Apache HTTP Server Installation and Configuration

The Apache HTTP server and the mod_ssl Apache module should have already been installed as dependencies for the td-hostserver RPM package. You can verify this with the following command:

[root@hostserver ~]# yum install httpd mod_ssl
Setting up Install Process
Package httpd-2.2.15-30.0.1.el6_5.x86_64 already installed and latest version
Package 1:mod_ssl-2.2.15-30.0.1.el6_5.x86_64 already installed and latest version
Nothing to do

Note

CentOS 6 is shipped with Apache 2.2 and CentOS 7 with Apache 2.4. For this reason we include a section for each version of the Web-server below.

Update httpd.conf

Open the web server configuration file /etc/httpd/conf/httpd.conf in a text editor to change the following parameters:

KeepAlive On
KeepAliveTimeout 2
ServerName <Your ServerName>

For security reasons, we also advise to disable the so-called “Server Signature” - a feature that adds a line containing the server version and virtual host name to server-generated pages (e.g. internal error documents, FTP directory listings, etc):

ServerSignature Off

By default, the server version and operating system is also displayed in the Server response header field, e.g. Server: Apache/2.2.15 (CentOS). To suppress this output, we suggest to update the ServerTokens option as follows:

ServerTokens Prod

Disable Unneeded Apache Modules

Apache 2.2 (CentOS 6)

The TeamDrive Host Server only requires a few Apache modules to be enabled. To reduce the memory footprint, please deactivate unnecessary modules in the apache configuration. Only the following modules should be left enabled in /etc/httpd/conf/httpd.conf:

LoadModule actions_module modules/mod_actions.so
LoadModule alias_module modules/mod_alias.so
LoadModule authz_host_module modules/mod_authz_host.so
LoadModule autoindex_module modules/mod_autoindex.so
LoadModule headers_module modules/mod_headers.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule mime_module modules/mod_mime.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule setenvif_module modules/mod_setenvif.so

You also need to comment out the following variables in /etc/httpd/conf/httpd.conf, to avoid syntax errors caused by the disabled modules:

# DirectoryIndex index.html index.html.var
# LanguagePriority en ca cs da de el eo es et fr he hr it ja ko ltz nl nn no
pl pt pt-BR ru sv zh-CN zh-TW
# ForceLanguagePriority Prefer Fallback
# BrowserMatch "Mozilla/2" nokeepalive
# BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0
# BrowserMatch "RealPlayer 4\.0" force-response-1.0
# BrowserMatch "Java/1\.0" force-response-1.0
# BrowserMatch "JDK/1\.0" force-response-1.0
# BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
# BrowserMatch "MS FrontPage" redirect-carefully
# BrowserMatch "^WebDrive" redirect-carefully
# BrowserMatch "^WebDAVFS/1.[0123]" redirect-carefully
# BrowserMatch "^gnome-vfs/1.0" redirect-carefully
# BrowserMatch "^XML Spy" redirect-carefully
# BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully

Apache 2.4 (CentOS 7)

In the directory: /etc/httpd/conf.modules.d comment out all modules in the following config files. Using the linux stream editor (sed) with the following regular expression will add a ‘#’ comment sign in each line starting with ‘LoadModule’:

sed -e '/LoadModule/ s/^#*/#/' -i /etc/httpd/conf.modules.d/00-dav.conf
sed -e '/LoadModule/ s/^#*/#/' -i /etc/httpd/conf.modules.d/00-lua.conf
sed -e '/LoadModule/ s/^#*/#/' -i /etc/httpd/conf.modules.d/00-proxy.conf
sed -e '/LoadModule/ s/^#*/#/' -i /etc/httpd/conf.modules.d/01-cgi.conf

Edit /etc/httpd/conf.modules.d/00-base.conf and leave only the following modules enabled by adding a ‘#’ comment in front of all other modules:

LoadModule alias_module modules/mod_alias.so
LoadModule authz_core_module modules/mod_authz_core.so
LoadModule autoindex_module modules/mod_autoindex.so
LoadModule headers_module modules/mod_headers.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule mime_module modules/mod_mime.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule slotmem_shm_module modules/mod_slotmem_shm.so
LoadModule socache_shmcb_module modules/mod_socache_shmcb.so
LoadModule unixd_module modules/mod_unixd.so
LoadModule version_module modules/mod_version.so

Configure mod_ssl

The web-based TeamDrive Hosting Service Administration Console should be accessed via an encrypted SSL connection. To facilitate this, add the following to the end of the default <VirtualHost> section in /etc/httpd/conf.d/ssl.conf:

Include conf.d/td-hostserver.httpd.conf.ssl
</VirtualHost>

Note

The Apache HTTP Server package includes a self-signed SSL certificate for testing purposes. If you connect to the server using a web browser, it will likely raise an error about an untrusted/insecure connection. You should consider replacing this certificate with an appropriate one.

Follow the instructions provided by your certificate authority on how to obtain and install an SSL certificate for the Apache HTTP Server.

Verify your SSL configuration using the service from SSL Labs: https://www.ssllabs.com/ssltest/analyze.html and make sure that the “Handshake Simulation” is working for current platforms and browser. The following ssl parameters for the apache web server will create an A-rating and make sure that the handshake is working for current platforms and browser:

SSLProtocol all -SSLv2 -SSLv3

SSLHonorCipherOrder on

SSLCipherSuite ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS