Free openbsd software for linux

openbsd-iso project is a set of scripts with which you can automatically download an FTP release and make OpenBSD ISO images out of it.

NSH is intended to handle configuration for interfaces, bridging, routing, packet filtering, NAT, and ISAKMP. It presents the user with a vaguely cisco-like interface.

It also gives the user access to system information and diagnostics. NSH replaces the userland commands which handle these functions, and talks directly to the OpenBSD kernel (with exceptions for pfctl, isakmpd, and dhcpd).

NSH is completely free, it only incorporates code with BSD-style licenses.

The current version fixes bugs from the last release and brings NSH up to speed for OpenBSD 3.7 and 3.7-current.

For the next major release, Im planning on some IPsec, OSPF, BGP, and DHCP functionality, and possibly ping and other functions. (Also, a rework of the CLI code might happen) The CLI is functional for information/diagnostics, and configuration of pf/nat/altq, interfaces, bridging, and routing.

OpenBSD Live-CD Firewall is an OpenBSD-based pf (packet filter) firewall, with DNS, squid, NAT, and a DHCP server (dnsmasq) for internal clients preconfigured. Settings and log files can be saved to a USB device.
Saved settings will be restored at the next reboot. Additional security related software is available on the CD (arpwatch, honeyd, ntop, portsentry, etc.)
Main features:
- runs without modifying the hard-drive
- external interface will be configured via DHCP - should work with a Cable Modem connection
- DHCP service for internal LAN
- caching DNS
- Squid Proxy
- NAT (masquerading)
- save your configuration and passwords to an USB mass-storage device (usb-pen drive) [ /backup/etc2usb ]
- If the USB device is connected at boot time these settings will be used.
- save all log files to an USB mass-storage device for future analysis [ /etc/log2usb ]
Enhancements:
- The Squid proxy server works now in transparent mode without further configuration.

OliveBSD is a LiveCD based on OpenBSD 3.8 with graphical environment and various softwares.
OliveBSD includes the following software:
- IceWM Window manager
- ROX-filer File manager
- SciTE Text Editor
- Mozilla Firefox Web browser
- Mozilla Thunderbird E-mail application suite
- Gimp Image Manipulation Program
- Gaim Multi-protocol instant messaging client (AIM, ICQ, MSN Messenger, Yahoo, IRC, Jabber, Gadu-Gadu, Novell GroupWise, and Zephyr networks)
- Xchat Irc client
- XMMS Multimedia player
- Abs Spreadsheet
- Xpdf PDF viewer
- Ghostview PostScript viewer
- Xtar Program for viewing and manipulating tar archives
- AxYftp Ftp client
- CD-Rchive CD creation software
- TightVNC viewer Client for remote desktop access

Openswan is an implementation of IPsec for the Linux operating system.
It provides IPSEC (IP Security, which is both encryption and authentication) kernel extensions and an IKE (Internet Key Exchange, keying and encrypted routing daemon), as well as various rc scripts and documentation.
It is known to interoperate with other IPSEC and IKE systems already deployed by other vendors such as OpenBSD, Cisco, and CheckPoint. It features Opportunistic Encryption, subnet extrusion, X.509 certificates, NAT Traversal support, XAUTH, and DNSSEC support.
Enhancements:
- Compile fixes for 2.6.16-2.6.18-rc2, a dpdaction=restart fix, and various miscellaneous fixes for ipcomp, nat-t, and rekeys.

polyBSD is a "multi"-purpose (hence "poly") framework for building embedded systems based on NetBSD.

Of the three major *BSD flavors, FreeBSD and OpenBSD are often in the spotlight.
FreeBSD is touted for its stability, while OpenBSD usually claims the title of
the most secure operatin system available.

However, the third flavor (NetBSD) is what many consider to be the unsung hero - it has features that rival those of both FreeBSD and OpenBSD however is not often seen in the news. NetBSD has arguably the cleanest code base of all open source operating systems this fact has unforseen effect on its overall features. The reason for
NetBSDs clean code is the its stated goal to run on as many hardware architecture
as possible. In order to do that, the team behind NetBSD has been forced to write
code that is portable and easy to debug.

Portable code is achieved by using mostly libraries and functions that are likely to compile and run well on most platforms. In addition, in order to be able to reliably port the code to over 40 different architecture, the code has to be well written so that a large group of people can look at and understand it well so they can modify it easily and port it to a new architecture. But how does that translate into stability and security touted by FreeBSD and OpenBSD respectively. Well, clean code usually translates directly into stability - one cant expect a messy code to perform well or be easy to debug.

Clean code also leads to improved security - security bugs are easy to spot and
correct. Also the portability of the code ensures that only standard libraries
and functions are used. However, those standard libarries and functions are the
ones that have been around longer, which means they have been well tested and are
likely to contain the fewest number of security bugs.

The one feature that FreeBSD had long been able to claim exclusively is that in
terms of performance it blows all other *BSD flavors out of the water when it
comes to the i386 architecture.

However, this crown was recently captured by NetBSD thanks to an extensive performance benchmarking, the results of which are referenced on the section "NetBSD tools" on this site. So to sum it all up, NetBSD is no longer simply the portability prodigy on the block. It is a fast, rock-solid and secure operating system that can successfully meet the demands of the modern enterprise. Thats the reason for it being used by the people behind this project to build some tools that will hopefully be useful.

iogen is an I/O generator. iogen forks child processes that each run a mix of reads and writes. The idea is to generate heavily fragmented files to make the hardware suffer as much as possible.
This tool has been used to test filesystems, drivers, firmware, and hardware devices. It is by no means meant as a performance measuring tool since it tries to recreate the worst case scenario I/O.
This code was developed and tested on OpenBSD 3.8-current Dec 6 2005. This code should be POSIX compliant and therefore should compile on all well behaving UNIXi. If you are inclined to port this to another OS send me a diff and if it is good Ill merge it with the actual code.
Please note that I will not generate additional makefiles besides the example in the current version. The official Makefile is part of the OpenBSD ports tree and is non-portable. I will publish, ONLY under a BSD license, makefiles and diffs that enable iogen to run on other OSs on this website.
Enhancements:
- The Linux makefile was fixed.