zeek/doc/examples/httpmonitor/http_proxy_04.bro
Jon Siwek c46b018fdb Reorganize documentation index
Moved examples and use cases into a common subdir so those topics will
get grouped together in the main sidebar/TOC
2019-01-10 15:46:58 -06:00

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@load base/utils/site
@load base/frameworks/notice
redef Site::local_nets += { 192.168.0.0/16 };
module HTTP;
export {
redef enum Notice::Type += {
Open_Proxy
};
global success_status_codes: set[count] = {
200,
201,
202,
203,
204,
205,
206,
207,
208,
226,
304
};
}
event http_reply(c: connection, version: string, code: count, reason: string)
{
if ( Site::is_local_addr(c$id$resp_h) &&
/^[hH][tT][tT][pP]:/ in c$http$uri &&
c$http$status_code in HTTP::success_status_codes )
NOTICE([$note=HTTP::Open_Proxy,
$msg=fmt("A local server is acting as an open proxy: %s",
c$id$resp_h),
$conn=c,
$identifier=cat(c$id$resp_h),
$suppress_for=1day]);
}