Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 2.13 Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 confusing Port and BindAddress directives are gone; only the LISTEN directive is used for IP address binding; the SERVER- NAME directive specifies the server name and port number only for redirection and vhost overwrite that file with arbitrary data. If the log files themselves are writeable (by a non-root user), then someone may be able to overwrite the log itself with bogus data. 13http://httpd.apache.org/lists

Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 2.13 Binding to Addresses and Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 537 10.35 Apache Module mod data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540 10.36 Apache Module loaded, it will now set some default timeouts. • MOD DUMPIO: DUMPIOLOGLEVEL is no longer supported. Data is always logged at LOGLEVEL trace7. 1.1. UPGRADING TO 2.4 FROM 2.2 5 • On Unix platforms, piped

Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 2.13 Binding to Addresses and Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 537 10.35 Apache Module mod data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540 10.36 Apache Module loaded, it will now set some default timeouts. • MOD DUMPIO: DUMPIOLOGLEVEL is no longer supported. Data is always logged at LOGLEVEL trace7. 1.1. UPGRADING TO 2.4 FROM 2.2 5 • On Unix platforms, piped

Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 2.13 Binding to Addresses and Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 . . . . . . . . . . . . . . . . . . . . . . . . . . . 582 CONTENTS vii 10.37 Apache Module mod data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585 10.38 Apache Module loaded, it will now set some default timeouts. • MOD DUMPIO: DUMPIOLOGLEVEL is no longer supported. Data is always logged at LOGLEVEL trace7. • On Unix platforms, piped logging commands configured using

Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 2.13 Binding to Addresses and Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 . . . . . . . . . . . . . . . . . . . . . . . . . . . 582 CONTENTS vii 10.37 Apache Module mod data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585 10.38 Apache Module loaded, it will now set some default timeouts. • MOD DUMPIO: DUMPIOLOGLEVEL is no longer supported. Data is always logged at LOGLEVEL trace7. • On Unix platforms, piped logging commands configured using

loaded, it will now set some default timeouts. mod_dumpio: DumpIOLogLevel is no longer supported. Data is always logged at LogLevel trace7. On Unix platforms, piped logging commands configured using either now skip compression if it knows that the size overhead added by the compression is larger than the data to be compressed. Multi-language error documents from 2.2.x may not work unless they are adjusted mod_buffer Provides for buffering the input and output filter stacks mod_data Convert response body into an RFC2397 data URL mod_ratelimit Provides Bandwidth Rate Limiting for Clients mod_request

loaded, it will now set some default timeouts. mod_dumpio: DumpIOLogLevel is no longer supported. Data is always logged at LogLevel trace7. On Unix platforms, piped logging commands configured using either now skip compression if it knows that the size overhead added by the compression is larger than the data to be compressed. Multi-language error documents from 2.2.x may not work unless they are adjusted mod_buffer Provides for buffering the input and output filter stacks mod_data Convert response body into an RFC2397 data URL mod_ratelimit Provides Bandwidth Rate Limiting for Clients mod_request

Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 2.13 Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 confusing Port and BindAddress directives are gone; only the LISTEN directive is used for IP address binding; the SERVER- NAME directive specifies the server name and port number only for redirection and vhost likely degrade performance. Operating System Caching Almost all modern operating systems cache file-data in memory managed directly by the kernel. This is a powerful feature, and for the most part operating

loaded, it will now set some default timeouts. mod_dumpio: DumpIOLogLevel is no longer supported. Data is always logged at LogLevel trace7. On Unix platforms, piped logging commands configured using either now skip compression if it knows that the size overhead added by the compression is larger than the data to be compressed. Multi-language error documents from 2.2.x may not work unless they are adjusted mod_buffer Provides for buffering the input and output filter stacks mod_data Convert response body into an RFC2397 data URL mod_ratelimit Provides Bandwidth Rate Limiting for Clients mod_request

loaded, it will now set some default timeouts. mod_dumpio: DumpIOLogLevel is no longer supported. Data is always logged at LogLevel trace7. On Unix platforms, piped logging commands configured using either now skip compression if it knows that the size overhead added by the compression is larger than the data to be compressed. Multi-language error documents from 2.2.x may not work unless they are adjusted mod_buffer Provides for buffering the input and output filter stacks mod_data Convert response body into an RFC2397 data URL mod_ratelimit Provides Bandwidth Rate Limiting for Clients mod_request