User manual NOVELL LINUX ENTERPRISE SERVER 11 ADMINISTRATION

[. . . ] SUSE Linux Enterprise Server 11 March 23, 2009 www. novell. com Administration Guide Administration Guide All content is copyright © 2006- 2009 Novell, Inc. Legal Notice This manual is protected under Novell intellectual property rights. By reproducing, duplicating or distributing this manual you explicitly agree to conform to the terms and conditions of this license agreement. This manual may be freely reproduced, duplicated and distributed either as such or as part of a bundled package in electronic and/or printed format, provided however that the following conditions are fulfilled: That this copyright notice and the names of authors and contributors appear clearly and distinctively on all reproduced, duplicated and distributed copies. [. . . ] Also, some DHCP servers require the Hostname to Send option field to contain a specific string in the DHCP messages from clients. Leave AUTO to send the current hostname (that is the one defined in /etc/HOSTNAME). If yo do not want to change the default route according to the information from DHCP, uncheck Change Default Route via DHCP. Changing the Configuration of a Network Card To change the configuration of a network card, select a card from the list of the detected cards in Network Settings > Overview in YaST and click Edit. The Network Card Setup dialog appears in which to adjust the card configuration using the General, Address and Hardware tabs. For information about wireless card configuration, see Section 18. 1. 2, "Configuration with YaST" (page 263). Configuring IP Addresses You can set the IP address of the network card or the way its IP address is determined in the Address tab of the Network Card Setup dialog. The network card can have No IP Address (which is useful for bonding devices), a Statically Assigned IP Address (IPv4 or IPv6) or a Dynamic Address assigned via DHCP and/or Zeroconf. If using Dynamic Address, select whether to use DHCP Version 4 Only (for IPv4), DHCP Version 6 Only (for IPv6) or DHCP Both Version 4 and 6. Basic Networking 219 If possible, the first network card with link that is available during the installation is automatically configured to use automatic address setup via DHCP. On SUSE Linux Enterprise Desktop, where NetworkManager is active by default, all network cards are configured. NOTE: IBM System z and DHCP On IBM System z platforms, DHCP-based address configuration is only supported with network cards that have a MAC address. DHCP should also be used if you are using a DSL line but with no static IP assigned by the ISP (Internet Service Provider). If you decide to use DHCP, configure the details in DHCP Client Options in the Global Options tab of the Network Settings dialog of the YaST network card configuration module. Specify whether the DHCP client should ask the server to always broadcast its responses in Request Broadcast Response. This option may be needed if your machine is a mobile client moving between networks. If you have a virtual host setup where different hosts communicate through the same interface, an DHCP Client Identifier is necessary to distinguish them. DHCP is a good choice for client configuration but it is not ideal for server configuration. To set a static IP address, proceed as follows: 1 Select a card from the list of detected cards in the Overview tab of the YaST network card configuration module and click Edit. If the IPv6 address is used, use Subnet Mask for prefix length in format /64. Optionally, you can enter a fully qualified Hostname for this address, which will be written to the /etc/hosts configuration file. 5 To activate the configuration, click OK. 220 Administration Guide If you use the static address, the name servers and default gateway are not configured automatically. To configure name servers, proceed as described in Section "Configuring Hostname and DNS" (page 225). To configure a gateway, proceed as described in Section "Configuring Routing" (page 227). Configuring Aliases One network device can have multiple IP addresses, called aliases. To set an alias for your network card, proceed as follows: 1 Select a card from the list of detected cards in the Overview tab of the YaST network card configuration module and click Edit. [. . . ] If a message like this appears: Checking for service httpd: OK Server uptime: 1 day 18 hours 29 minutes 39 seconds Apache is running on the machine. Otherwise, enter rcapache start to start Apache with the SUSE Linux Enterprise Server default settings. The last step to set it up is to copy the file cachemgr. cgi to the Apache directory cgi-bin. For 32-bit, this works as follows: cp /usr/lib/squid/cachemgr. cgi /srv/www/cgi-bin/ In a 64-bit environment, the file cachemgr. cgi is located below /usr/lib64/ squid/ and the command to copy it to the Apache directory is the following: cp /usr/lib64/squid/cachemgr. cgi /srv/www/cgi-bin/ 29. 6. 2 Cache Manager ACLs in /etc/squid/squid. conf There are some default settings in the original file required for the cache manager. [. . . ]