IT Services



Full List of TCP/IP Services and Servers


Contents

This page contains a directory of TCP/IP services offered by OUCS, both official and unofficial. The IP name/number of the machines that offer the service together with relevant port number are also supplied.

Please send any corrections or additions through the feedback form.


1. DNS (Domain Name System)



1.1. Caching Resolvers

Server name: resolver0.dns.ox.ac.uk resolver1.dns.ox.ac.uk resolver2.dns.ox.ac.uk
Server IP number: 129.67.1.1 129.67.1.180 163.1.2.1
Port number: 53 (TCP/UDP)
Status: Official

These resolvers should be used by all client systems across the university network. Each client should use at least two for redundancy (preferably not resolver0 and resolver1 together, as these are on the same subnet), and there is little reason not to list all three where possible.



1.2. Authoritative nameservers

Server name: auth0.dns.ox.ac.uk auth1.dns.ox.ac.uk auth2.dns.ox.ac.uk
Server IP number: 129.67.1.190 129.67.1.191 163.1.2.190
Port number: 53 (TCP/UDP)
Status: Official

If you require zone transfers to a departmental slave server, please contact hostmaster to arrange for access and for your server to receive NOTIFY messages upon updates.



2. WINS (Windows Internet Name Service)

Server name: wins1.oucs.ox.ac.uk wins2.oucs.ox.ac.uk
Server IP number: 129.67.1.52 163.1.2.52
Port number: 137-139 (UDP)
Status: Official


3. SMTP Relay (Simple Mail Transfer Protocol)

Server name: oxmail.ox.ac.uk
Server IP number: Round-robin of several IP addresses within the ranges 129.67.1.160/28 and 163.1.2.160/28
Port number: 25
Status: Official

Notes:

Mail servers which restrict incoming SMTP connections should allow the following netblocks if they wish to receive mail from Oxmail:

An alternative notation for a /28 netmask is 255.255.255.240

Clients which require an outgoing mail server to be defined should use smtp.ox.ac.uk. Mailing Lists are handled via the mail alias maillist.ox.ac.uk



4. SMTP Submission (Simple Mail Transfer Protocol)

Server name: smtp.ox.ac.uk
Server IP number: Round-robin of several IP addresses within the ranges 129.67.1.204/30 and 163.1.2.204/30
Port number: 587 (587 strongly advised but port 25 also possible)
Status: Official

Notes:

SMTP service for users mail clients. Allow the following outbound from your network to allow users to submit mail to smtp.ox.ac.uk



5. RADIUS

Server name: radius0.oucs.ox.ac.uk radius1.oucs.ox.ac.uk
Server IP number: 129.67.1.113 163.1.2.113
Port numbers: 1812/udp for authentication, 1813/udp for accounting
Status: Official

Notes:

This service is used by 802.1X Authenticators that authenticate users based on the OUCS Remote Access account. Access to these servers is restricted to those registered in the 802.1X Device Registration tool. You must configure both authentication and accounting to both OUCS RADIUS servers.



6. HTTP (Hyper Text Transfer Protocol) Proxy Cache

Server name: wwwcache.ox.ac.uk
Port number: 80 (http)
Status: Official


7. NTP (Network Time Protocol)

Server name: ntp0.ox.ac.uk ntp1.ox.ac.uk ntp2.ox.ac.uk ntp3.ox.ac.uk
IP address: 129.67.1.160 129.67.1.164 163.1.2.160 163.1.2.164
Access: all IPv4 hosts
Port number: 123
Status: Official


8. DHCP (Dynamic Host Configuration Protocol)

Server name: dhcp-b.ox.ac.uk dhcp-c.ox.ac.uk
Server IP number: 163.1.2.2 129.67.1.2
Port number: 67
Status: Official


9. OWL/eduroam DHCP server address

Server name: lin-services.backbone.ox.ac.uk
Server IP number: 192.76.34.141
Port number: 67
Status: Official


10. LDAP (Lightweight Directory Access Protocol)

Server name: ldap.ox.ac.uk
Port number: 389
Status: Experimental - not available for general use


11. NNTP (Network News Transport Protocol, "Usenet")

Server name: news.ox.ac.uk
Port number: 119
Status: Official


12. Electronic Mail

Server name: nexus.ox.ac.uk
Port number: 80/81 (http), 443 (secure-http)
Status: Official


13. User WWW Server

Server name: users.ox.ac.uk
Port: Accessed by FTP transfer
Status: Official


14. TSM Backup Server

Server name: hfs.ox.ac.uk
Ports: Accessed via dedicated client software
Status: Official


15. Software Mirrors

Server name: mirror.ox.ac.uk (Linux & Linux-related software)
Ports: 20/21 (ftp), 80 (http), NFS (mirror.ox.ac.uk:/public)
Status: Unofficial