jengelh

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arptables is an administrative utility for managing the ARP filter table in the Linux kernel.

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Asteroids3D is an OpenGL-based first-person game of blowing up asteroids. Its simple code base also provides a way to learn OpenGL with the help of external tutorials like those from NeHe.

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ccgfs is a transport-agnostic network filesystem using FUSE. Transport is arranged by helper programs, such as SSH. The PUSH transport mode acts like a "reverse" NFS and makes it possible to export a filesystem from a firewalled host without defeating the security model.

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Circumference is a server-client-style implementation of a WebAuth client and server to supplement the WebAuth Diameter subprotocol, complete with an extensible Diameter server and base library. Diameter is a peer-to-peer authentication protocol as specified in RFC 6733.

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conntrack-tools is a set of userspace tools for Linux that allow system administrators to interact with the Connection Tracking System, the module which provides stateful packet inspection for iptables. It includes the userspace daemon conntrackd and the commandline interface conntrack.

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dwarves is a set of tools to inspect the DWARF debugging information inserted in ELF binaries by compilers such as GCC, and which are used by well-known debuggers such as GDB and more recent ones such as systemtap. With pahole, the struct packing and cacheline efficiency can be inspected.

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ebtables program is a filtering tool for a bridging firewall. The filtering is focused on the Link Layer Ethernet frame fields. Apart from filtering, it also gives the ability to alter Ethernet MAC addresses and implement a brouter.

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ipset allows administration of sets of IP addresses/networks, ports, MAC addresses, and interfaces, which are stored in hash or bitmap data structures. These can then be used in conjunction with iptables to do fast presence lookups.

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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.

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The j.eng kernel patchset contains a number of accumulated fixes as well as a number of new enhancements to the Linux kernel.