如何阻止攻擊,SQL注入,垃圾郵件,用戶代理文件等 |
發(fā)布時(shí)間: 2012/9/15 17:40:15 |
本文介紹了如何可以阻止最常見的漏洞,SQL注入,用戶代理文件,垃圾郵件和黑客使用帶寬粉碎機(jī)從后vhosts和一些簡單的配置指令。此配置還遠(yuǎn)遠(yuǎn)沒有完成,但它是一個(gè)很好的起點(diǎn)。你要注意你的日志的企圖嘗試突破,并試圖修改/完整的規(guī)則集。
修改后vhosts
我在這里使用的規(guī)則已被插入在每個(gè)虛擬主機(jī)技術(shù)(在后服務(wù)器{ }容器),你想使用它。不幸的是,不能用在全球范圍內(nèi)由于集指令是不允許的斷點(diǎn)續(xù)傳{ }容器。
erver {
[...]
## Block SQL injections
set $block_sql_injections 0;
if ($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;
}
## Block file injections
set $block_file_injections 0;
if ($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 exploits
set $block_common_exploits 0;
if ($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 spam
set $block_spam 0;
if ($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 agents
set $block_user_agents 0;
# Don't disable wget if you need it to run cron jobs!
#if ($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;
}
[...]
}
每當(dāng)一個(gè)規(guī)則匹配的要求,403個(gè)錯(cuò)誤返回給客戶端。我已經(jīng)評(píng)論了wget規(guī)則在這里,因?yàn)檫@也將阻止計(jì)劃工作,利用wget是很常見的現(xiàn)代醫(yī)療應(yīng)用。如果你的應(yīng)用程序不使用wget,您可以取消,規(guī)則等。
別忘了重裝后:
/etc/init.d/nginx reload 本文出自:億恩科技【1tcdy.com】 服務(wù)器租用/服務(wù)器托管中國五強(qiáng)!虛擬主機(jī)域名注冊(cè)頂級(jí)提供商!15年品質(zhì)保障!--億恩科技[ENKJ.COM] |