Is there any way to block a particular ISP? Have a visitor that changes IP hourly, but the IP always resolves back to a hostname like dsl.yuns.sksk.uk .
I have CSF installed. Any way to block all visitors from dsl.yuns.sksk.uk?
I found this rule to detect URI's for the c99 shell.
#new kit SecFilterSelective REQUEST_URI "/c99shell.txt" SecFilterSelective REQUEST_URI "/c99.txt?" My problem is that the hackers are being more stealthy and calling the script some random name like .../myphpstuff.php. So the URI no longer helps detect it.
How could I detect "c99shell" in the actual file that apache servers? This assumes that the hacker was successfully in installing it.
I am getting a lot of GET requests from different IPs to 4 nonexistent PHP files on my server. Is there any way to block the requests to avoid the resources use of apache that these requests are generating?
I have installed mod_security but Im not sure about how the block rule should be.
The requests are going to images/log.php, images/log2.php, images/log3.php and images/logi.php of one of the sites hosted on the server, is there any way to block there requests for a specific domain or path?
I'm trying to use spamfilter to block mail from specific address, adding this e-mail to spamfilter in mail account settings, but it doesn't work. In logs I see:
spamc[13430]: skipped message, greater than max message size (256000 bytes).
I have been using mod_security 1.9.x since it first release on apache 1.3 and apache 2.0.x, rules are great and they work perfect with no issues at all with any php-mysql website. Do you recommend using mod_security 2.0 or 2.5 ? (I do know that 2.5 does not work with apache 1.3).
using mod_security, but I believe that I have it installed correctly with some rules that should be generating entries in the security audit log. No matter what I do, I can't seem to get mod_security to generate any sort of log entries.
I am using version 2.1.7. I compiled it with no problems. In my httpd.conf file, I have the following relevant lines:
LoadFile /usr/lib/libxml2.so LoadModule security2_module modules/mod_security2.so Include conf/modsecurity/*.conf
I don't think there are any problems here, as I know it is running directives from the configuration file I edited. This is the file I'm working with:
modsecurity_crs_10_config.conf
Here are the relevant lines from the config file:
SecRuleEngine On SecRequestBodyAccess On SecResponseBodyAccess On SecResponseBodyMimeType (null) text/html text/plain text/xml SecResponseBodyLimit 524288 SecDefaultAction "phase:2,auditlog,log,pass,status:500" SecAuditEngine On SecAuditLogType Serial SecAuditLog logs/modsec_audit.log SecAuditLogParts "ABIFHZ" SecRequestBodyInMemoryLimit 131072 SecDebugLog logs/modsec_debug.log SecDebugLogLevel 3
I know that the config file is being read because when I start apache, the log files (modsec_audit.log and modsec_debug.log) are created. The problem is that the files are empty and remain empty no matter what I do. I have even tried setting permissions on the files to 777.
Here are a couple of rules I created in an attempt to generate log entries:
I put these in the same config file mentioned above. As far as I understand, the first rule should examine the request body (which would include data in POST requests) for the word, "viagra". Since my default action is phase:2,auditlog,log,pass,status:500, such requests should end up in the audit log. However, when I use a form on my site to post the word "viagra", nothing is generated in the log file.
The second rule, as far as I understand, should generate a log entry any time the IP address 1.2.3.4 is sent in the request headers. Instead of 1.2.3.4, of course, I have put in my real IP address. However, when I visit my server and browse pages, nothing is logged. I assume that my requests should generate log entries since I match the IP address.
I am currently running a few small websites that use a CMS. Two are Dragonfly and one is Joomla.
I am getting sporadic errors with both systems that, upon research, seem to be related to Apache and the mod_security module. I am getting the following error:
Code: Not Acceptable
An appropriate representation of the requested resource /somefolder/index.php could not be found on this server.
Well, I'm no idiot (although some people may tend to disagree ) and after some searching, I found that this most likely points to an Apache error. Most solutions suggest to put the following in my .htacess file for the site:
Code: <IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule>
It was noted that "SecFilterScanPOST Off" may or not be necessary. I have added the above to the .htaccess for each site (all 3 sites are subdomains) and have also added it to the .htaccess that is in the root folder for the site. Nothing has worked.
So my question is, is it possible that my webhost can override my .htaacess settings with their own? This is the only explanation that I can think of. But of course, I am no expert, which is why I turn to you good folks for help once again.
I installed modsecurity from Addone module in Cpanel
When I try to apply phpshell woork good without a mistakes and I can do anything despite of the presence of protection modsecurity and disable_functions in php.ini.
Is there a particular settings add to the httpd.conf to prevent application phpshell or prevent upload it to the site?
I tried using mod_security and mod_filter together. However, when I try to filter js files, I noticed that certain pages stop working, especially those using ajax.
I have installed a new server with debian lenny 5, ISPConfig 3.0.1.1 and the newest mod_security and implemented the default rules.
I deactivated the rule detecting IP in pageheaders.
Then I got another problem. Some actions of ISPConfig are detected as "remote file access attempt", severity "critical", tag "web attack/file injection" data "/etc/"
detected by rule file crs_40 line 114, id 950005
question: how do I authorize ISPConfig and only ISPConfig to perform such requests on the server?
Trying to use an RBL with ModSecurity but this matches everything whether listed or not. SecRule REMOTE_ADDR "@rbl bb.barracudacentral.org" "log,deny,msg:'POST RBL Comment Spammer'"
What I would like to do is do an RBL lookup and any POST operations.
Any good secure rules for mod_security 2 that work well for shared servers?
Can someone share what rules you are using to secure your shared servers. Have tried a few different sets of rules, but a few customers always end up with errors and disabling it for their domain name doesn't sound like a safer option for them or the server.
