Chapter 2.RequirementsThese requirements must be met before installation. To install RHN Proxy Server version 3.6 or laterfrom RHN Satellite Server, the Satellite itself must be version 3.6 or later.2.1. Software RequirementsTo perform an installation, the following software components must be available:• Base operating system — RHN Proxy Server is supported with Red Hat Enterprise Linux AS 2.1Update 5 or later, Red Hat Enterprise Linux AS 3 Update 3 or later, or Red Hat Enterprise LinuxAS 4 only. The operating system can be installed from disc, local ISO image, kickstart, or any ofthe methods supported by Red Hat.ImportantIf you plan to obtain Monitoring-level service, you must install your RHN Proxy Server on Red HatEnterprise Linux AS 3 Update 3 or Red Hat Enterprise Linux AS 4. These are the only supportedbase operating systems for Proxies serving Monitoring-entitled systems.Each version of Red Hat Enterprise Linux AS requires a certain package set to support RHN ProxyServer. Anything more can cause errors during installation. Therefore, Red Hat recommends ob-taining the desired package set in the following ways:For kickstarting either Red Hat Enterprise Linux AS 4, Red Hat Enterprise Linux AS 3 Update 3,or Red Hat Enterprise Linux AS 2.1 Update 5, specify the following package group: @ BaseFor installing Red Hat Enterprise Linux AS 4 or Red Hat Enterprise Linux AS 3 Update 3 via CDor ISO image, select the following package group: MinimalWarningSecurity-enhanced Linux (SELinux) must be disabled in Red Hat Enterprise Linux AS 4 prior toinstallation of RHN Proxy Server. To do this during CD or ISO image installation, select Disabledwhen presented with options for SELinux support. To do this for kickstart installation, include thecommand selinux --disabled or wait for the install to complete, edit the /etc/selinux/configfile to read SELINUX=disabled and reboot the system.For installing Red Hat Enterprise Linux AS 2.1 Update 5 via CD or ISO image, select the followingpackage group: Advanced Server• An available RHN Proxy Server entitlement within your Red Hat Network account.• An available Provisioning entitlement within your Red Hat Network account (which should comepackaged with your RHN Proxy Server entitlement).• Access to the Red Hat Network Tools channel for the installed version of Red Hat Enterprise LinuxAS.• All rhncfg* packages installed on the Proxy (from the RHN Tools channel).• Either the rhns-certs-tools package installed on the Proxy (from the RHN Tools channel) orthe secure sockets layer (SSL) CA certificate password used to generate the parent server certificate(such as on an RHN Satellite Server).