What WWW servers know about you?

Paul Bourke


There are a number of so called "environment" variables that are known and possibly logged whenever you access a page on the WWW. These variables and their values when you accessed this page are shown below. The variable name is on the left, its value on the right.

UNIQUE_ID=WIESikAGiHxgxFpZKlJAqwAAAAE
HTTP_HOST=paulbourke.net
HTTP_ACCEPT_ENCODING=x-gzip, gzip, deflate
HTTP_USER_AGENT=CCBot/2.0 (http://commoncrawl.org/faq/)
HTTP_ACCEPT=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
SERVER_SIGNATURE=
SERVER_SOFTWARE=Apache/2.4.6 (CentOS) PHP/5.4.45
SERVER_NAME=paulbourke.net
SERVER_ADDR=162.249.4.197
SERVER_PORT=80
REMOTE_HOST=ec2-54-205-153-63.compute-1.amazonaws.com
REMOTE_ADDR=54.205.153.63
DOCUMENT_ROOT=/var/www/html/paulbourke.org
REQUEST_SCHEME=http
CONTEXT_PREFIX=
CONTEXT_DOCUMENT_ROOT=/var/www/html/paulbourke.org
SERVER_ADMIN=root@localhost
SCRIPT_FILENAME=/var/www/html/paulbourke.org/oldstuff/wwwknow/index.html
REMOTE_PORT=41545
GATEWAY_INTERFACE=CGI/1.1
SERVER_PROTOCOL=HTTP/1.0
REQUEST_METHOD=GET
QUERY_STRING=
REQUEST_URI=/oldstuff/wwwknow/
SCRIPT_NAME=/oldstuff/wwwknow/index.html
DATE_LOCAL=Thursday, 19-Jan-2017 14:24:58 EST
DATE_GMT=Thursday, 19-Jan-2017 19:24:58 GMT
LAST_MODIFIED=Sunday, 12-Jun-2016 22:08:31 EDT
DOCUMENT_URI=/oldstuff/wwwknow/index.html
USER_NAME=root
DOCUMENT_NAME=index.html