56.10.05 - Network Access

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To define network access.


Policy will be reviewed once a year by the director of Systems and Network Operations and will be approved by the chief information officer (CIO) every odd-numbered year.


Local Area Networks

Supported LANs are those designed, installed, and operated by the Enterprise Network team. Devices such as computers, zero clients, phones, printers, scanners, storage devices, and videoconferencing systems may be connected to a network outlet within a supported LAN with the approval of the director of Systems and Network Operations.

The following may not be connected to an outlet within the TTUHSC El Paso network without prior written authorization of the director of Systems and Network Operations or his/her designee:

  • Proxy servers and firewalls
  • Systems or devices providing virtual private networking (VPN) capability to the internet
  • Wireless devices or hot spots
  • Network devices
  • Systems or devices containing a network adapter operating in promiscuous mode where a node on a network accepts all packets, regardless of their destination address
  • Systems performing network address translation (NAT)
  • Systems operating a domain naming system (DNS), Windows internet naming system (WINS), or dynamic host configuration protocol (DHCP) services
  • Windows domain controllers


All TTUHSC El Paso-owned PCs and servers attached to the TTUHSC El Paso network must be members of the TTUHSC domain and defined in the appropriate active directory organization unit (OU)

Remote Access Policies and Procedures 

Remote access to the TTUHSC El Paso network provides users with the convenience of accessing the internet, their office computer, or information on network file shares to which they have access. Along with this convenience comes the need for appropriate security controls to ensure that data transmitted is secure. Additionally, the network must be protected from illicit use to ensure that viruses, malware, and other malicious code are not allowed to propagate across the network.


This policy applies to all remote devices connected to the TTUHSC El Paso network infrastructure through network access.


State and federal legislation requires TTUHSC El Paso to provide protection of sensitive data such as patient information and student financial data. Therefore, TTUHSC El Paso personnel must use a secure mechanism for accessing the TTUHSC El Paso network infrastructure remotely. Additional information on remote access can be found under the IT access control policy at www.elpaso.ttuhsc.edu/it/policies.

All users who connect remotely to the TTUHSC El Paso network must have an up-to-date anti-virus software installed on all devices. This anti-virus software must be updated regularly with new anti-virus signatures. TTUHSC El Paso provides free McAfee Virus Scan licenses for home use by faculty, staff, and students. This software can be downloaded at http://elpaso.ttuhsc.edu/it/IT-store/software.aspx.


Any user accessing the TTUHSC El Paso network through an internet connection (satellite or cable) must connect using a virtual private network (VPN) connection.

Client Connection Setup

VPN services from connections outside the TTUHSC El Paso network are supported for eRaider accounts, providing services are in compliance with the internet service provider (ISP)'s policies.


All institutional security policies are applicable to remote access users. Security controls in place include appropriate authentication and intrusion prevention services (IPS). Monitoring and auditing will be conducted for remote access connections. In the event of unusual, disruptive, or suspicious network activity, Information Technology will disable the VPN account, based on recommendations from the TTUHSC El Paso IT Security team.

TTUHSC El Paso Software Requirements

All systems connected to the TTUHSC El Paso network must have approved anti-virus software installed and operational before the system may be connected to the network. This software must be configured to receive regular virus signature updates from the anti-virus servers administered by the TTUHSC El Paso information security officer and his/her staff.