| Red Hat Enterprise Linux 4
14 February 2005
Red Hat Enterprise Linux 4 was released today. You can download your copy from our RHEL support page. This version includes numerous changes including the Linux 2.6 kernel and Security Enhanced Linux. You may want to familiarize yourself with these concepts before upgrading your RHEL 3 system. RHEL 4 supports numerous hardware platforms including:
* Intel x86-compatible (32bit)
* Intel Itanium (64bit)
* Advanced Micro Devices AMD64 (64bit) and Intel EM64T
* IBM POWER series (eServer iSeries and eServer pSeries)
* IBM Mainframe (eServer zSeries and S/390)
Desktop improvements include the Firefox web browser, Evolution 2.0 for email, calendaring, and contact management, OpenOffice.org office suite, GAIM instant messenger, The GIMP v.2 image tool, and Vino VNC. Red Hat Desktop 4 also includes RealPlayer 10 for SMIL, MP3, Flash, and RealAudio/RealVideo support.
Red Hat Enterprise Linux 4 is the first commercial product to include Security-Enhanced Linux (SELinux). SELinux is a Mandatory Access Control (MAC) security system for Linux, which allows finer-grain control over which users and what processes can access the filesystem. By default, a targeted policy is enabled. The default targeted policy affects the following daemons only: dhcpd, httpd, mysqld, named, nscd, ntpd, portmap, postgres, snmpd, squid, and syslogd.
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