Linux vendor Red Hat
version of its flagship enterprise product (Red Hat Enterprise Linux 4) at a
press event this evening in Boston. The announcement will likely be
accompanied by a companion announcement about a new desktop product release,
as well as a long list of partners that support the new version.
Red Hat Enterprise Linux 4 (RHEL), beta-tested under codename Nahant, enters a Linux landscape vastly different than when its
predecessor RHEL 3 was released in 2003.
At that time, there was arguably no
significantly backed enterprise distribution that effectively competed
against it in the North American market. That changed when Novell purchased
SUSE Linux, which now competes aggressively with Red Hat for market share.
Since RHEL 3 was released, Red Hat also terminated its Red Hat Linux product
line and has since launched its community Fedora Project version, which follows an aggressive release cycle and serves as the testing ground for
bleeding-edge technologies that eventually make their way into RHEL.
One such innovation is SELinux, which makes its official enterprise debut
in RHEL 4. SELinux was first introduced in Fedora Core 2 last February. SELinux was jointly
developed with the US National Security Agency (NSA) as part of an effort to
improve and harden the Linux operating system.
SELinux implements mandatory
access controls on the system to further improve security by helping to
prevent privilege elevation as a potential attack vector for hackers. SELinux
has undergone a significant amount of tweaking in the Fedora Project between
the Fedora Core 2 and 3 releases, which will likely be reflected in the quality
of SELinux as released in RHEL 4.
RHEL 4 also is the first official RHEL version to include the 2.6 kernel, though Red Hat had back-ported a good number of key 2.6 kernel
features into the original RHEL 3 release in 2003. Features from the Linux
2.6 kernel that would be of most value to commercial/enterprise customers
and ISVs were back-ported for use with RHEL 3’s Linux 2.4 kernel in order to
provide more stable features
The GNOME 2.8 desktop is also a new feature of the release, as are updated
versions of Evolution, RealPlayer and Acrobat Reader. In May, Red Hat launched its
enterprise desktop product, which was based on RHEL 3. An updated
product is expected to be part of the new release — this time based on RHEL
Though RHEL is on an 18-month release cycle, Red Hat has not left its
flagship product untouched throughout the course of that time period, having issued three significant updates.
The last update was released in September and introduced NX security. Update three also included Novell Ximian’s Exchange Connector for the Evolution groupware client. Exchange Connector allows Evolution (which is part of RHEL 4)to connect with Microsoft Exchange mail servers.
Among the partners expected to announce support for RHEL 4 is Oracle, which is hosting a joint Q&A with Red Hat tomorrow.
In other LinuxWorld news, Novell is expected to announce its cross-over Netware/Linux product, Open
Enterprise Server, at the show, as well. Novell released SUSE Linux Enterprise Server 9, which is the direct competitor to RHEL, in August.
Red Hat’s Fedora Project last issued its most recent update, Fedora Core 3, in November. Fedora Core 4 is expected to be
released in May.
French Linux vendor Mandrakesoft has also recently upped the
ante in the enterprise Linux stakes with its Corporate Enterprise Server
released last month.