Ekaanbj: /* POST logging mod_security */

2019-01-24T13:52:46Z

POST logging mod_security

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=Documentation=

http://httpd.apache.org/docs/2.3/mod/core.html

=proxy=

The idea is to receive all incoming requests on a single HTTP server. This server, using mod_proxy and mod_rewrite, will route requests to X backend servers, acting as a reverse proxy. This can be done very simply once mod_proxy is installed, by adding lines such as:

RewriteEngine on
RewriteRule ^t(.*)$ http://somewhere.com/ [P,L]

This would route all requests starting with a t to the site somewhere.com and present its contents to the user as if delivered by the front server.
=who is hammering my apache?=
sudo perl -e '$ip{(split)[0]}++ while <>; print map "$_ : $ip{$_}\n", sort {$ip{$b} <=> $ip{$a}} keys %ip' /var/log/httpd/halfface.se.access.log
=POST logging mod_security=
yum install mod_security
/etc/httpd/conf.d/mod_security.conf.bak3
LoadModule security2_module modules/mod_security2.so
<IfModule !mod_unique_id.c>
LoadModule unique_id_module modules/mod_unique_id.so
</IfModule>
<IfModule mod_security2.c>
SecRuleEngine On
SecAuditEngine on
SecAuditLog /var/log/httpd/modsec_audit.log
SecRequestBodyAccess on
SecResponseBodyAccess on
SecUploadKeepFiles On
SecUploadDir /var/log/httpd/files
SecAuditLogParts ABCEIFGHZ
SecDefaultAction "nolog,noauditlog,allow,phase:2"
SecRule REQUEST_METHOD "POST" "id:1000,phase:2,ctl:auditEngine=On,nolog,pass"
</IfModule>

=POST logging mod_dumpio=
/etc/httpd/conf.d/mod_dumpio.conf.bak
LoadModule dumpio_module modules/mod_dumpio.so
<IfModule dumpio_module>
DumpIOInput On
DumpIOOutput On
# DumpIOLogLevel debug
LogLevel debug
</IfModule>

=apachectl=
Verify apache config file.
apachectl -S -f /etc/httpd/conf/httpd.conf

=Is module loaded=
apachectl -t -D DUMP_MODULES 2>&1 | grep -i dumpio
=logging=
Format examples. Both mean same thing.
# CustomLog with format nickname
LogFormat "%h %l %u %t \"%r\" %>s %b" common
CustomLog "logs/access_log" common

# CustomLog with explicit format string
CustomLog "logs/access_log" "%h %l %u %t \"%r\" %>s %b"
One line explained.
LogFormat "%{X-Forwarded-For}i %h %u %t \"%r\" %>s %b %D %P %X \"%{Referer}i\" \"%{User-Agent}i\"" combined
CustomLog logs/api-access_log combined
Example
146.192.224.227, 10.199.85.25 10.199.85.25 - [22/Sep/2018:00:47:23 +0000] "GET /blabla. HTTP/1.1" 200 6008 343783 13792 - "-" "curl/7.38.0"
X-Forwarded for, Remote hostname user Time "First line of request" final_status size_response time_serve_millis Process Connection_status "Referer" "user_agent"
Variables described.
%{X-Forwared-For}i=The contents of X-Forwared-For: header line
%h=Remote hostname.
%u=Remote user
%t=Time the request was received
%r=First line of request
%>s=final status.
%b=Size of response in bytes
%D=The time taken to serve the request, in microseconds.
%P=The process ID of the child that serviced the request.
%X Connection status when response is completed:
X=Connection aborted before the response completed.
+=Connection may be kept alive after the response is sent.
-=Connection will be closed after the response is sent.
%{Referer}i=The contents of User-Agent: header line
%{User-Agent}i=The contents of User-Agent: header line

[[Category:Applications]]
[[Category:Unix]]
[[Category:Web]]

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Ekaanbj: /* POST logging mod_security */