using the correct header.

Nginx

proxy_set_header [1] $remote_addr;

Drag options to blanks, or click blank then click option'

AUser-Agent

BHost

CX-Forwarded-For

DContent-Type

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Host' instead of 'X-Forwarded-For' will not forward the client IP.

Setting 'Content-Type' or 'User-Agent' headers here is unrelated.

The X-Forwarded-For header is used to forward the original client's IP address through the proxy.

2fill in blank

medium

Complete the code to forward the original Host header to the backend server.

Nginx

proxy_set_header [1] $host;

Drag options to blanks, or click blank then click option'

AAuthorization

BX-Forwarded-For

CReferer

DHost

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'X-Forwarded-For' here forwards the client IP, not the host.

Headers like 'Referer' or 'Authorization' are unrelated.

The Host header forwards the original domain name requested by the client.

3fill in blank

hard

Fix the error in the code to correctly forward the original protocol (http or https).

Nginx

proxy_set_header X-Forwarded-Proto [1];

Drag options to blanks, or click blank then click option'

A$request_uri

B$scheme

C$remote_addr

D$host

Attempts:

3 left

💡 Hint

Common Mistakes

Using $host or $remote_addr will not give the protocol.

Using $request_uri is the URL path, not the protocol.

The $scheme variable holds the original protocol (http or https) used by the client.

4fill in blank

hard

Fill both blanks to forward the original client IP and the original protocol correctly.

Nginx

proxy_set_header [1] $remote_addr;
proxy_set_header [2] $scheme;

Drag options to blanks, or click blank then click option'

AX-Forwarded-For

BHost

CX-Forwarded-Proto

DUser-Agent

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up Host with X-Forwarded-For.

Using User-Agent instead of protocol header.

X-Forwarded-For forwards the client IP, and X-Forwarded-Proto forwards the protocol.

5fill in blank

hard

Fill all three blanks to forward the original client IP, host, and protocol headers correctly.

Nginx

proxy_set_header [1] $remote_addr;
proxy_set_header [2] $host;
proxy_set_header [3] $scheme;

Drag options to blanks, or click blank then click option'

AX-Forwarded-For

BHost

CX-Forwarded-Proto

DReferer

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Referer' instead of protocol header.

Swapping Host and X-Forwarded-For headers.

These three headers forward the client IP, original host, and protocol respectively.