466 projects tagged "Firewalls"
Dante is a free implementation of the proxy protocols SOCKS version 4 and SOCKS version 5 (RFC 1928). It can be used as a firewall between networks, controlling outgoing traffic. The package consists of two parts: a socks server and a proxy client that supports socks, HTTP proxies, and UPnP. RFC 1961 (GSSAPI) is supported in both the client and the server. Commercial support is available.
The MiniUPnP project is a library and a daemon. The library is aimed to enable applications to use the capabilities of a UPnP Internet Gateway Device present on the network to forward ports. The daemon adds the UPnP Internet Gateway Device functionality to a NAT gateway running OpenBSD/NetBSD/FreeBSD/Solaris with PF/IPF or Linux 2.4.x/2.6.x with netfilter. One of its most interesting features is to enforce some permissions to allow or deny redirections, bringing some security to UPnP. Newer versions also support the NAT-PMP protocol from Apple.
CGIProxy is a Perl CGI script that acts as an Internet proxy. Through it, you can retrieve resources that may be inaccessible from your own machine. The user is kept as anonymous as possible from any servers. HTTP and FTP are supported, and optionally SSL. Common uses include censorship circumvention, VPN-like setups, anonymous proxies, personal proxies, and others. Options include text-only browsing (to save bandwidth), selective cookie and script removal, simple ad filtering, access restriction by server, encoded target URLs and cookies, configuration by end user, and much more (currently about 50 config options). Javascript and Flash are fully supported. An online demo is available.
iptables is built on top of netfilter, the packet alteration framework for Linux 2.4.x and 2.6.x. It is a major rewrite of its predecessor ipchains, and is used to control packet filtering, Network Address Translation (masquerading, portforwarding, transparent proxying), and special effects such as packet mangling.