This guide explains how to increase the buffer size for URL + cookies accepted by the server in incoming http/https requests.
This is done by modifying the relevant configurations in Nginx and Apache. Below is a step-by-step guide to making these changes.
Nginx Configuration
By default, Nginx limits the size of request headers, which affects how large cookies can be. To increase this limit, edit the nginx.conf file and adjust the `large_client_header_buffers` setting.
Steps:
1. Open the Nginx configuration file:
2. Find and modify (or add) the following line:
This increases the buffer size, allowing larger headers.
3. Alternatively, you can use `sed` to automate the change:
4. Restart Nginx to apply changes:
Apache Configuration
For Apache, the relevant setting is `LimitRequestFieldSize`, which controls the maximum size of an HTTP request header field.
Steps:
1. Open the Apache configuration file:
2. Add or modify the following line:
If the directive already exists, update its value. If not, add it at the end of the file.
3. Alternatively, you can automate this using:
4. Restart Apache to apply the changes:
This is done by modifying the relevant configurations in Nginx and Apache. Below is a step-by-step guide to making these changes.
Nginx Configuration
By default, Nginx limits the size of request headers, which affects how large cookies can be. To increase this limit, edit the nginx.conf file and adjust the `large_client_header_buffers` setting.
Steps:
1. Open the Nginx configuration file:
Code:
sudo mcedit /etc/nginx/nginx.conf2. Find and modify (or add) the following line:
Code:
large_client_header_buffers 8 16k;This increases the buffer size, allowing larger headers.
3. Alternatively, you can use `sed` to automate the change:
Code:
sudo sed -i "s#large_client_header_buffers.*#large_client_header_buffers 8 16k;#g" /etc/nginx/nginx.conf4. Restart Nginx to apply changes:
Code:
sudo systemctl restart nginxApache Configuration
For Apache, the relevant setting is `LimitRequestFieldSize`, which controls the maximum size of an HTTP request header field.
Steps:
1. Open the Apache configuration file:
Code:
sudo mcedit /etc/apache2/apache2.conf2. Add or modify the following line:
Code:
LimitRequestFieldSize 16380If the directive already exists, update its value. If not, add it at the end of the file.
3. Alternatively, you can automate this using:
Code:
sudo sed -i '/LimitRequestFieldSize/d' /etc/apache2/apache2.confsudo echo "LimitRequestFieldSize 16380" >> /etc/apache2/apache2.conf4. Restart Apache to apply the changes:
Code:
sudo systemctl restart apache2Statistics: Posted by isscbta — Mon Mar 17, 2025 11:09 am