Free gateway software for linux

KiweeCommerce software is a full-featured but easy to use e-Commerce solution for the MODx content management system.
Main features:
- Modular payment gateway architecture, which currently supports Paypal, Google Checkout, and Authorize.Net.
- Product management tools that auto-create product page stubs
- Integrates tightly with MODx - provides configuration menus in the CMS Manager, shares MODxs database, etc.
- Very powerful item option management
- Support for integration with external applications, such as accounting systems
- AJAX-driven configuration interface makes administration fast and intuitive

Untangle Gateway Platform is a Linux-based network gateway with pluggable modules for network applications like spam blocking, Web filtering, anti-virus, anti-spyware, intrusion prevention, VPN, SSL VPN, firewall, and more.
Enhancements:
- Bugfixes from 5.0.0-beta; this release is stable.

sipX is a next generation IP PBX solution offering rich functionality combined with ease of use, installation, and administration. sipX is entirely based on the Session Initiation Protocol (SIP) and significant attention is paid to standards compliance and interoperability.
It combines all common calling features, XML-based SIP call routing, Web-based configuration, and integrated management and configuration of the PBX and attached phones and gateways.
It is a modular server-based solution that does not require any additional hardware, as it interoperates with any SIP compliant gateway, phone, or application.
Main features:
- Native SIP IP PBX Solution
- Voicemail
- Multiple auto-attendants
- Presence
- SIP call routing
- Web based management
- Scalable architecture

Endian Firewall is a "turn-key" linux security distribution based on IPCop that turns every system into a full featured security appliance. Endian Firewall has been designed with "usability in mind" and is very easy to install, use and mange, without loosing its flexibility.
The features include a stateful packet inspection firewall, application-level proxies for variuos protocols (HTTP, POP3, SMTP) with antivirus support, virus and spamfiltering for email traffic (POP and SMTP), content filtering of Web traffic and a "hassle free" VPN solution (based on OpenVPN). The main advantage of Endian Firewall is that it is a pure "Open Source" solution that is commercially supported by Endian.
Main features:
Based Module:
- Firewall (statefull inspection)
- Outgoing Firewall
- IPSec Gateway to gateway VPN
- IPSec Remote client to gateway VPN (roadwarrior)
- NAT
- Multi-IP address support (aliases)
- Dynamic DNS
- DMZ support
- HTTPS Web Interface
- Detailed network traffic graphs
- View currently active connections
- Event log management
- Log redirection to external server
- Server DHCP
- Server NTP
- Traffic Shaping / QoS
- Transparent POP3 antivirus/antispam proxy
- Transparent HTTP proxy
- Web Proxy with local users, windows domain, samba, LDAP, radius server management
- Intrusion Detection System
- ADSL modem support
- Configuration backup and restore
- Remote update
Advanced Antivirus Module:
- HTTP Antivirus
- Endian Security Tools for Windows Desktop
- Transparent SMTP antivirus/antispam proxy
VPN Gateway Module:
- Gateway to gateway VPN with OpenVPN (http://openvpn.net/)
- Remote client to gateway VPN (roadwarrior) with OpenVPN (http://openvpn.net/)
- Bridged and Routed VPN mode
- Endian Client VPN ? Windows, Linux, MacOSX
Web Content Filter Module:
- URL filter
- Web content analysis/filter
- Whitelists and blacklists management
- Web surfing time limits
Enhancements:
- SATA support is now again working
- A wizard after installation asks to set the passwords (root, admin)
- Added possibility to restore a backup directly after installation
- Fix for blocking incoming connections coming in through the VPN [#210]

sipscreen project is a Linux iptables QUEUE target handler written in perl for screening incoming SIP phone calls.

If you have a network configuration similar to mine, with a Vonage or other Voice-over-IP adapter located behind a Linux gateway, you may find sipscreen useful for programmatically accepting or rejecting inbound calls, based on the caller ID information, the time of day, or any other clever algorithm you can think of.

The GNU Gatekeeper is a free H.323 gatekeeper based on the OpenH323 project. You can use it to manage a Voice-over-IP network and let endpoints (e.g., Netmeeting) communicate through symbolic names.
GNU Gatekeeper also has an external interface for billing and other applications. It runs on a number of Unix versions (including Linux and Solaris) and Windows.
Enhancements:
- This release adds optional priorities for gateway prefixes, the new switch "AcceptNonNeighborLCF", limited H.225-to-Q.931 code mapping (see H225toQ931), and new RemoveH235Call and RemoveH460Call switches.

skipjackResponse project checks Skipjack Payment gateway Response.

The SkipjackResponse Check class checks and validates the response sent via POST methods by the Skipjack payment gateway. In account setup, you need to make sure you have set response file to custom filename.

What is SkipJack?

Skipjack is another payment gateway that accepts payments online. But this payment gateway accepts payment for business in USA only.

What does my class do!

skipjackResponse class check the response that skipjack server send via POST method.

NOTE: In the preference of Skipjack account you will have to set response files.