Search Results for "security"
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Showing 378 open source projects for "security"
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SoftEther VPN
Cross-platform multi-protocol VPN software
An open-source free cross-platform multi-protocol VPN program, as an academic project from University of Tsukuba, under the Apache License 2.0. The API Suite allows you to easily develop your original SoftEther VPN Server management application to control the VPN Server (e.g. creating users, adding Virtual Hubs, disconnecting a specified VPN sessions) from JavaScript, TypeScript, C# or other languages. SoftEther VPN ("SoftEther" means "Software Ethernet") is one of the world's most powerful... -
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VirtualBox
Virtualization software for x86_64 hardware
...This flexibility makes VirtualBox ideal for developers, testers, sysadmins, or hobbyists who need different OS environments, want to test software across systems, or need isolation for development, sandboxing, or security experiments. VirtualBox offers both a user-friendly GUI as well as a command-line interface and headless mode, making it useful for desktop usage as well as server or automated environments. -
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Osquery
SQL operating system instrumentation and monitoring framework
Osquery is an operating system instrumentation framework for Windows, OS X (macOS), Linux, and FreeBSD. The tools make low-level operating system analytics and monitoring both performant and intuitive. Osquery exposes an operating system as a high-performance relational database. This allows you to write SQL queries to explore operating system data. With osquery, SQL tables represent abstract concepts such as running processes, loaded kernel modules, open network connections, browser... -
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c-icap is an implementation of an ICAP server. It can be used with HTTP proxies that support the ICAP protocol such as the Squid 3.x HTTP proxy server to implement content adaptation/filtering services.
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RELIANOID
Network Load Balancer and Application Security
RELIANOID is an open core (Debian GNU/Linux based) Application Delivery Controller (ADC) with advanced load balancing features such as Network Load Balancer, Application Load Balancer with SSL offloading, Advance Network Configuration including Virtual Interfaces, VLANs, Bonding with link aggregation, IPv4/IPv6, advanced routing, stateless cluster, web GUI, JSON API and much more! Enterprise Edition Load Balancer is available with extra features such as global service load balancing (gslb), application security including web application firewall (WAF), blacklists, Realtime Blackhole Lists (DNSBL), DDoS protection, stateful clustering, SNMP monitoring, email and SNMP notifications, RBAC, VPN support, and the best Support directly from an expert Team. -
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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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Netdeep Secure Firewall
Next Generation Open Source Firewall
Netdeep Secure is a Linux distribution with focus on network security. Is a Next Generation Open Source Firewall, which provides virtually all perimeter security features that your company may need. It offers Web content filters, ensuring better performance of the network, allowing users to use the service efficiently and securely, providing a deep control of the use of the Web access service, blocking access to unwanted websites, Virus, Spam, Applications and intrusion attempts. ... -
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T50
Very fast network stress tool
the fatest network packet injector *WARNING*: Don't use versions prior to 5.8. There is a major bugs recently discovered and fixed in this release. *WARNING*: The GitHub account containing the T50 project was deleted permanently. The new repository (with all commits, comments, "merge requests", ...) is already available at GitLab: https://gitlab.com/fredericopissarra/t50 *WARNING*: All older releases, except 5.7.* were DELETED. 5.4.1 and below are Nelson's original source code. -
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Cntlm is an NTLM / NTLMv2 authenticating HTTP/1.1 proxy. It caches auth'd connections for reuse, offers TCP/IP tunneling (port forwarding) thru parent proxy and much much more. It's in C, very fast and resource-efficient. Go to http://cntlm.sf.net/
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OmniEdge
Bringing intranet on the internet with Zero-Config Mesh VPNS.
OmniEdge is an Open source p2p layer 2 , zero-config mesh VPN infrastructure, a traditional VPN, AWS VPC, Ngrok, DDNS alternative. No central server, easy to scale with less maintenance. What happens in intranet, stays in in intranet. -
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CacheGuard Gateway
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
Securing your network should not require an enterprise budget. CacheGuard is a free open-source network security appliance for startups and growing businesses that need serious protection without the complexity. Install CacheGuard-OS on any x86 machine or VM and get a complete security gateway in under an hour. No plug-ins, no compatibility issues. Everything works out of the box. CacheGuard-OS is not an app, it IS the OS. A fully custom network appliance operating system built from scratch over 20 years, now fully open source. ... -
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tcpreplay
edit and replay captured network traffic
tcpreplay is a suite of tools to edit and replay captured network traffic. -
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ngrep strives to provide most of GNU grep's common features,applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular expressions to match against data payloads of packets. SUPPORT/REPORTING BUGS: please use https://github.com/jpr5/ngrep/issues Thank you!
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LibNetBlock - A Network Blocking Library
A library for blocking access to network on-the-fly
LibNetBlock is a library that on-the-fly (by preloading) prevents a program under its control to use the network, to help to keep the user's privacy, prevent data leakage and virus spreading. You can think of LibNetBlock as a simple layer-7 (L7) firewall that simply blocks the network access for the program it controls. There is NO NEED to rebuild your software, because LibNetBlock is a pre-loadable library, meaning you just need to RUN the software with LibNetBlock loaded. LibNetBlock is... -
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MaraDNS is a fully open-sourced DNS server that strives to be secure. It is written in C (no C++) and is suitable for embedded systems.
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OpenXDAS is an open source implementation of the Open Group's Distributed Auditing Service (XDAS) specification. OpenXDAS provides a complete implementation of the XDAS specification API, including client-side instrumentation and filtering.
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WendzelNNTPd
A free Usenet server with SQL backend and RBAC.
The WendzelNNTPd is a IPv6-ready NNTP usenet-server with the main goal to be as easy to use as possible. It is portable (Linux/*BSD/*nix), supports AUTHINFO authentication, contains ACL as well as role based ACL and supports invisible newsgroups. It currently supports MySQL and SQLite backends. -
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OpenVPN
Robust and flexible VPN network tunnelling
OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single TCP/UDP port. Discussion forums and project wiki can be found here: https://forums.openvpn.net/ http://community.openvpn.net/openvpn -
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MailCleaner
Anti Spam SMTP Gateway
MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project https://github.com/SpamTagger [antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready. MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet. It... -
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Circumference is a server-client-style implementation to supplement the WebAuth Diameter subprotocol, complete with an extensible Diameter server and base library. Diameter is a peer-to-peer authentication protocol (RFC 6733).
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Kevux Firewall
Provide basic firewall program for Kevux using FLL.
The Kevux Firewall program is one of the oldest Featureless Linux Library (FLL) programs. This project now exists outside of the FLL as its own distinct project and repository. -
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Poptop is an open source implementation of a PPTP server. Running under x86 or embedded Motorola ColdFire architectures Poptop provides full interoperability with the Microsoft PPTP VPN client.
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ION-DTN (mirror)
Delay-Tolerant Networking suitable for spacecraft and ground
11/21/2025 * Official distribution sites for ION and ION-core have moved to GitHub: https://github.com/nasa-jpl/ION-DTN https://github.com/nasa-jpl/ion-core * ION documentation: https://ion-dtn.readthedocs.io/ Download link for new releases (after ION 4.1.2) is posted below. Please report all issues to GitHub. Submissions to this site will not be monitored. ============================= ION development is managed by the Jet Propulsion Lab. The Interplanetary Overlay... -
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Web-based Firewall Log Analyzer
Firewall log analyzer
Flexible web-based firewall log analyzer, supporting netfilter and ipfilter, ipfw, ipchains, cisco routers and Windows XP system logs, and mysql or postgresql database logs using the iptables ULOG or NFLOG target of netfilter others mapped to the ulogd format with a view. Fully supports IPv6 for database logs, and netfilter and ipfilter system file logs. Also supports Maxmind's GeoIP version 2 location databases. For Linux, FreeBSD, OpenBSD, Solaris, OSX,etc. -
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Syslogd2
High capacity syslog data collection, filtering, and management.
Syslogd2 is a syslog daemon that has been completely re-imagined specifically for use in network environments. It is multi-threaded, scalable and versatile with features designed for both network and host managers. Each Syslogd2 binary is customized from a set of over 20 features at compile-time. It can support input from text files, named-pipes, Linux kernel and user-defined Linux and (both IPv4 and IPv6) IP sockets (both UDP and TCP). It provides a pre-loadable name-cache that can...
