SSC works actively to maintain the security of information and devices connected to our network, while providing faculty, staff and students with the resources and support they need to stay secure on the Internet.

Antivirus Software for UCLA Community

UCLA has negotiated an agreement with Sophos to license Sophos Antivirus products for UCLA staff, students, and faculty. Sophos Antivirus protects your computers from the latest viruses from email, CD, floppy disk, network shares, instant messaging, web download etc. Using patented InterCheck technology, Sophos’s “on-access” scanner provides constant real-time protection with minimal system overhead.

Download Sophos Antivirus

You can find more information, support and the download for Sophos Antivirus at

What is a firewall?

A firewall is a security device that is designed to protect a local area network from unauthorized intrusions. The firewall analyzes traffic and applies rules between the local network and external network. There rules are based on IP addresses and ports. In order for a computer to connect to the internet, it must have a unique IP address that is different from other network devices. A computer provides services on the Internet by using port numbers. For example, port 80 corresponds to “http” service. Port numbers range from 0 to 65536, but only ports 0 to 1024 are already defined as well-known ports.

Why is a firewall necessary?

A firewall prevents harmful and unsolicited incoming traffic from accessing computers or other networked devices. The intention is to keep hackers from gaining unauthorized access to a machine.

How does a firewall protect a machine?

Hackers usually exploit vulnerabilities of existing well-known ports. The firewall protects machines inside its perimeter by blocking these ports from the outside network.

Three Security Zone Types Available from SSC:

Secure Zone

All incoming traffic to your computer will be blocked. However, computers behind the firewall can initiate access to outside servers.

Semi-Secure Zone

Some incoming traffic to your computer will be blocked. Currently, the following well-known port numbers will be open: Port 22 (SSH), Port 25 (smtp), Port 80 (http), Port 143 (imap), Port103 (pop), Port 443 (https), Port 3389 (terminal service).

Unprotected Zone

This zone is your current zone with no firewall protection.