Quarantine Network

This page is has been moved to the new SoC Document Repository. The new URL for this page is: https://docs.comp.nus.edu.sg/node/1733

SoC network team has established a special Quarantine Network for the purpose of allowing users to download required files from the Internet to rectify virus infections and security vulnerability on their computers.

Location of the Quarantine Network

There is currently only one specific network point patched into the Quarantine Network. This is located in the corridor of S15 Level 1, at the first network point at the benches next to the printers. The network point number is S15-1-76 and it is labelled "Quarantine Network".

In future, the Quarantine Network will be made more easily available at other locations.

Network Restrictions

The Quarantine Network restricts outgoing Internet access of the computers inside the network. Outgoing Internet access is permitted only to a few selected resources so that users can download any required files to rectify the virus infection. All other outgoing Internet access and all incoming Internet access are blocked, so that these computers will not be subject to further attacks and will not be able to attack or infect computers outside the Quarantine Network.

The following websites are currently permitted:

1. Microsoft Windowsupdate
2. Trend Micro
3. NUS Mirror
4. NOC

Conditions for Computer to be Quarantined

A computer will be placed in the Quarantine Network if it meets any of the following conditions:

1. Massive Portscanning - detected by IDS
2. Critical Vulnerability - detected by Nessus

To get out of Quarantine Network

A computer will be removed from the Quarantine Network only when it passes the Nessus security scan.

To get the nessus scanner to scan your computer, please submit a system enable request and let it stays online for the next half an hour.