Security Systems

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iWatch is a real-time filesystem monitoring program. It is a tool for detecting changes on filesystem and report it in real time. It uses a simple configuration file in XML format and is based on inotify, a file change notification system in the Linux kernel. ... (show more)

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This is an easy to setup antileech cgi script. This Antileech script only has 5 easy variables to setup: Location of your data directory, the url to antileech.cgi, the url to your website, the name of your website, and your password. It also allows you to add as many sites as you want to the leech list.... (show more)

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This script uses a custom 404 page that logs the IP address and amount of times it has loaded the 404_error.pl .If someone loads the 404 page 3 times in succession their IP address is logged to the banned_ip_list.log file. Every 60 seconds build_deny_list.pl opens the banned_ip_list.log file and gets the IP address to block. It then generates some C# code, adds that banned IP to the C sharp code, compiles the C code into an executable binary. This C sharp program is actually what adds the IP to the IIS deny list. After the build_deny_list.pl generates and executes the binary, it deletes the original source and executable file. ... (show more)

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Displays an ascii art image of a random sequence of letters/digits and asks the visitor to type the sequence in a field provided. If the typed sequence is the same as in the image, the original form script (action) is invoked. Otherwise, the visitor is asked to go back and correct what he/she typed before. VVS requires Perl with the CGI class. It works for any form script written in Perl, independently of whether the script uses CGI or cgi-lib.pl or etc. It also preserves values of arbitrary variables of the environment for use in the original form script.... (show more)

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This script was written to help stop automated brute force attacks against your website. Are you tired of seeing www.yourdomain.com... ...cmd.exe in your log files? This script uses a custom 404 page that logs the IP address of the person making the 404 requests and after so many requests it adds that IP to the IIS servers deny list. There is some HOWTO information with the download...Be sure to read the README.html file! This script works against requests made via browser, wget, raw HTTP...maybe more. I updated this script to use a safe.log. You can add Ip's you dont want to ban in the safe log. IP's you might not want to ban are those used by Googlebot or Slurp (yahoo bot).... (show more)

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Find the most common way of hacking and be notified by email/pager around the clock. Most hackers use /tmp to hack linux servers by writing some file in /tmp directory and call it remotely to play around in your server. If you are offering shared-hosting or web hosting services on your server, then you are making this much easier for hackers to find access to your /tmp directory. There are many ways of closing or limiting their access to this directory such as running PHP with suEXEC Support. I assume you already know all of those and you have a very secure /tmp directory. However, often hackers find newer ways of accessing this directory. Therefore, it is necessary to check this directory often to make sure nothing is going on without you knowing it. Following script was written to check /tmp directory or any other directory and notify the admin if any un-authorized file exists. To keep this example simple, we are looking into each file and look for different keywords such as "perl". Keep in mind that this script can only detect files with source, not executables. This is still very useful as most hackers use wget method to write something into this directory. You could setup a cron-job to run this every few minutes and have it email you as soon as it finds something. Script will also create a log file of what it finds.... (show more)

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Do you have pages that you want to keep visitors off such as login and security pages? Do you want to know as soon as a visitor lands in a particular page because you're just curious? Well, PerlSpy is a script that sends you an email alert the moment someone visits any "marked" page with all the info you need to know about that visitor such as IP, Host DNS, exact time of visit, the referring URL, the browser, OS, ...etc. You can easily "mark" those pages by inserting one line of HTML in them and the script does the rest. PerlSpy is not really a security system, it's not a counter either; it's something in between. Its applications are countless and depend only on your imagination and curiosity. Just don't flood yourself with emails if you're expecting millions of visitors :)... (show more)

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BAD HARVEST is a form-mail CGI script designed to be called from links similar to "mailto:...". It helps you to hide email addresses from "harvesters" (automated email-address collectors) while still providing a convenient way for your visitors to contact you. It does not rely on JavaScript or PHP and works in every browser down to text browsers.... (show more)

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Check the location of input forms. Prevent a hacker from submitting forms from outside your domain/server.

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Selectively Serves HTML based on the CLIENT HOST INFORMATION. Great for protecting your html that you worked so hard on to get your site at the top of the search engines. Serves one page to the search robots and another to surfers.

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Unicoder V1.1. is a perl script that allows you with a single click to convert email addresses to a Unicode mix javascript that makes your email address 100% invisible to any type of email collecting spam robots. The generated code is compatible with html and pages generated by other scripts. Copy and past the code any were inside your html pages and your guaranteed of not receiving spam for having your email address listed on your site. - Try the free demo - Installation takes only 2 minutes.... (show more)

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So you wanna know who's been visiting your webpage, or maybe you have an order form that want to deter fraud? This script logs IP addresses and exact times of visitors to any page you place the small ssi or javascript tag on and displays the IP on the page itself. Another simple security feature to deter credit card fraud on order form! ... (show more)

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PeerProtect is an addon for Jay's firewall that generates a file which contains all IP addresses from the RIAA and MPAA, etc. and will protect peer-to-peer programs from them

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This PerlScript will block visitors from accessing a certain page based on their IP address or an entire IP range. You can add as many IPs as you wish with little code modification.

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This is an advance version of our popular Spider Trap script. E-mail address scavengers and other rogue bots that follow the hidden spider trap links will be automatically banned via a script activated .htaccess rewrite and the Webmaster will be notified by E-mail with full details of the transgression. Zip file download includes a .htaccess file, the banbot-trap.pl script and a 1 x 1 pixel transparent GIF file.... (show more)

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This software makes use of a very special Apache handler that allows it to monitor every user that enters your members area as well as every file request made from your members area all in real time. This script replaces Browser based Basic Access validation with a more secure version of user tracking and validation of its own. Users login via a form instead of the browser pop-up box. The script has three main functions. 1. Prevent password theft. It is impossible to run a brute force password attack against your members area. 2. Prevents password abuse. Ensures that only one person is using a given username. 3. Prevents bandwidth abuse and robot downloading of your members area overnight. No other script like it on the market. Tons of features and a user interface.... (show more)

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Our Hacker Honeypot is key to sweeping your server clean. Our Exploit Detection Library will prove whether you have found your security holes, and whether they are now closed. You get instant email notification of an alleged security violation, so that your admin can nail the problem while it's in progress. Our Hacker Honeypot library includes an SSI page counter like you see at the bottom of this page. The SSI counter quietly logs everything known about the surfer every time the page is loaded. Add the counter to an unlimited number of pages on your server.... (show more)

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You control who can and who can not enter your website. Email harvester robots, evil file download tools are automatically blocked. No metter how many IP’s they use. 99% NO more SPAM and file THIEVES! Detailed email notification on search engine visits and evil robots being blocked. No need for SSI or convert email addresses. Works automatically and invisible. High advanced admin section to deny, allow or block robots and users.... (show more)

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This perl script will automatically download the Level 1 or Level 2 listings from spews.org (Spam Prevention Early Warning System) and will parse the listing, remove duplicates, sort the list, and then build firewall rulesets for iptables, ipchains, pf/ipf, Sun SunScreen v3.1 & v3.2, and Cisco equipment.... (show more)

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Stop people from linking to your media files. Easy to install and configure. Hide media directories, alias directories, alias media file extensions.