OIT Network Registration Information

student computing

Summary: Registering your computer or server for use on the UCI network involves getting an IP address and a DNS domain name using the form(s) provided here.  Before submitting a registration form, please familiarize yourself with the following information, if you have not already done so.

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About Computer Use on the UCI Network

All computer systems connected to the UCI network must be registered with the campus Domain Name Service that is managed by OIT. There are several ways your computer can be registered for use on the UCI network. If you are using wireless networking, e.g. on a laptop or mobile device, you only need to register it through UCInet Mobile Access before you can join the network. When first connecting a new device to the Wireless network, Select “UCInet Mobile Acesss” as the Wifi network to join, open a web browser and navigate to any web page. You will be re-directed to the UCInet Mobile Access Express Registration system where you can register your new device.

If you are connecting a new computer system to the wired UCI network (that does not use DHCP, see below), you must obtain a registered IP address and domain name that distinctly identifies your computer on the network.  Registration is typically handled by your Departmental Computing Support Coordinator , or OIT Desktop Support team. Some wired networks use the Dynamic Host Configuration Protocol (DHCP) to automatically assign an IP address and domain name. If your computer uses DHCP, you do not need to register an IP address/domain name with OIT.

About IP Addresses

Every computer that communicates on the Internet must be assigned an IP address that distinctly identifies the computer. An IP address consists of 32 bits, more commonly displayed as 4 groups of decimal numbers, called octets, for example: 128.200.222.100. All computers at UCI that will be communicating on the UCI network and/or the Internet must be assigned an IP address. Two computers can not share the same IP address. To determine what IP address your computer is currently assigned, visit the What is my IP Address? utility.

“Domain Names” (also referred to as “Fully Qualified Domain Names” or FQDNs) link a friendly, human readable name to an IP address. For example, a domain name of “www.oit.uci.edu” may identify a computer that has been assigned the IP address 128.200.67.107. We use “subdomain” naming to identify a department or area in domain names. Using the non-existent host name “quizzes.mathematics.uci.edu” as an example, the components designate the hostname (quizzes), the subdomain or department (mathematics), our campus domain (uci), and indicate that we are an educational institution (edu).

UCI has been allocated several network address blocks. The campus data network is divided into many different “sub-networks” or “subnets”. If you are requesting a new IP address, it is important that you know what network you are on. A example network designation would be “128.200.94.192/26” or “128.200.52.0/24”. You will need to indicate the network your computer is using when you submit your registration request.

Requesting an IP Address and Domain Name

  1. Use the OIT IP Address Application Form to request an new host IP address/domain name registration.
    • Your Name, UCInetID, Email address, Phone, and Department will be pre-entered into the request form. Information that is pre-entered may be corrected as necessary.
  2. To make changes to an existing registration, you may either submit another request form and include your changes in the comments section, or send email to the OIT Help Desk: oit at uci.edu.

About Servers

Systems that require connections initiated from off-campus are considered to be servers. This would include systems that host web sites, ftp servers, mail servers, and other server applications. Every computer that communicates on the Internet could possibly function as a server. All servers at UCI that will be accepting connections initiated from off-campus must be registered as a server. If your computer is not registered as a server, connections from outside the UCI network will be blocked.

Registering your Computer as a Server

Using Server Registration to open ports on your computer enables access to those ports from anywhere in the world. It is very important that your computer be securely configured and managed if you are going to enable off-campus access to it. If you want to ensure that no access is granted to your computer from off-campus, you should use the Server Registration form and select the “This system does not need to be contacted from off campus. (No ports open.)” option. It is a good idea to register your computer, regardless of whether or not it needs to be accessed from off-campus.

  1. The server registration system is a series of forms that collect information about your computer, what ports you would like to have open through the campus border firewall, or that you would like NO ports open, and who is responsible for your computer (e.g. your computing support coordinator, or departmental support staff).
  2. If you do not understand the implications of allowing off-campus access to specific ports on your computer, you should not open any ports. Please consult your Computing Support Coordinator or the OIT Help Desk if you have any questions.