S

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-S option (httpd)
sample scripts, removing for security
Satisfy directive
scalability, definition of
ScanErrLog
Script directive
ScriptAlias directive
ScriptLog directive
ScriptLogBuffer directive
ScriptLogLength directive
scrop, per-directory configuration files
sections, definition of
Secure HTTP [See SSL.]
Secure Sockets Layer/Transport Layer Security [See SSL.]
security [See also access control; authentication; authorization.]
     CGI scripts, disabling unneeded scripts
     DAV
     differences in Apache versions
     modules, disabling unneeded modules
     permissions, checking
     proxy functionality, limiting/disabling
     restricting access by default
     sample scripts, removing
     updating Apache
segmentation faults
selecting MPMs
self-signed certificates
server names, specifying
server side includes [See SSI.]
server-generated error messages, IE and
server-parsed content handler, configuring SSI
Server: headers, changing for access control
ServerAlias directive
ServerName directive
     IP-based virtual hosts, configuring
     name-based virtual hosts
     server names, specifying
ServerRoot directive 2nd
servers
ServerTokens directive
SetEnv directive
SetEnvIf directive 2nd
SetFilter directive
SetHandler directive 2nd
SIGHUP, kill command and
Simple Network Management Protocol [See SNMP, monitoring Apache with.]
sitecopy, accessing DAV
Skype, port conflicts with
slashes (/), trailing slash problems
SNMP, monitoring Apache with
source tarballs, downloading
special environment variables [See also environment variables.]
spelling, fixing URL spelling mistakes
splitting log files
Squid proxy
SSI
     configuring
     overview
SSL
     alternatives to mod_ssl
     authorization modules and
     buggy implementations, handling
     certificates
         certificate signing requests
         client certificates, creating
         expired certificates
         mismatched domains
         overview
         self-signed certificates
         unknown CAs
     compiling
     complex access control
     configuring Apache
     encryption keys [See also SSL; certificates.]
         overview
         pairs, creating
         password-protected pairs, creating
         passwords, removing
     forcing universal service under
     name-based virtual hosts and
     OpenSSL, compiling
     overview
     performance, improving
     SSLPassPhraseDialog directive
     starting Apache
     testing
         from the command line
         installations of
     virtual hosts and
     warning messages when accessing
     workings of
SSL processing with reverse proxies
SSL/TLS [See SSL.]
SSL_BASE=/usr/local/ssl/, removing
SSLCACertificateFile directive
SSLCertificateFile directive
SSLCertificateKeyFile directives
SSLEngine On directives
SSLOptions directive
SSLPassPhraseDialog directive
SSLRequire directive
SSLVerifyClient directive
starting Apache
     automatic restarts on failure
     graceful restarts
     with SSL support
     troubleshooting
startssl option
startup errors
     address already in use errors
     cannot determine hostname errors
     could not bind to port errors
     module not compatible errors
     permission denied errors
     syntax errors
status settings, tuning Apache
     Accept mechanism
     AcceptFilter directive
     HostnameLookups
     KeepAlives
     mod_status
stopping Apache 2nd
strings, regular expressions [See also regular expressions, definition of.]
stunnel, SSL and
Subject Distinguished Names (DNs)
symbolic links, handling 2nd
symlinks [See symbolic links, handling.]
SymLinksIfOwnerMatch parameter 2nd
symmetric cryptography
syntax errors (startup errors)
syslog facilities
system log daemon, as error log [See also error logs.]