Lighttpd Advanced security
For higher security Lighttpd can be configured to allow https access.
Generate Certificate and Keys
Either generate the public key and certificate and private key using openssl, or by using the ones generated by installing ACF. You don't need to do both, just do one or the other. The former method, with OpenSSL, is preferred since it gives greater control.
Generate self-signed certificates with openssl
To generate certificates, openssl is needed.
apk add openssl
Change to the lighttpd configuration directory
cd /etc/lighttpd
With the command below the self-signed certificate and key pair are generated. A 2048 bit key is the minimum recommended at the time of writing, so we use '-newkey rsa:2048' in the command. Change to suit your needs. Answer all questions.
openssl req -newkey rsa:2048 -x509 -keyout server.pem -out server.pem -days 365 -nodes
Adjust the permissions
chmod 400 /etc/lighttpd/server.pem
Generate self-signed certificates with acf
Install the ACF
setup-acf
Copy the generated certificate to the lighttpd configuration directory.
mv /etc/ssl/mini_httpd/server.pem /etc/lighttpd/server.pem
Adjust the permissions
chown root:root /etc/lighttpd/server.pem
chmod 400 /etc/lighttpd/server.pem
mini_http is no longer needed.
/etc/init.d/mini_httpd stop && rc-update del mini_httpd
Removing the mini_http package
apk del mini_httpd
Configure Lighttpd
The configuration of lighttpd needs to be modified.
nano /etc/lighttpd/lighttpd.conf
Uncomment this section and adjust the path so 'ssl.pemfile' points to where our cert/key pair is stored. Or copy the example below into your configuration file if you saved it to /etc/lighttpd/server.pem.
ssl.engine = "enable" ssl.pemfile = "/etc/lighttpd/server.pem"
You'll also want to set the server to listen on port 443. Replace this:
server.port = 80
with this:
server.port = 443
Restart lighttpd
rc-service lighttpd restart
Security
To help mitigate the BEAST attack add the following to your configuration:
#### Mitigate BEAST attack: # A stricter base cipher suite. For details see: # http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-3389 # or # http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3389 ssl.cipher-list = "ECDHE-RSA-AES256-SHA384:AES256-SHA256:RC4-SHA:RC4:HIGH:!MD5:!aNULL:!EDH:!AESGCM" # Make the server prefer the order of the server side cipher suite instead of the client suite. # This is necessary to mitigate the BEAST attack (unless you disable all non RC4 algorithms). # This option is enabled by default, but only used if ssl.cipher-list is set. # ssl.honor-cipher-order = "enable" # Mitigate CVE-2009-3555 by disabling client triggered renegotiation # This option is enabled by default. # ssl.disable-client-renegotiation = "enable" #