OpenBSD项目提供了一份免费、多平台的、基于4.4
BSD的UNIX操作系统。我们的成就在于强调其可移植性、标准化、正确性、安全性以及集成的密码应用技术。OpenBSD支持大多数SVR4（如
Solaris）程序的二进制仿真，也支持FreeBSD、Linux、BSD/OS、SunOS和HP-UX程序。OpenBSD可从我们的FTP站点
免费获得，也可以通过并不昂贵的三CD套装获得。
Theo de Raadt has announced the release of OpenBSD 4.9, a BSD-based operating system specialising in high-security solutions through thorough code review. What's new? "OpenBSD
amd64 and i386 - enabled NTFS by default (read-only) on GENERIC
kernels; enabled the vmt driver by default for VMware tools support as a
guest; SMP kernels can now boot on machines with up to 64 cores;
maximum allocation size for i386 bumped to 2 GB; handle >16 disks
when searching for kernel boot device; added support for AES-NI
instructions found in recent Intel processors; further improvements in
suspend and resume; processes are now switched to TSS per CPU on the
amd64 platform, resulting in removal of the old limit of 4,000
processes. Improved hardware support, including: new vte driver for RDC
R6040 10/100 Ethernet devices...." Visit the OpenBSD 4.9 release page to read a detailed, technical overview of the product. Download: i386/install49.iso (215MB, SHA256), amd64/install49.iso (229MB, SHA256).
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