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Virtual Distributed Ethernet is a user-mode virtual network (layer 2) infrastructure. It can be used for network simulations, joining multiple qemu instances together in a shared virtual network, or tunneling over the Internet. Physical hosts can be joined to the virtual network by means of the tap(4) driver.

tcpxtract is a tool for extracting files from network traffic based on file signatures. It supports 26 file formats and you can add new format by editing its config file. You can extract files from live network or pcap format capture file.

Kwooty is a .nzb usenet binary downloader for KDE4. It supports automatic file verifying/repairing with par2 files and automatic .rar archive extraction.

UCARP allows a couple of hosts to share common virtual IP addresses in order to provide automatic failover. It is a portable userland implementation of the secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD's alternative to the VRRP).

Siproxd is a proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections possible via a masquerading firewall. It allows SIP clients (like kphone, linphone) to work behind an IP masquerading firewall or router.

Sipsak is a small command line tool for developers and administrators of Session Initiation Protocol (SIP) applications. It can be used for some simple tests on SIP applications and services.

SMM++ is a MUD client with mapping functionality. You can just use mapping or just mudding or both together. It is based on itcl , which itself depends on tcl/tk . itcl, tcl/tk are free and standart programming languages. (If you need further information, where to get itcl and/or tcl/tk, please drop me a line.)

A tool to quickly ping N number of hosts to determine their reachability without flooding the network. fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping. Instead of trying one host until it timeouts or replies, fping will send out a ping packet and move on to the next host in a round-robin fashion. If a host replies, it is noted and removed from the list of hosts to check. If a host does not respond within a certain time limit and/or retry limit it will be considered unreachable. Unlike ping, fping is meant to be used in scripts and its output is easy to parse.

The vblade is the virtual EtherDrive (R) blade, a program that makes a seekable file available over an ethernet local area network (LAN) via the ATA over Ethernet (AoE) protocol. The seekable file is typically a block device like /dev/md0 but even regular files will work. Sparse files can be especially convenient. When vblade exports the block storage over AoE it becomes a storage target. Another host on the same LAN can access the storage if it has a compatible aoe kernel driver.

Virtual Distributed Ethernet is a user-mode virtual network (layer 2) infrastructure. It can be used for network simulations, joining multiple qemu instances together in a shared virtual network, or tunneling over the Internet. Physical hosts can be joined to the virtual network by means of the tap(4) driver.