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Showing 24 open source projects for "block"
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CrowdSec
Firewall able to analyze visitor behavior & provide adapted response
...It stacks on Fail2ban's philosophy, but uses Grok patterns & YAML grammar to analyse logs, a modern decoupled approach (detect here, remedy there) for Cloud/Containers/VM based infrastructures. Once detected you can remedy threats with various bouncers (block, 403, Captchas, etc.) and blocked IPs are shared among all users to further improve their security. Crowdsec is an open-source, lightweight software, detecting peers with aggressive behaviors. -
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OpenSnitch
OpenSnitch is a GNU/Linux port of the Little Snitch firewall
OpenSnitch is a GNU/Linux port of the Little Snitch firewall. You can launch the GUI from the icon or from the system menu. The daemon will start intercepting connections, prompting you to allow or deny them. If you don't apply an action, after 15 seconds (configurable) it'll apply the default action configured. When you open the GUI, you'll see all the connections and processes that the daemon has intercepted. Double click on a row to view the details of a process, rule, host or user. Once... -
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Privoxy
HTTP proxy to block ads and customize webpages
Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks. -
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SSHGuard
Intelligently block brute-force attacks by aggregating system logs
SSHGuard protects hosts from brute-force attacks against SSH and other services. It aggregates system logs and blocks repeat offenders using several firewall backends, including iptables, ipfw, and pf. -
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lua-resty-waf
High-performance WAF built on the OpenResty stack
...It inspects requests and responses during NGINX phases, applying rule logic and anomaly scoring to detect patterns like SQL injection, cross-site scripting, and protocol abuse. Rules are organized into policies with configurable actions—block, log, or allow—and can leverage shared dictionaries for counters, rate limits, and caching decisions. Because it runs inside the NGINX event loop, it scales with the web tier and avoids the latency of external proxies. Operators can extend it with custom Lua code, integrate threat feeds, or adapt it to application-specific quirks without recompiling modules. ... -
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log2table
track log files, block intrusions, and much more
Log2table allows you to continuously monitor your logfiles. You can trigger actions when a specific message comes in your audited logfiles or when a specific number of occurences are present. -
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ipblock
Block or allow connections by country address blocks
Ipblock allows you to select which countries you allow or block connections to and from. -
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ipblocklist
download and convert ip block list
A small tool to help downloading the IP block lists from I-Blocklist for Transmission/uTorrent/Vuze/etc, or converting the list to IPSET format for a kernel level IP blocker. Similar scripts are populated already. This one is written in C. -
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SEConnector firewalling/routing gateway SECurity-System for Linux based on kernel 2.6 and iptables
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Addons for IOSEC - DoS HTTP Security
IOSec Addons are enhancements for web security and crawler detection
...Added Facebook Bot Support for "Facebot/1.0". Add this code to your website to prevent unauthorized stealing of your valuable content & block malicious bots from crawling your site. -
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tor-dropper
Block incoming traffic from Tor network with IPTABLES
Block incoming traffic from Tor network with IPTABLES. -
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iptadmin
iptables web interface
...It works as standalone https daemon, and allows to authenticate with system accounts using pam. Iptadmin can't ruin iptables configuration files by design. It doesn't let user to block network access to the interface. -
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mikrotik-ips-ids
IDS + IPS for RouterOS (mikrotik)
This project reads logs from your mikrotik firewall and creates an address list with detected attackers -
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HTTP Anti Flood/DoS Security Module
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks
This module provides attack surface reduction enhancements against the HTTP Flood Attacks at the web application level. Massive crawling/scanning tools, HTTP Flood tools can be detected and blocked by this module via htaccess, firewall or iptables, etc. (like mod_evasive) You can use this module by including "iosec.php" to any PHP file which wants to be protected. You can test module here: http://www.iosec.org/test.php (demo) Watch the Proof of Concept video:... -
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iplock
Easy to use tool to block unwanted network access.
The iplock tool is a simple iptables extension that allows you to run iptables commands that otherwise require root access in order to block and unblock IP addresses in your firewall. This is particularly useful if you have a webserver such as Apache2 running a scripting language such as PHP without root permissions. When you detect that a user is likely a hacker (i.e. tries to access a folder named wp-admin on a non-Wordpress website) then you can use iplock <his-IP-address> to block him. ... -
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yaib-daemon
IP block list - can manage many thousands of IP addresses
yaib-daemon is a resource-friendly blacklist daemon, designed to block many thousands of IP addresses. These blacklists are stored in hash tables. So only one or two iptables rules are needed. -
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A package of scripts to watch for snort alerts, change / create firewall rules to block high priority alerts, and record recent blocks. It will increase block times based on previously recorded blocks
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Running as a daemon it monitors /var/log/messages(configurable) for bastille iptables and PSAD scan alerts with a max threshold (configurable) It will block ip on iptables instantly and send abuse email out. Requires a few perl modules (tries to install)
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This is a graphical interface for managing your peerguardian/linux block lists under linux. The main objective of this project is to allow people to use moblock without using the console.
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brutesshd is an application written in c/php in order to prevent bruteforce attacks through ssh. Brutesshd uses iptables/pfctl tools to block this type of attacks
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CRYPT extension for Netfilter/Iptables allows you to create an encrypted communication using stream and block ciphers. It also authenticates the packets.
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A daemon that creates realtime dynamic, expirable iptables rules to block/drop IP addresses attempting brute-force breakin attacks on a linux host via ssh or other mechanism. Highly customizable and extensible.
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The Master-Slave project is directly related to the Snort IDS to dynamically create rules into iptables firewall. It could send the attacker IP address to others machines into the circuit that will block the IP address before any attack from the intruder
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Dave's Naughty Stuff Blocker. This is an open source solution to allow administrators to filter and redirect selected "inappropriate" sites based on a list of specific sites and/or strings.
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