The security of US servers can be ensured by configuring the TLS version, which is the transport layer security protocol, and the encryption suite, which is a set of algorithms that TLS uses to encrypt data, verify data integrity, and authenticate identities. How do I configure the TLS version and encryption suite on a US server?

Ensure that the server operating system and related software are of the latest version, and configure the TLS version and encryption suite on the Apache server. To install mod_ssl:

sudo apt-get install libapache2-mod-ssl

Edit the Apache configuration file, usually /etc/apache2/sites-available/default-ssl.conf or the virtual host configuration file, and add or modify the following configuration:

<VirtualHost _default_:443>

ServerAdmin webmaster@yourdomain.com

DocumentRoot /var/www/html

SSLEngine on

SSLCertificateFile /etc/ssl/certs/yourdomain.com.crt

SSLCertificateKeyFile /etc/ssl/private/yourdomain.com.key

SSLCertificateChainFile /etc/ssl/certs/chain.pem

# Enforce TLS version

SSLProtocol -all +TLSv1.2 +TLSv1.3

# Set the encryption suite

SSLCipherSuite HIGH:! aNULL:! MD5:! 3DES:! CAMELLIA:! PSK:! SRP:! DSS

SSLHonorCipherOrder on

<Directory /var/www/html>

Options Indexes FollowSymLinks

AllowOverride All

Require all granted

</Directory>

</VirtualHost>

Restart Apache

sudo systemctl restart apache2

Nginx uses the ssl module to support TLS/SSL. Configure the TLS version and encryption suite in Nginx. Installation:

sudo apt-get install nginx

Locate the nginx configuration file (usually /etc/nginx/sites-availables/default) and add or modify the following configuration:

server {

listen 443 ssl;

server_name yourdomain.com;

ssl_certificate /etc/ssl/certs/yourdomain.com.crt;

ssl_certificate_key /etc/ssl/private/yourdomain.com.key;

ssl_protocols TLSv1.2 TLSv1.3;

ssl_ciphers HIGH:! aNULL:! MD5:! 3DES:! CAMELLIA:! PSK:! SRP:! DSS;

ssl_prefer_server_ciphers on;

location / {

root /var/www/html;

index index.html index.htm;

}

}

Restart Nginx

sudo systemctl restart nginx

If you use OpenSSL to configure TLS directly, here are the steps to configure the TLS version and encryption suite.

Find and edit the OpenSSL configuration file (usually /etc/ssl/openssl.cnf or /usr/lib/ssl/openssl.cnf) and add or modify the following configuration:

[ system_default_sect ]

MinProtocol = TLSv1.2

CipherString = DEFAULT@SECLEVEL=2

After configuring the TLS version and encryption suite, it is recommended to use an online or command-line tool to test your TLS configuration to ensure its security and correctness.

Visit SSL Labs and enter your domain name to view a detailed TLS configuration report. Using the OpenSSL command line tool:

openssl s_client -connect yourdomain.com:443 -tls1_2

openssl s_client -connect yourdomain.com:443 -tls1_3

Common TLS configuration considerations:

Disable insecure TLS versions, such as TLS 1.0 and TLS 1.1, which are no longer considered secure.

Select strong encryption suite: Avoid using weak encryption suite, such as DES, 3DES, and RC4.

Configuring HSTS: HTTP Strict Transport Security (HSTS) can help prevent SSL stripping attacks.

To configure HSTS in Apache:

Header always set Strict-Transport-Security "max-age=31536000;  includeSubDomains"

HSTS is configured in Nginx

add_header Strict-Transport-Security "max-age=31536000;  includeSubDomains" always;

Configure the TLS version and encryption suite to improve the security of your servers in the United States. Whether you're using Apache, Nginx, or configuring OpenSSL, ensuring that insecure TLS versions and encryption suites are disabled is key. Regularly testing TLS configurations, keeping server software updated, and using additional security measures such as HSTS can effectively protect data and applications.