分享纯　nginx 防御代码　nginx safe.conf

if ($request_uri ~* "([+|(%20)]and[+|(%20)])|([+|(%20)]or[+|(%20)])|([+|(%20)]select[+|(%20)])|([+|(%20)]exec[+|(%20)])|([+|(%20)]union[+|(%20)])") {
	return 403;
}
if ($request_uri ~* "(cost\()|(concat\()") {
	return 404;
}
if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {
	return 404;
}
if ($query_string ~ "GLOBALS(=|[|%[0-9A-Z]{ 0,2})") {
	return 404;
}
if ($query_string ~ "_REQUEST(=|[|%[0-9A-Z]{ 0,2})") {
	return 404;
}
if ($query_string ~ "proc/self/environ") {
	return 404;
}
if ($query_string ~ "mosConfig_[a-zA-Z_]{ 1,21}(=|%3D)") {
	return 404;
}
if ($query_string ~ "base64_(en|de)code(.*)") {
	return 404;
}
if ($http_user_agent ~ "Python-urllib") {
	return 404;
}


if ($query_string ~ "union.*select.*\(")
{
	set $block_sql_injections 1;
}
if ($query_string ~ "union.*all.*select.*")
{ set $block_sql_injections 1; }
if ($query_string ~ "concat.*\(")
{  set $block_sql_injections 1; }
if ($block_sql_injections = 1)
{  return 403; }

if ($query_string ~ "[a-zA-Z0-9_]=http://")
{  set $block_file_injections 1; }
if ($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+")
{  set $block_file_injections 1; }
if ($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+")
{  set $block_file_injections 1; }
if ($block_file_injections = 1)
{  return 403; }
## Block common exploitsset $block_common_exploits 0;
if ($query_string ~ "(<|%3C).*script.*(>|%3E)")
{  set $block_common_exploits 1; }
if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{  0,2 })")
{  set $block_common_exploits 1; }
if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{  0,2 })")
{  set $block_common_exploits 1; }
if ($query_string ~ "proc/self/environ")
{  set $block_common_exploits 1; }
if ($query_string ~ "mosConfig_[a-zA-Z_]{  1,21 }(=|\%3D)")
{  set $block_common_exploits 1; }
if ($query_string ~ "base64_(en|de)code\(.*\)")
{  set $block_common_exploits 1; }
if ($block_common_exploits = 1)
{  return 403; }
## Block spamset $block_spam 0;
if ($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b")
{  set $block_spam 1; }
if ($query_string ~ "\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b")
{  set $block_spam 1; }
if ($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b")
{  set $block_spam 1; }
if ($query_string ~ "\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b")
{  set $block_spam 1; }
if ($block_spam = 1)
{  return 403; }
## Block user agentsset $block_user_agents 0;# Don't disable wget if you need it to run cron jobs!#
#if ($http_user_agent ~ "Wget")
# {  # set $block_user_agents 1;# }
# Disable Akeeba Remote Control 2.5 and earlier
if ($http_user_agent ~ "Indy Library")
{  set $block_user_agents 1; }
# Common bandwidth hoggers and hacking tools.
if ($http_user_agent ~ "libwww-perl")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "GetRight")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "GetWeb!")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "Go!Zilla")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "Download Demon")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "Go-Ahead-Got-It")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "TurnitinBot")
{  set $block_user_agents 1; }
if ($http_user_agent ~ "GrabNet")
{  set $block_user_agents 1; }
if ($block_user_agents = 1)
{  return 403; }